Diagnostic Test
- VERIFY THE DTC IS ACTIVE NOTE:
This DTC must be active for the results of this test to be valid.
- Turn the ignition on.
- With the scan tool, read and record the DTCs.
- With the scan tool, read and record the Environmental Data to help identify the conditions in which the DTC was set.
- With the scan tool, erase the DTCs.
- Start the engine.
- Shift the transmission into Reverse.
- With the scan tool, read and the DTCs.
Is the DTC active at this time?
Yes
- Go To 2
No
- Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
- REVERSE GEAR SWITCH OPERATION
- Turn the ignition on.
- With the scan tool, actuate the reverse gear switch.
Does the reverse gear switch actuate correctly?
Yes
- Replace the Anti-Lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
- Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
No
- Replace the Reverse Gear Switch in accordance with the Service Information. For Automatic Transmissions and for Manual Transmissions. For AW60T, refer to SHIFTER, TRANSMISSION, REMOVAL . For C510, refer to SWITCH, BACKUP LAMP, REMOVAL For C514, refer to SWITCH, BACKUP LAMP, REMOVAL .
- Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .