Ford Explorer: Automatic Transmission - 10-Speed Automatic Transmission – 10R60 / Diagnosis and Testing - DTC Chart and Pinpoint Tests - 2.3L EcoBoost (201kW/273PS)

Normal Operation and Fault Conditions

Power is routed through the transmission solenoid power control (inside the PCM) to all transmission solenoids. If the power circuit to the transmission solenoids or the transmission solenoid power control fails open, all solenoids are failed electrically off. Check for an open, short to ground or the transmission connector disconnected. The transmission solenoid power control disables power to the transmission solenoids when certain transmission DTCs are set.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• Circuit open or shorted
• Transmission internal wiring harness
• Shift solenoid
• PCM

NOTE: This pinpoint test is written to address all shift solenoid electrical faults. For each test step, only the circuits related to the DTC retrieved during the KOEO test need to be tested.

• Ignition OFF.

• Disconnect Transmission vehicle harness C168A .

• Disconnect: PCM C1381E

• Inspect the connectors for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-92		C168A-9

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-92		Ground

• Measure the resistance of the solenoid control circuits using the following chart:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  SSA C1381E-75		C168A-14
  SSB C1381E-74		C168A-15
  SSC C1381E-72		C168A-16
  SSD C1381E-67		C168A-21
  SSE C1381E-65		C168A-22
  SSF C1381E-64		C168A-23

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  SSA C1381E-75		Ground
  SSB C1381E-74		Ground
  SSC C1381E-72		Ground
  SSD C1381E-67		Ground
  SSE C1381E-65		Ground
  SSF C1381E-64		Ground

• Ignition ON.

• Measure the voltage present on the suspect solenoid control circuit using the following chart:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  SSA C1381E-75		Ground
  SSB C1381E-74		Ground
  SSC C1381E-72		Ground
  SSD C1381E-67		Ground
  SSE C1381E-65		Ground
  SSF C1381E-64		Ground

• Ignition OFF.

• Connect Transmission Vehicle Harness C168A .

• Remove the transmission fluid pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect All shift solenoid connectors..

• Measure, using the table below:

  Positive Lead	Measurement / Action	Negative Lead
  SSA C1381E-75		SSA C1843-2
  SSB C1381E-74		SSB C1844-2
  SSC C1381E-72		SSC C1845-2
  SSD C1381E-67		SSD C1846-2
  SSE C1381E-65		SSE C1847-2
  SSF C1381E-64		SSF C1848-2

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  SSA C1381E-75		Ground
  SSB C1381E-74		Ground
  SSC C1381E-72		Ground
  SSD C1381E-67		Ground
  SSE C1381E-65		Ground
  SSF C1381E-64		Ground

• Measure resistance of the suspect solenoid power circuit using the table below:

  Positive Lead	Measurement / Action	Negative Lead
  SSA C1381E-92		C1843-1
  SSB C1381E-92		C1844-1
  SSC C1381E-92		C1845-1
  SSD C1381E-92		C1846-1
  SSE C1381E-92		C1847-1
  SSF C1381E-92		C1848-1

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-92		Ground

Normal Operation and Fault Conditions

The TFT sensor is a temperature dependent resistor that is in contact with transmission fluid in the transmission sump area. The PCM monitors the voltage drop across the TFT sensor, which changes as transmission fluid temperature varies. The PCM uses the TFT sensor signal as an input for its strategy for shifting and TCC operation. The PCM also uses the TFT sensor signal for transmission fault detection and diagnostics.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• Circuit open or shorted
• TFT sensor
• Transmission internal wiring harness
• PCM

• Ignition OFF.

• Disconnect Transmission Vehicle Harness C168A .

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Connect the diagnostic tool.

• Ignition ON.

• Access the  PCM  and monitor the  TFT (Deg C)  PID

• Access the  PCM  and monitor the  TFT_V (V)  PID

• Connect a fused jumper to the transmission vehicle harness:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-13		C168A-20

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-13		Ground

• Ignition OFF.

• Disconnect PCM C1381B .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-13		C1381B-93

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-13		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-13		Ground

No

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Ignition OFF.

• Disconnect PCM C1381E .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-20		C1381E-62

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-20		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-20		Ground

No

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Ignition OFF.

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  Transmission component side, pin 13		Transmission component side, pin 20

• Compare the measured resistance to the current temperature of the transmission fluid using the following chart.

  °C	°F	Resistance (ohms)
  -50 to -40	-58 to -40	41k-97k
  -39 to -20	-39 to -4	14k-52k
  -19 to -1	-3 to 31	5.5k-17k
  0 to 20	32 to 68	2.3k-6.4k
  21 to 40	69 to 104	1.1k-2.7k
  41 to 70	105 to 158	0.4k-1.3k
  71 to 90	159-194	236-445
  91 to 110	195-230	140-247
  111 to 130	231-266	87-145
  131 to 150	267-302	55-90

• Remove the main control valve body.
  REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect TFT sensor C1842 .

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  TFT sensor component side pin 1		TFT sensor component side pin 2

• Compare the measured resistance to the current temperature of the TFT sensor using the following chart.

  °C	°F	Resistance (ohms)
  -50 to -40	-58 to -40	41k-97k
  -39 to -20	-39 to -4	14k-52k
  -19 to -1	-3 to 31	5.5k-17k
  0 to 20	32 to 68	2.3k-6.4k
  21 to 40	69 to 104	1.1k-2.7k
  41 to 70	105 to 158	0.4k-1.3k
  71 to 90	159-194	236-445
  91 to 110	195-230	140-247
  111 to 130	231-266	87-145
  131 to 150	267-302	55-90

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  Transmission component side, pin 13		Ground
  Transmission component side, pin 20		Ground

• Remove the main control valve body.
  REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect TFT sensor C1842 .

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  TFT sensor component side pin 1		Ground
  TFT sensor component side pin 2		Ground

• Disconnect PCM C1381B .

• Disconnect PCM C1381E .

• Connect Transmission vehicle harness C168A .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381B-93		C1381E-62

• Compare the measured resistance to the current temperature of the transmission fluid using the following chart.

  °C	°F	Resistance (ohms)
  -50 to -40	-58 to -40	41k-97k
  -39 to -20	-39 to -4	14k-52k
  -19 to -1	-3 to 31	5.5k-17k
  0 to 20	32 to 68	2.3k-6.4k
  21 to 40	69 to 104	1.1k-2.7k
  41 to 70	105 to 158	0.4k-1.3k
  71 to 90	159-194	236-445
  91 to 110	195-230	140-247
  111 to 130	231-266	87-145
  131 to 150	267-302	55-90

Yes

CONNECT all electrical connectors. CLEAR the DTC. CARRY OUT the KOEO and KOER self-tests. If the DTC returns,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures). If the DTC does not return, the fault is no longer present and might have been caused by a terminal fitment issue.

Normal Operation and Fault Conditions

The TR sensor is comprised of a dual set of TR sensors. On Shift by Wire vehicles, the park system position is detected by reading TR sensors A and B. The PCM shifts the vehicle in and out of park and provides forward or reverse based on the position of the GSM shift knob. The 10R60 transmission uses dual PWM output (at 125 Hz) TR sensors where: TR sensor A increases as the park system is moved from Park to Out of Park and TR sensor B decreases as the park system is moved from Park to Out of Park, together the sum of the two signals should add up to 100%.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• Circuit open or shorted
• TR sensor
• Transmission main control harness
• PCM

NOTE: Read and record all DTCs.

• Ignition OFF.

• Select PARK.

• Connect the diagnostic tool.

• Carry out the KOEO then the KOER test.

• Ignition ON.

• Enter the following diagnostic mode on the scan tool: TR PID: TR_A_DC and TR_B_DC.

• Move the shift knob into each range and stop.

• Observe the PIDs TR_A_DC and TR_B_DC while wiggling the harness or driving the vehicle.

• Compare the duty cycles shown by the PIDs TR_A_DC and TR_B_DC to the park system position duty cycle, using the following chart.
  

    Typical TR Sensor(s) PWM Output

  
  

  	Transmission Range Sensor A		Transmission Range Sensor B
  Park System Position	Min	Max	Min	Max
  Park	13.00	17.00	83.00	87.00
  Out of Park	61.26	65.26	34.74	38.74
  Park Manual Override	77.93	81.93	18.07	22.07

• Ignition OFF.

• Disconnect: Transmission Vehicle Harness C168A.

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-5		Ground
  C168A-6		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-8		Ground

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-8		C1381E-71
  C168A-5		C1381E-29
  C168A-6		C1381E-80

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-8		Ground
  C168A-5		Ground
  C168A-6		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-5		Ground
  C168A-6		Ground
  C168A-8		Ground

No

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-20		C1381E-62

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-20		Ground

• Ignition OFF.

• Remove the transmission fluid pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Connect Transmission Vehicle Harness C168A .

• Connect PCM C1381E .

• Disconnect TR sensor C167 .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C167-2		Ground
  C167-3		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C167-4		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C167-4		C167-1

Normal Operation and Fault Conditions

TSS Sensor

The TSS sensor is a Hall-effect type sensor that provides a signal to the PCM that changes in frequency as the rotating speed of the planetary carrier No. 2 varies. The PCM compares the TSS sensor signal with the engine speed information to determine the amount of slip occurring in the torque converter. The PCM also compares the TSS sensor signal with the OSS sensor signal to determine the gear ratio provided by the planetary carrier No. 4. The PCM uses the TSS sensor signal as an input for its shift strategies and TCC operation. The PCM also uses the TSS sensor signal for transmission fault detection and diagnostics.

OSS Sensor

The OSS sensor is a Hall-effect type sensor that provides a signal to the PCM that changes in frequency as the rotating speed of the rear planetary carrier No. 4 varies. The PCM also compares the OSS sensor signal with the TSS sensor signal to determine the gear ratio provided by the rear planetary gearset. The PCM uses the OSS sensor signal as an input for its shift strategies and TCC operation. The PCM also uses the OSS sensor signal for transmission fault detection and diagnostics.

Intermediate Speed Sensors A and B

The intermediate speed sensors A (ISSA) and B (ISSB) are Hall-effect type sensors that provide a signal to the PCM that changes in frequency as the rotating speed of the component being monitored changes. ISSA monitors the speed and rotational direction of ring gear 1 and ISSB monitors the speed and rotational direction of planetary carrier-1/ring gear 4. The intermediate speed sensors are used to monitor clutch states for transmission fault detection and diagnostics.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, corrosion, loose wires or ground and missing or damaged seals
• Circuit open or shorted
• Transmission internal wiring harness
• TSS sensor
• OSS sensor
• Intermediate Speed Sensor A (ISSA)
• Intermediate Speed Sensor B (ISSB)
• PCM

NOTE: This pinpoint test is written to address all speed sensor electrical faults. For each test step, only the circuits related to the DTC retrieved during the KOEO test need to be tested.

• Ignition OFF.

• Disconnect: Transmission Vehicle Harness C168A

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Ignition ON.

• For OSS sensor and ISSA, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-7		Ground

• for TSS sensor and ISSB, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-8		Ground

• Disconnect: PCM C1381E

• Ignition OFF.

• For OSS sensor and ISSA measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-7		Ground

• For TSS sensor and ISSB, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-8		Ground

• For OSS sensor and the ISSA measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-7		C1381E-70

• For TSS sensor and the ISSB measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-8		C1381E-71

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Ignition OFF.

• Disconnect: PCM C1381E

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Ignition OFF.

• For the OSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-4		C1381E-68

• For the TSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-1		C1381E-90

• For the ISSA, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-2		C1381E-61

• For the ISSB, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-3		C1381E-24

• Ignition OFF.

• For the OSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-68		Ground

• For the TSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-90		Ground

• For the ISSA, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-61		Ground

• For the ISSB, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-24		Ground

• Ignition ON.

• For the OSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-68		Ground

• For the TSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-90		Ground

• For the ISSA sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-61		Ground

• For the ISSB sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-24		Ground

• Ignition OFF.

• Remove the transmission pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect for OSS sensor C1107 .

• Remove the main control to access the connectors.
  REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect for TSS sensor C3106 .

• Disconnect for ISSA C1836 .

• Disconnect for ISSB C1837 .

• For the OSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1107-1		Ground

• For the TSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C3106-1		Ground

• For the ISSA, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1836-1		Ground

• For the ISSB, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1837-1		Ground

• Connect Transmission Vehicle Harness C168A .

• For the OSS sensor, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1107-1		C1381E-68

• For the TSS sensor, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C3106-1		C1381E-90

• For the ISSA, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1836-1		C1381E-61

• For the ISSB, measure
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1837-1		C1381E-24

• Connect PCM C1381E .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1107-2		Ground
  C1836-2		Ground
  C1837-2		Ground
  C3106-2		Ground

Normal Operation and Fault Conditions

The transmission fluid auxiliary pump keeps the transmission engaged when the engine is stopped and the transmission is in drive. The transmission fluid auxiliary pump has an internal microprocessor and communicates with the PCM over a PWM circuit with a frequency of 150 Hz and a duty cycle range of 10% to 90%.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, corrosion, loose wires or ground and missing or damaged seals
• BJB fuse 26 (15A)
• Circuit open or shorted
• Transmission internal wiring harness
• Transmission fluid auxiliary pump
• PCM

• CHECK the transmission fluid level.
  REFER to: Transmission Fluid Level Check (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).
  

• Ignition OFF.

• Disconnect Transmission Vehicle Harness C168A .

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-10		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-12		Ground

• Ignition OFF.

• Disconnect PCM C1381E .

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-12		C1381E-95

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-12		Ground

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-17		Ground

• Ignition OFF.

• Disconnect PCM C1381B .

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Measure:
  Click to display connectors

    ATFPC

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-18		C1381B-41

  
  Click to display connectors

    ATFPM

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-19		C1381B-50

• Measure:
  Click to display connectors

    ATFPC

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-18		Ground

  
  Click to display connectors

    ATFPM

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-19		Ground

• Ignition ON.

• Measure:
  Click to display connectors

    ATFPC

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-18		Ground

  
  Click to display connectors

    ATFPM

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-19		Ground

• Ignition OFF.

• Remove the transmission fluid pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect Transmission Fluid Auxiliary Pump C1792 .

• Inspect the connector for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Measure:
  

    ATFPC

  
  

  Positive Lead	Measurement / Action	Negative Lead
  Transmission component side, pin 18		C1792-4

  
  

    ATFPM

  
  

  Positive Lead	Measurement / Action	Negative Lead
  Transmission component side, pin 19		C1792-5

• Measure:
  Click to display connectors

    ATFPC

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1792-4		Ground

  
  Click to display connectors

    ATFPM

  
  

  Positive Lead	Measurement / Action	Negative Lead
  C1792-5		Ground

• Ignition OFF.

• Connect Transmission Vehicle Harness C168A .

• Connect PCM C1381E .

• Connect BJB fuse 26 (15A) (if previously disconnected).

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1792-1		Ground
  C1792-3		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1792-1		C1792-6

Normal Operation and Fault Conditions

The transmission fluid auxiliary pump keeps the transmission fluid circulating during auto start-stop events. The transmission fluid auxiliary pump has an internal microprocessor and communicates with the PCM over a PWM circuit with a frequency of 150 Hz with a duty cycle range of 10% to 90%. If the transmission fluid level is low or overfilled or there are any restrictions in the transmission lines, hoses (if vehicle is equipped with external lines or hoses) or cooler it may affect the transmission fluid auxiliary pump operation.

DTC Fault Trigger Conditions

Possible Sources

• Electric transmission fluid pump
• Transmission fluid auxiliary pump seals
• Transmission fluid auxiliary pump

• CHECK the transmission fluid level.
  REFER to: Transmission Fluid Level Check (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).
  

• Ignition ON.

• Using the diagnostic scan tool, retrieve all DTCs from the PCM.

• Ignition ON.

• Using the diagnostic scan tool, CLEAR all DTCs.

• Road test the vehicle, making sure the auto start-stop function operates.

• Perform the PCM self-test.

• Using the diagnostic scan tool, CLEAR all DTCs.

• Road test the vehicle, making sure the auto start-stop function operates.

• Perform the PCM self-test.

• Remove the transmission fluid pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Remove the transmission fluid auxiliary pump tube and inspect the seals.

• Ignition ON.

• Using the diagnostic scan tool, retrieve all CMDTCs.

• Allow the transmission to cool.

• Ignition ON.

• Using the diagnostic scan tool, CLEAR all DTCs.

• Road test the vehicle, making sure the transmission reaches operating temperature and the auto start-stop function operates.

• Perform the PCM self-test.

Normal Operation and Fault Conditions

When the electrical connector or solenoid is disconnected, inspect the connector for terminal condition, corrosion and contamination and the connector seal for damage. Clean, repair or install new components as required. If the power circuit to the transmission solenoids fails open, then all solenoids are failed electrically off. Check for an open, short to ground or the transmission connector disconnected. The TCC is controlled by a directly proportional solenoid. Like the shift solenoids the TCC solenoid is controlled by a smart driver capable of detecting open, short to ground and short to power faults. In the event of an open circuit or short to power fault the TCC circuit is failed open. The TCC and LPC solenoids share a high side driver. Anytime power is removed the transmission defaults to MAX line pressure with open TCC. LPC is controlled by an inversely proportional solenoid (0 current = max pressure, max current = min line pressure). The LPC solenoid is controlled by a “smart driver” capable of detecting an open, short to ground or short to power faults.

DTC Fault Trigger Conditions

Possible Sources

• Circuit open or shorted
• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• TCC or LPC solenoid
• Transmission internal wiring harness
• PCM

• Ignition OFF.

• Disconnect Transmission vehicle harness C168A .

• Disconnect PCM C1381E .

