Diagnostic Test
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
- 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, refer to SHIFTER, TRANSMISSION, REMOVAL and for Manual Transmissions. Refer to SWITCH, BACKUP LAMP, REMOVAL, C514 MANUALSWITCH, BACKUP LAMP, REMOVAL, C510 MANUAL .
- Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .