WHEN MONITORED
Continuously with the ignition in the run position.
SET CONDITION
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
POSSIBLE CAUSES
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical Diagnostics article.
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an invalid calibration (checksum value).
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
Continuously when the ignition is in the run position.
When the expected switch state is not correctly sensed by the Shifter Lever Assembly (SLA) Electronic Shift Module (ESM). If the Downshift switch signal is detected as active in gear position other than drive.
| Possible Causes |
|---|
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.
P1C86-1D-PRNDL DISPLAY-CIRCUIT CURRENT OUT OF RANGE
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an problem with the PRNDL display.
| Possible Causes |
|---|
| ESM TO PRNDL DISPLAY RIBBON CABLE CONNECTION |
| TRANSMISSION CONTROL MODULE DTCS |
| TRANSMISSION CONTROL MODULE HARNESS CONNECTIONS |
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article. .
P1C86-82-PRNDL DISPLAY-ALIVE / SEQUENCE COUNTER INCORRECT / NOT UPDATED
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an problem with the PRNDL display.
| Possible Causes |
|---|
| TRANSMISSION CONTROL MODULE DTCS |
| TRANSMISSION CONTROL MODULE HARNESS CONNECTIONS |
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article. .
P1C86-83-PRNDL DISPLAY-VALUE OF SIGNAL PROTECTION CALCULATION INCORRECT
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller detects an problem with the PRNDL display.
| Possible Causes |
|---|
| TRANSMISSION CONTROL MODULE DTCS |
| TRANSMISSION CONTROL MODULE HARNESS CONNECTIONS |
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article. .
Continuously with the ignition in the run position.
If the Shift Lever Assembly controller confirms an invalid TRS message from the TCM.
| Possible Causes |
|---|
| TRANSMISSION CONTROL MODULE DTCS |
| IMPROPER TRS OPERATION |
| TRANSMISSION CONTROL MODULE HARNESS CONNECTIONS |
| SHIFTER LEVER ASSEMBLY |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article. .
Ignition run time is greater than one second.
Battery voltage between 9 and 16 volts.
Engine run time greater than three seconds.
Bus messages not received from the Body Control Module (BCM) for approximately two to five seconds.
| Possible Causes |
|---|
| CAN BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| BODY CONTROL MODULE POWER AND GROUND |
| BCM NOT CONFIGURED CORRECTLY |
| BODY CONTROL MODULE (BCM) |
| MODULE THAT SET THIS DTC |
Ignition run time is greater than one second.
Battery voltage between 9 and 16 volts.
Engine run time greater than three seconds.
Bus messages not received from the Powertrain Control Module (ECM/PCM) for approximately two to five seconds.
| Possible Causes |
|---|
| CAN BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| POWERTRAIN CONTROL MODULE POWER AND GROUND |
| BCM NOT CONFIGURED CORRECTLY |
| POWERTRAIN CONTROL MODULE (ECM/PCM) |
| MODULE THAT SET THIS DTC |
With the ignition on.
Battery voltage between 10 and 16 volts.
Body Control Module (BCM) is configured correctly.
Bus messages not received from the Transmission Control Module (TCM) for approximately 500ms.
| Possible Causes |
|---|
| CAN BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| TRANSMISSION CONTROL MODULE (TCM) POWER AND GROUND |
| BCM NOT CONFIGURED CORRECTLY |
| TRANSMISSION CONTROL MODULE (TCM) |
| MODULE THAT SET THIS DTC |
Ignition run time is greater than one second. Battery voltage between 9.0 and 16.0 volts.
The Powertrain Control Module (PCM) doesn't receive a Body Control Module (BCM) message over the CAN C bus for seven consecutive seconds. The circuit is continuously monitored.
| POSSIBLE CAUSES |
|---|
| CAN C BUS OPEN OR SHORTED CONDITION |
| BODY CONTROL MODULE (BCM) |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding . Refer to STANDARD PROCEDURE in appropriate Transmission Control Module (TCM) Electrical article.