• Inspect the connectors for damaged or pushed out terminals, corrosion, loose wires and missing or damaged seals.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-91		C168A-11

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-91		Ground

• Measure the resistance of the suspect solenoid control circuit using the following chart:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  LPC Solenoid C1381E-73		C168A-24
  TCC Solenoid C1381E-66		C168A-25

• Measure the resistance of the suspect solenoid control circuit to ground using the following chart:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  LPC Solenoid C1381E-73		Ground
  TCC Solenoid C1381E-66		Ground

• Ignition ON.

• Measure the voltage present on the suspect solenoid control circuit using the following chart:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  LPC Solenoid C1381E-73		Ground
  TCC Solenoid C1381E-66		Ground

• Ignition OFF.

• Drain the transmission fluid and remove the transmission fluid pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect LPC C1840 .

• Disconnect TCC C1841 .

• Connect Transmission Vehicle Harness C168A .

• For the LPC solenoid, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-73		Ground
  C1381E-91		Ground

• For the TCC solenoid, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-66		Ground
  C1381E-91		Ground

• For the LPC solenoid, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-73		C1840-2
  C1381E-91		C1840-1

• For the TCC solenoid, measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C1381E-66		C1841-2
  C1381E-91		C1841-1

Normal Operation and Fault Conditions

TSS Sensor

The TSS sensor is a Hall-effect type sensor that provides a signal to the PCM that changes in frequency as the rotating speed of the planetary carrier No. 2 varies. The PCM compares the TSS sensor signal with the engine speed information to determine the amount of slip occurring in the torque converter. The PCM also compares the TSS sensor signal with the OSS sensor signal to determine the gear ratio provided by the planetary carrier No. 4. The PCM uses the TSS sensor signal as an input for its shift strategies and TCC operation. The PCM also uses the TSS sensor signal for transmission fault detection and diagnostics.

OSS Sensor

The OSS sensor is a Hall-effect type sensor that provides a signal to the PCM that changes in frequency as the rotating speed of the rear planetary carrier No. 4 varies. The PCM also compares the OSS sensor signal with the TSS sensor signal to determine the gear ratio provided by the rear planetary gearset. The PCM uses the OSS sensor signal as an input for its shift strategies and TCC operation. The PCM also uses the OSS sensor signal for transmission fault detection and diagnostics.

Intermediate Speed Sensors A and B

The intermediate speed sensors A (ISSA) and B (ISSB) are hall-effect type sensors that provide a signal to the PCM that changes in frequency as the rotating speed of the component being monitored changes. ISSA monitors the speed and rotational direction of ring gear 1 and ISSB monitors the speed and rotational direction of planetary carrier-1/ring gear 4. The intermediate speed sensors are used to monitor clutch states for transmission fault detection and diagnostics.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• TSS sensor
• OSS sensor
• ISSA
• ISSB

• Using a diagnostic scan tool, perform the PCM self-test.

• If any other speed sensor DTCs are present resolve them first.

• If any other TSS sensor DTCs are present resolve them first. If DTC P0716 is present alone, inspect the TSS electrical connections for loose connections. Confirm the TSS sensor is not loose. Inspect the TSS tone wheel (part of planetary carrier No. 2 ) for damage.

• If any other OSS sensor DTCs are present resolve them first. If DTC P0721 is present alone, Inspect the OSS electrical connections for loose connections. Visually check the air gap and confirm the OSS sensor is not loose. Inspect the OSS tone wheel (part of planetary carrier No. 4 ) for damage.

• If any other ISSA DTCs are present resolve them first. If DTC P0792 is present alone, Inspect the ISSA electrical connections for loose connections. Visually check the air gap and confirm the ISSA is not loose. Inspect ISSA trigger wheel (part of the No. 1 ring gear) for damage.

• If any other ISSB DTCs are present resolve them first. If DTC P2746 is present alone, Inspect the ISSB electrical connections for loose connections. Visually check the air gap and confirm the ISSB is not loose. Inspect the OSS trigger wheel (part of the clutch and planetary container cylinder) for damage.

Normal Operation and Fault Conditions

The park lock pawl solenoid locks the park lock pawl valve when energized, either in the park position or the out of park position. When the engine is running, line pressure attempts to move the park lock pawl valve, but is unable to do so until the park lock pawl solenoid is released. The park lock pawl solenoid pin is normally extended, but when it is not energized, the park lock pawl valve is able to push the solenoid pin in, allowing the system to move into or out of park. When the solenoid is energized, the pin locks in the extended position. The park lock pawl solenoid is used to keep the vehicle out of park during stay in neutral mode and during start stop events.

