Diagnostic Test
WARNING: This page is about a different car, the 2018 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
PERFORM FDCM VERIFICATION TEST
CAUTION:
Before removing the FDCM harness connector, clean the connector and locking cam area of dirt and debris. Failure to do so can result in the connector being jammed or damage to the locking cams on the harness connector or module. Do not force the assist arm when releasing or installing the harness connector.
NOTE:
If the PCM or BCM was replaced, refer to the appropriate service information for proper programming procedures.
- Disconnect all jumper wires and reconnect all previously disconnected components and connectors.
- Ensure that all accessories are turned off.
- Ensure that the battery is fully charged.
- With the scan tool, record and erase all DTC(s) from the FDCM
- Start and run the engine for 2 minutes while operating all functions of the system that caused the original concern.
- Turn the ignition off, wait 5 seconds, then turn the ignition on. Using the scan tool, read DTC(s) from the FDCM.
Are any FDCM DTCs present or is the original condition still present?
Yes
- The repair is not complete. Refer to DIAGNOSTIC CODE INDEX for the DTC or symptom that is still present.
No
- The repair is complete.