Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSIS PROCEDURE - *BACKUP LAMPS COME ON WHILE SHIFTER IS NOT IN REVERSE POSITION

TEST	ACTION	APPLICABILITY
1	Ignition on, engine not running. Firmly apply brakes. Place the Shift Lever in the position which causes the Backup Lamps to come on at the wrong time. Do the Backup Lamps come on while the shifter is not in Reverse? Yes --> Go To 2 No --> Go To 5	All
2	Ignition on, engine not running. Place the shift lever in a position that causes the Backup Lamps to come on when they should not. Disconnect the TRS harness connector. NOTE: This will cause a DTC P0706 and possibly other DTC's to be stored in the PCM. They must be erased before returning the vehicle to the customer. Did the Backup Lamps go out when the TRS harness connector was disconnected? Yes --> Go To 3 No --> Go To 4	All
3	If there are no possible causes remaining, view repair. Repair Replace Transmission Range Sensor per the Service Information.	All
4	Turn the ignition off to the lock position. Disconnect the TRS harness connector. Ignition on, engine not running. Measure the voltage of the Backup Light Supply circuit in the TRS harness connector. Is the voltage above 0.5 volt? Yes --> Repair the Backup Lights Supply circuit for a short to voltage. No --> Test Complete.	All
5	The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorts and open circuits. Were there any problems found? Yes --> Repair as necessary. No --> Test Complete.	All