DTC Fault Trigger Conditions

Possible Sources

• Park is manually released
• Low line pressure
• Circuit open or shorted
• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• Transmission internal wiring harness
• Park lock pawl solenoid
• PCM

• Using a diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs) from the PCM.

• KOEO

• Access the  PCM  and monitor the  TR_PARK_STAT  PID

NOTE: The shift-by-wire variant of the 10R transmission uses hydraulic pressure to move the park lock pawl valve out of park.

• Carry out the line pressure test.
  REFER to: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
  

• Ignition OFF.

• Disconnect Transmission vehicle harness C168A .

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-12		Ground

• Ignition OFF.

• Disconnect PCM C1381E .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-12		C1381E-95

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-12		Ground

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Ignition OFF.

• Disconnect PCM C1381E .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-26		C1381E-87

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-26		Ground

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C168A-26		Ground

• Ignition OFF.

• Drain the transmission fluid and remove the transmission fluid pan.
  REFER to: Transmission Fluid Pan, Gasket and Filter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Disconnect Park lock pawl solenoid C178 .

• Disconnect Transmission fluid auxiliary pump C1792 .

• Connect Transmission vehicle harness C168A .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C178-1		C1381E-95
  C178-2		C1381E-87

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C178-1		Ground
  C178-2		Ground

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  Park lock pawl solenoid component side pin 1		Park lock pawl solenoid component side pin 2

• Measure:

  Positive Lead	Measurement / Action	Negative Lead
  Park lock pawl solenoid component side pin 1		Ground

• Ignition OFF.

• Connect PCM C1381E .

• Connect Park lock pawl solenoid C178 .

• Connect Transmission fluid auxiliary pump C1792 .

• Remove the park lock pawl solenoid, but leave the wiring harness connected.
  REFER to: Park Lock Pawl Solenoid (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Push on the park lock pawl solenoid pin with the ignition ON and with the ignition OFF.

Yes

The park lock pawl solenoid is operating correctly at this time. For DTC P2888, P2889 and/or P288A, INSPECT and CONNECT all electrical connectors, CLEAR the DTC, then CARRY OUT the KOEO PCM self-test. If DTC P2888, P2889 and/or P288A returns,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures). For DTC P07E4, P07E6, and/or P288B, RESOLVE the park engagement symptom. REFER to: Diagnosis By Symptom (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).

Normal Operation and Fault Conditions

The PCM monitors transmission temperature and if it exceeds normal operating temperatures it sets a DTC. It may even limit powertrain torque to prevent damage to the transmission.

DTC Fault Trigger Conditions

Possible Sources

• Transmission overheating concern

• Ignition ON.

• NOTE: P0218 causes the powertrain to limit torque to prevent transmission overheating. DTC P0218 may set in conjunction with DTC P1783. Using a diagnostic scan tool, clear the DTCs for the PCM.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors the supplied voltage and sets a DTC if supply voltage rises below or above threshold.

DTC Fault Trigger Conditions

Possible Sources

• Charging system concern
• High resistance ground condition
• Low voltage to the PCM

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Using a diagnostic scan tool, carry out the PCM self-test.

• Ignition ON.

• Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• B solenoid or B clutch damaged
• E solenoid or E clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• B solenoid or B clutch damaged
• C solenoid or C clutch damaged
• D solenoid or D clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• C solenoid or C clutch damaged
• D solenoid or D clutch damaged
• E solenoid or E clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• C solenoid or C clutch damaged
• D solenoid or D clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question. If multiple incorrect gear ratio DTCs are set, look for common clutch involved in the operation of those gear applications. If no common clutch errors are found look for line pressure or pump pressure issues.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• C solenoid or C clutch damaged
• E solenoid or E clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• D solenoid or D clutch damaged
• E solenoid or E clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications for all gears. It sets a DTC if it detects ratio errors but is unable to detect which clutch caused the issue. The symptoms may be delayed gear engagements, the transmission logic disables the gear in question.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• A solenoid or A clutch damaged
• B solenoid or B clutch damaged
• D solenoid or D clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications if a non electrical fault is detected for the TCC a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Transmission may overheat if the TCC is continuously open
• TCC valve body control valve stuck off
• Seal faults causing loss of pressure
• TCC mechanical failure

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications if a non electrical fault is detected for the TCC a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• C solenoid or C clutch damaged
• D solenoid or D clutch damaged
• E solenoid or E clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications if a non electrical fault is detected for the TCC a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• B solenoid or B clutch damaged
• D solenoid or D clutch damaged
• E solenoid or E clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications if a non electrical fault is detected for the TCC a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• B solenoid or B clutch damaged
• C solenoid or C clutch damaged
• E solenoid or E clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications if a non electrical fault is detected for the TCC a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• B solenoid or B clutch damaged
• C solenoid or C clutch damaged
• D solenoid or D clutch damaged
• F solenoid or F clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications. It sets a DTC if it detects a non-electrical fault that causes a clutch to fail to apply.

