Lincoln Aviator: Automatic Transmission External Controls - 10-Speed Automatic Transmission – 10R60 / Diagnosis and Testing - External Controls

Normal Operation and Fault Conditions

For progressive range selection, when the GSM is in the (D) position, the vehicle is not moving, and either the plus (+) or minus (-) switch is pressed, the IPC displays all available gear positions 1st through 10 are displayed with 1st gear highlighted. If the plus (+) switch is then pressed, the available gear positions are no longer displayed, until either the plus (+) or minus (-) switch is pressed again. The + and - switches used for the progressive range selection are shared with the Selectshift™ system.

Possible Sources

• Communication concern
• Selectshift™ concern
• PCM fault
• IPC fault

• Ignition ON.

• Using the diagnostic scan tool, carry out the network test.

• Ignition ON.

• OPERATE the Selectshift™ system and upshift and downshift the transmission.

Normal Operation and Fault Conditions

The GSM requires an operating voltage between 9 and 16 volts. The GSM receives this voltage from the BCM and has dual ground circuits. Excessive resistance or an open in one or more of these circuits, a discharged battery or a inoperative charging system results in the GSM setting a DTC.

DTC Fault Trigger Conditions

Possible Sources

• Battery
• Fuses
• Wiring, terminals or connectors
• GSM

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Ignition OFF.

• Ignition ON.

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

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

• Carry out the Battery Condition Test.
  REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).
  

• Ignition OFF.

• Disconnect GSM C2503.

• Ignition ON.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2503-1		Ground

• Ignition OFF.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2503-9		Ground
  C2503-18		Ground

• Ignition OFF.

• Disconnect GSM C2503 and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Connect GSM C2503 and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Normal Operation and Fault Conditions

The GSM requires an operating voltage between 9 and 16 volts. The GSM receives this voltage from the BCM and has dual ground circuits. Excessive resistance or an open in one or more of these circuits, a discharged battery or a inoperative charging system results in the GSM setting a DTC.

DTC Fault Trigger Conditions

Possible Sources

• Charging system concern
• Wiring, terminals or connectors
• GSM

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

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

• Turn off all interior lights, exterior lights and accessories.

• NOTE: Do not allow the engine speed to increase above 2,000 RPM while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2,000 RPM, turn the engine off and restart the engine before performing this step. Start and run the engine at approximately 1,500 RPM for 3 minutes while monitoring the battery voltage.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

• Ignition OFF.

• Ignition ON.

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

• Ignition OFF.

• Disconnect GSM C482A and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

Normal Operation and Fault Conditions

The GSM communicates with the IPC through messages sent over HS-CAN.

DTC Fault Trigger Conditions

Possible Sources

• Communication concern
• High network traffic
• Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
• IPC

• Ignition ON.

• Using a diagnostic scan tool, carry out the network test.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Road test the vehicle.

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

• Check all diagnostic trouble codes (DTCs) from the GSM self-test.

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

• Using a diagnostic scan tool, carry out the self-test for all modules.

• Retrieve the DTCs from all modules.

Yes

CHECK OASIS for any applicable TSB. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern, INSTALL a new IPC.    Click here to access Guided Routine (IPC). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The GSM communicates with the BCM through messages sent over HS-CAN.

DTC Fault Trigger Conditions

Possible Sources

• Communication concern
• High network traffic
• GSM
• BCM

• Connect the diagnostic scan tool.

• Check that a vehicle session can be established using the scan tool.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

• Ignition ON.

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

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

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

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Road test the vehicle.

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

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

• CHECK the vehicle service history for recent service actions related to the BCM or GSM. If recent service history is found:
  • verify correct replacement module was installed
    • HVBOM may be used to verify correct part application
  • verify the configuration of replacement module was correct
    • re-configure module using as-built data if prior configuration is suspect
  • verify the module was not obtained from a like vehicle and installed into customer vehicle
    • return the swapped module to source vehicle and obtain new replacement module

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect the BCM and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Reconnect the BCM and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes	CHECK OASIS for any applicable TSB. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern,    Click here to access Guided Routine (BCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The GSM communicates with the ABS module through messages sent over HS-CAN. The modules exchange information such as gear position and vehicle speed.

DTC Fault Trigger Conditions

Possible Sources

• Communication concern
• High network traffic
• ABS
• GSM

• Ignition ON.

• Using a diagnostic scan tool, carry out the network test.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

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

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

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Road test the vehicle.

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

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

• CHECK the vehicle service history for recent service actions related to the ABS or AWD. If recent service history is found:
  • verify correct replacement module was installed
    • HVBOM may be used to verify correct part application
  • verify the configuration of replacement module was correct
    • re-configure module using as-built data if prior configuration is suspect
  • verify the module was not obtained from a like vehicle and installed into customer vehicle
    • return the swapped module to source vehicle and obtain new replacement module

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect the ABS module and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Reconnect the ABS module and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Yes	CHECK OASIS for any applicable TSB. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern,    Click here to access Guided Routine (ABS). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The GSM uses information contained in messages from the PCM sent on both the HS-CAN and the private Transmission CAN.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
• PCM
• GSM

• Ignition ON.

• Using the diagnostic scan tool, carry out the network test.

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

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Disconnect GSM C2503 .

• Disconnect GWM C2431 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2503-2		C2431-17
  C2503-3		C2431-18

• Disconnect PCM C175T .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2503-13		C175T-23
  C2503-14		C175T-8

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

• Reconnect all electrical connectors that were previously disconnected. Make sure they seat and latch properly.

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

• Road test the vehicle.

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

• Using the diagnostic scan tool, retrieve all continuous memory diagnostic trouble codes (CMDTCs) from all modules.

Yes	CHECK OASIS for any applicable TSB. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern,    Click here to access Guided Routine (PCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The GSM uses the drivers door unlock switch input and drivers door status input to shift the transmission into the park position when the operator is preparing to exit the vehicle.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
• DCME
• GSM
• BCM

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

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

• Access the  GSM  and monitor the  DR_AJAR_HWI  PID

• Open and close the driver door several times while monitoring PID DR_AJAR_HWI and the driver door status on the IPC.

• Disconnect GSM C2503 .

• Disconnect BCM C2280E .

• Disconnect DCME C525 .

• Inspect the connectors for damaged or pushed-out terminals.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2280E-33		C525-25

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2503-15		C525-25

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C2503-15		Ground

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Ignition OFF.

• Ignition ON.

• Repeat the following steps 3 times:
  • Open the driver door.
  • Wait 10 seconds
  • Close the driver door.
  • Wait 10 seconds.

• Make sure the driver door is fully closed.

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

• Ignition OFF.

• Disconnect the DCME and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Reconnect the DCME and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

• Ignition OFF.

• Disconnect the GSM and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Reconnect the GSM and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and determine if the concern is still present.

Normal Operation and Fault Conditions

When a gear select push button is pressed, the GSM illuminates the corresponding gear indicator LED.

DTC Fault Trigger Conditions

Possible Sources

• GSM calibration
• GSM

• VERIFY the GSM calibration is at the latest level.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Ignition OFF.

• Wait 10 seconds.

• Start the engine.

• Push each gear select push button and pause. Observe the illumination of the corresponding LED for each button.

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

Normal Operation and Fault Conditions

The GSM contains 3 contacts beneath each gear select push button. If 1 contact for a push button does not match the other 2 contacts, or if 2 or more contacts are stuck closed, indicating a stuck button, a DTC will set.

DTC Fault Trigger Conditions

Possible Sources

• Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
• Foreign material or debris on or near the GSM buttons.
• GSM

• INSPECT the gear shift buttons for debris or foreign materials that might cause binding or sticking.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

• Using the diagnostic scan tool, retrieve all DTCs.

• PERFORM a GSM self-test.

• Connect the diagnostic tool.

• Ignition ON.

• Using a diagnostic scan tool, MONITOR the following PIDs while pressing and releasing the P, R, N and D buttons. Record whether or not the PID changes state and whether or not the button feels sticky or gets stuck. Record PID values before, during and after pressing the buttons:
  • P button: SBW_PRK_SW_1, SBW_PRK_SW_2, SBW_PRK_SW_3
  • R button: SBW_REV_SW_1, SBW_REV_SW_2, SBW_REV_SW_3
  • N button: SBW_NEU_SW_1, SBW_NEU_SW_2, SBW_NEU_SW_3
  • D button: SBW_DRV_SW_1, SBW_DRV_SW_2, SBW_DRV_SW_3

• Wait 1 minute.

• Using the diagnostic scan tool, retrieve all DTCs.

Normal Operation and Fault Conditions

Each paddle shift switch is a momentary contact switch integral to the steering wheel. The SelectShift™ feature allows the operator to upshift or downshift without removing their hands from the steering wheel.

Possible Sources

• Circuitry open/shorted
• Paddle shift switches
• PCM

• Road test the vehicle. Use the upshift and downshift paddle switches to upshift and downshift the transmission.

• Remove the driver air bag module.
  REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  

• Disconnect Upshift paddle switch C2428 .

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Paddle Switch Component side resistance pin 1.		Paddle Switch Component side resistance pin 2.

• Ignition OFF.

• Disconnect Clockspring C218B (for vehicles without active steering).

• Disconnect Clockspring C218G (for vehicles with active steering).

• Inspect the connector for damaged or pushed-out terminals.

• Ignition ON.

• without active steering Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218B-1		Ground

• with active steering Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218G-2		Ground

• Ignition OFF.

• Disconnect Clockspring C218A (for vehicles without active steering).

• Disconnect Clockspring C218C (for vehicles with active steering).

• Disconnect PCM C1551B .

• Inspect the connectors for damaged or pushed-out terminals.

• without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-5		C1551B-53

• with active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-3		C1551B-53

• Without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-5		Ground

• With active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-3		Ground

• Without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Component Side C218B-1		Component Side C218A-5

• With active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Component Side C218C-3		Component Side C218G-2

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).

• Remove the driver air bag module.
  REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  

• Disconnect Downshift paddle switch C2429 .

• Inspect the connector for damaged or pushed-out terminals.

• Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Component side resistance pin 3		Component side resistance pin 4

• Ignition OFF.

• Disconnect Clockspring C218B (for vehicles without active steering).

• Disconnect Clockspring C218G (for vehicles with active steering).

• Inspect the connector for damaged or pushed-out terminals.

• Ignition ON.

• without active steering Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218B-2		Ground

• with active steering Measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218G-6		Ground

• Ignition OFF.

• Disconnect Clockspring C218A (for vehicles without active steering).

• Disconnect Clockspring C218C (for vehicles with active steering).

• Disconnect PCM C1551B .

• Inspect the connectors for damaged or pushed-out terminals.

• without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-6		C1551B-65

• with active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-4		C1551B-65

• Without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-6		Ground

• With active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-4		Ground

• Without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Component Side C218B-2		Component Side C218A-6

• With active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  Component Side C218G-6		Component Side C218C-2

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).

• Remove the driver air bag module.
  REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  REFER to: Driver Airbag (501-20B Supplemental Restraint System, Removal and Installation).
  

• Disconnect Clockspring C218A (for vehicles without active steering).

• Disconnect Clockspring C218C (for vehicles with active steering).

• Disconnect PCM C1551B .

• Inspect the connectors for damaged or pushed-out terminals.

• Without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-7		Ground

• With active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-1		Ground

• without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-7		C1551B-73

• with active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-1		C1551B-73

• Disconnect Clockspring C218B (for vehicles without active steering).

• Disconnect Clockspring C218G (for vehicles with active steering).

• Inspect the connector for damaged or pushed-out terminals.

• without active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218A-7		C218B-3

• with active steering measure:
  Click to display connectors
  

  Positive Lead	Measurement / Action	Negative Lead
  C218C-1		C218G-5

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

When the GSM initializes at key on, it carries out an internal memory and configuration test on itself.

DTC Fault Trigger Conditions

Possible Sources

• Incorrect or corrupted GSM calibration.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, Program the GSM with the latest calibration.

• Ignition OFF.

• Ignition ON.

• Road test the vehicle.

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

Normal Operation and Fault Conditions

The GSM and the PCM communicate frequently in order to operate the transmission shift sequences. It sets a DTC if the GSM detects an incorrect PCM software set.

DTC Fault Trigger Conditions

Possible Sources

• Incorrect or corrupted PCM calibration.

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, reprogram the original PCM with the As-Built data following scan tool instructions.

• Ignition OFF.

• Ignition ON.

• Wait 10 seconds.

• Using a diagnostic scan tool, carry out the GSM 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 (307-01B Automatic Transmission - 10-Speed Automatic Transmission – 10R80 MHT, General Procedures).

Normal Operation and Fault Conditions

The GSM expects to receive network data from other modules on HS-CAN. The GSM will set a DTC if it receives an invalid or incomplete message from another module. Incomplete or corrupted messages typically result from high network traffic preventing the complete message from being received within the calibrated time limit.

DTC Fault Trigger Conditions

Possible Sources

• High network traffic event
• Incorrect PMI
• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• Suspect module

• Using a diagnostic scan tool, carry out the self-test on the suspect module.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

• Using a diagnostic scan tool, clear all diagnostic trouble codes from the GSM.

• Road test the vehicle.

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

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

• CHECK the vehicle service history for recent service actions related to the suspect module or to the GSM. If recent service history is found:
  • verify correct replacement module was installed
    • HVBOM may be used to verify correct part application
  • verify the configuration of replacement module was correct
    • re-configure module using as-built data if prior configuration is suspect
  • verify the module was not obtained from a like vehicle and installed into customer vehicle
    • return the swapped module to source vehicle and obtain new replacement module

• Ignition OFF.

• Refer to Wiring Diagrams Cell 14 for schematic and connector information. Disconnect all in-line CAN connectors between the GSM and the suspect module.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion (install new connector or terminals - clean module pins)
  • damaged or bent pins - install new terminals/pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Ignition OFF.

• Disconnect the suspect module and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Reconnect the suspect module and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and verify the concern is still present.

Yes

CHECK OASIS for any applicable TSB. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern, INSTALL a new suspect module. For U0401,    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 U0422,    Click here to access Guided Routine (BCM). Internet Explorer version 11 or greater is required to perform this Pinpoint Test.

Normal Operation and Fault Conditions

The GSM and the PCM communicate frequently in order to operate the transmission gear shift sequences. It sets a DTC if the GSM detects an incorrect PCM information.

DTC Fault Trigger Conditions

Possible Sources

• Low system voltage
• Incorrect PMI
• Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
• PCM or TCM fault

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

• Using a diagnostic scan tool, review all continuous memory diagnostic trouble codes (CMDTCs) in all modules.

NOTE: If a GSM self-test is carried out, the driver door must be fully closed. A false P166B DTC may set if the driver door is not fully closed during the self-test.

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

• Road test the vehicle.

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

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

• CHECK the vehicle service history for recent service actions related to the PCM. If recent service history is found:
  • verify correct replacement module was installed
    • HVBOM may be used to verify correct part application
  • verify the configuration of replacement module was correct
    • re-configure module using as-built data if prior configuration is suspect
  • verify the module was not obtained from a like vehicle and installed into customer vehicle
    • return the swapped module to source vehicle and obtain new replacement module

• Ignition OFF.

• Disconnect all PCM connectors and all related in-line electrical connectors.

• Using a good light source, inspect all disconnected electrical connectors for the following:
  • corrosion - install new connector or terminal and clean the module pins
  • damaged or bent pins - install new terminals or pins
  • pushed-out pins - install new pins as necessary
  • spread terminals - install new terminals as necessary

• Reconnect the PCM and all related in-line electrical connectors. Make sure they seat and latch correctly.

• Operate the system and verify the concern is still present.

Yes

CHECK OASIS for any applicable TSB. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSB addresses this concern,    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

• Gear Shift Module (GSM)
  • If any diagnostic trouble codes (DTCs) are present in the GSM, RESOLVE those first. REFER to the DTC Chart.
  • Using a diagnostic scan tool, access the GSM and monitor PID GEAR_CMD. Push each gear shift button and make sure PID GEAR_CMD matches each selected gear. If PID GEAR_CMD does not change with the push buttons, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
    
• Powertrain Control Module (PCM)
  • If any diagnostic trouble codes (DTCs) related to the transmission or GSM are present in the PCM, resolve those first. REFER to the Master DTC Chart.
• Internal transmission components
  • Carry out the line pressure test. If line pressure is low, refer to the Line Pressure Diagnosis Chart for further diagnosis. REFER to: Special Testing Procedures (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
    
  • Check the park lock pawl solenoid pin for being stuck extended.
  • Inspect the park pawl, park pawl actuator rod, TR sensor and park return spring for damage or binding. Make sure all park components are properly installed and connected. REPAIR or INSTALL new components as necessary. REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
    
  • 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, Removal and Installation).
    
  • Disassemble the main control valve body and inspect the park lock pawl valve hydraulic circuits for damage, leaks or blockage. CLEAN or INSTALL new components as necessary. REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
    
  • The shift-by-wire variant of the 10R transmission uses hydraulic pressure from the B and D clutches to push the system out of park. Check the B and D clutches for a does not apply condition. REFER to: B Clutch (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
    REFER to: D Clutch (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
    

Possible Sources

• Low line pressure
• Park lock pawl solenoid
• Park pawl components
• Clutch fault

Normal Operation and Fault Conditions

• The criteria for the return to park feature was met
  • Check the system for normal operation. REFER to: External Controls - System Operation and Component Description (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission – 10R60, Description and Operation).
    
• Driver door ajar switch, circuits, Body Control Module (BCM) or Gear Shift Module (GSM) fault
  • Open then close the driver door. If the door ajar icon is illuminated on the IPC with the door closed, REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).
    
  • If the door ajar and locks are working correctly, GO to Pinpoint Test H

Possible Sources

• Normal system operation
• Driver door ajar switch or circuitry
• BCM
• GSM

Normal Operation and Fault Conditions

• Driver door ajar switch, circuits, Body Control Module (BCM) or Gear Shift Module (GSM) fault
  • Open then close the driver door. If the door ajar icon is illuminated on the IPC with the door closed, REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).
    
  • If the door ajar and locks are working correctly, GO to Pinpoint Test H

Possible Sources

• Driver door ajar switch or circuitry
• BCM
• GSM

Normal Operation and Fault Conditions

• Gear Shift Module (GSM)
  • If any diagnostic trouble codes (DTCs) are present in the GSM, RESOLVE those first. REFER to the DTC Chart.
  • Using a diagnostic scan tool, access the GSM and monitor PID GEAR_CMD. Push each gear shift button and make sure PID GEAR_CMD matches each selected gear. If PID GEAR_CMD does not change with the push buttons, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission – 10R60, Removal and Installation).
    
• Park is manually released
  • Make sure park is not manually released. REFER to: Transmission Park by Wire Manual Release (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission – 10R60, General Procedures).
    
• Clutch fault
  • Once out of park, the shift-by-wire variant of the 10R transmission uses hydraulic pressure from the A, B, C, D or F clutches to hold the system out of park. If any other observable symptoms indicate one of those clutches is stuck on, RESOLVE that symptom first. REFER to: Diagnosis By Symptom (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Diagnosis and Testing).
    
• Park lock pawl solenoid
  • Check the park lock pawl solenoid pin for being stuck extended.
• Internal transmission park components
  • Inspect the park pawl, park pawl actuator rod, TR sensor and park return spring for damage or binding. Make sure all park components are properly installed and connected. REPAIR or INSTALL new components as necessary. REFER to: Transmission (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Overhaul).
    
  • 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, Removal and Installation).
    

Possible Sources

• Park is manually released
• Clutch fault
• Internal transmission components