DTC Fault Trigger Conditions

Possible Sources

• Shift solenoid stuck off
• Stuck control valve
• Contamination in the main control
• Clutch damaged
• Faulty seal

• Using a diagnostic scan tool, clear the DTCs for the PCM.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications. It sets a DTC if it detects a non-electrical fault that causes a clutch to fail to release. The customer may experience erratic vehicle operation when one of these diagnostic trouble codes (DTCs) are set.

DTC Fault Trigger Conditions

Possible Sources

• Shift solenoid stuck on
• Stuck control valve
• Contamination in the main control
• Clutch damaged
• Faulty seal
• TCC

• Using a diagnostic scan tool, clear the DTC from the PCM.

• Road test the vehicle.

• Using a diagnostic scan tool, retrieve all PCM continuous memory diagnostic trouble codes (CMDTCs).

Normal Operation and Fault Conditions

The PCM monitors the transmission fluid pressure at all times to insure proper transmission operation. It sets a DTC if it detects low pressure.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• Pump failure

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTCs for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch applications if a non electrical fault is detected for the clutches a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Clutch stuck on
• Clutch stuck off
• Clutch damaged

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM contains Phoenix drivers, which are chips that control the low sides of the solenoid circuits to provide the commanded current. The main processor in the PCM communicates with the Phoenix drivers over a serial interface. The main processor sends the desired solenoid state, and the Phoenix drivers return circuit fault status information.

DTC Fault Trigger Conditions

Possible Sources

• PCM fault

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC from the PCM.

• Repeat the following steps 2 times.
  • Start the engine.
  • Select Drive.
  • Wait 5 seconds.
  • Select Reverse.
  • Wait 5 seconds.
  • Select Park.
  • Ignition OFF.

• Using a diagnostic scan tool, carry out the KOEO and KOER PCM self-tests.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

• Road test the vehicle.

• Ignition OFF.

• Road test the vehicle a second time.

• Using a diagnostic scan tool, carry out the KOEO and KOER PCM self-tests.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

Normal Operation and Fault Conditions

All CIDAS shift solenoids are calibrated from the factory, but not all solenoids are the same. Each solenoid is labelled with a band number, and each main control valve body has a 13-digit solenoid body strategy and a 12-digit solenoid body identification. This information must be downloaded into the PCM, or harsh shifts may occur.

DTC Fault Trigger Conditions

Possible Sources

• Incorrect or corrupted PCM calibration.
• PCM fault

• Ignition ON.

• Using a diagnostic scan tool, clear the diagnostic trouble codes (DTCs) from the PCM.

• Carry out the transmission strategy download.
  REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).
  

• Using a diagnostic scan tool, carry out the KOEO and KOER PCM self-tests.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

Normal Operation and Fault Conditions

The PCM monitors the TCC application and when it falls outside of expected performance ranges a DTC sets.

DTC Fault Trigger Conditions

Possible Sources

• Transmission may overheat if the TCC is continuously open
• TCC valve body control valve stuck off or on
• Seal faults causing loss of pressure
• TCC mechanical failure

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors the one way clutch application and when it falls outside of expected performance ranges a DTC sets..

DTC Fault Trigger Conditions

Possible Sources

• One way clutch failure

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors the transmission fluid temperature at all times and if the TCC control valve is stuck in a position that provides no flow when the TCC is commanded off it may cause the TCC to overheat.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid contamination
• TCC solenoid failure
• TCC failure

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Road test the vehicle.

• Using a diagnostic scan tool, carry out the PCM self-test.

Normal Operation and Fault Conditions

The PCM monitors clutch engagements and when a fault occurs a DTC is set in memory.

DTC Fault Trigger Conditions

Possible Sources

• Clutch faults that cause an engagement in N, R, or a forward gear in R, reverse in a forward gear, or clutch tie up
• Software error

• Ignition ON.

• Using a diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs) from the GSM.

• Ignition ON.

• Using a diagnostic scan tool, clear all diagnostic trouble codes (DTCs) from the PCM.

• Road test the vehicle.

• In a parking lot, shift the vehicle between Park, Drive and Reverse, allowing the vehicle to move in both directions.

• Using a diagnostic scan tool, carry out the PCM self-test.

• Ignition ON.

• Using a diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs) from the PCM self-test.

• Using a diagnostic scan tool, clear all diagnostic trouble codes (DTCs) from the PCM.

• Program the PCM with the latest calibration.
  REFER to: Module Programming (418-01 Module Configuration, General Procedures).
  

• Carry out the transmission strategy download.
  REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).
  

• Road test the vehicle.

• In a parking lot, shift the vehicle between Park, Drive and Reverse, allowing the vehicle to move in both directions.

• Using a diagnostic scan tool, carry out the PCM self-test.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

Normal Operation and Fault Conditions

The PCM monitors transmission fluid temperature during KOEO and KOER PCM self-tests, and assumes the self-tests will be run on a cold vehicle at room temperature.

DTC Fault Trigger Conditions

Possible Sources

• Transmission fluid temperature outside of self-test range
• Incorrect or corrupted PCM calibration.

• Ignition ON.

• Access the  PCM  and monitor the  TFT (Deg C)  PID

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC from the PCM.

• Wait 10 seconds.

• Using a diagnostic scan tool, carry out the PCM self-test.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

Normal Operation and Fault Conditions

The PCM only runs KOER test when the PCM confirms a the vehicle is in P or N and that there is no vehicle speed indicated.

DTC Fault Trigger Conditions

Possible Sources

• Incomplete or incorrect PMI of the PCM.

• Ignition ON.

• Using a diagnostic scan tool, monitor the PID, Transmission Range (TR) Sensor Position - Corrected.

• Select DRIVE.

• Ignition ON.

• Using a diagnostic scan tool, clear the DTC for the PCM.

• Wait 10 seconds.

• Using a diagnostic scan tool, carry out the PCM self-test.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

NOTE: The park pawl can be damaged by ratcheting too many times. Once the root cause of P1706 has been identified and repaired, the park pawl must be inspected to make sure it is free of damage and still capable of holding the vehicle.

Normal Operation and Fault Conditions

Park is normally only commanded when the vehicle is stopped or nearly stopped. If park is engaged while the vehicle is moving, the park pawl will ratchet on the teeth of planetary carrier assembly No. 4. The PCM monitors the park system position using the TR sensor. If the TR sensor shows the transmission is in park while the vehicle is moving, a DTC will set.

DTC Fault Trigger Conditions

Possible Sources

• Clutch stuck off fault
• Hydraulic control fault
• Unintended PCM reset
• PCM fault

• Using a diagnostic scan tool, carry out the KOEO and KOER PCM self-tests.

• Using a diagnostic scan tool, carry out the GSM self-test.

• Access the  PCM  and monitor the  TR_PARK_STAT  PID

• Start the engine.

• Repeat the following steps 3 times while observing PID TR_PARK_STAT. Pause in each gear position.
  • Select Drive.
  • Select Park.
  • Select Reverse.
  • Select Park.

• Road test the vehicle. Pay attention for any gear engagement or shifting symptoms that could indicate a clutch fault or a park system fault.

• Remove the main control valve body.
  REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Remove the transmission fluid auxiliary pump.
  REFER to: Transmission Fluid Auxiliary Pump (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Inspect the park pawl and the park lock teeth on planetary carrier No. 4. Make sure the park lock teeth are not worn or damaged.

• Inspect the park pawl, park pawl actuator rod, TR sensor, and park return spring. Make sure all components are properly installed and free of damage.

• Remove and inspect the park lock pawl solenoid. Make sure the pin is not stuck.
  REFER to: Park Lock Pawl Solenoid (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
  

• Remove and inspect the park lock pawl valve. If the valve or bore is damaged, INSTALL a new main control valve body.
  REFER to: Main Control Valve Body (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
  

• Using a diagnostic scan tool, clear all diagnostic trouble codes (DTCs) from the PCM.

• Access the  PCM  and monitor the  TR_PARK_STAT  PID

• Road test the vehicle. Monitor PID TR_PARK_STAT to make sure park does not engage while moving.

• Using a diagnostic scan tool, retrieve all diagnostic trouble codes (DTCs) from the PCM.

Yes

Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test. After programming the new PCM, CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, General Procedures).

Normal Operation and Fault Conditions

Vehicles with a 10R transmission should not be towed in neutral with the engine off and the drive tires on the ground. When the engine is off, there is no transmission fluid flow in the transmission, and therefore no lubrication. This will lead to internal transmission damage if the vehicle is towed in neutral with the engine off. In case of emergency, the vehicle may be towed in this manner, only up to 55 kph (35 mph) for a distance up to 80 km (50 miles).

DTC Fault Trigger Conditions