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 INOPERATIVE
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Ignition on, engine not running. Place foot firmly on brake pedal. Place the shift lever in the reverse position. Do either of the back-up lamps work? Yes --> Go To 2 No --> Go To 3 |
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| 2 | If one backup lamp works, the problem must be in the bulb or the wiring to the one that doesn't work. Check the bulb, Backup Lamp Supply circuit and the Ground circuit to the one that does not work. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorted and open circuits. View repair options. Repair Repair as necessary. |
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| 3 | Turn the ignition off to the lock position. Remove the Starter Relay.
CAUTION:
Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the starter. Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmission Adapter kit 8333-1A. Ignition on, engine not running. Press the "Reverse Light Test" button on the Transmission Simulator while observing the Back-up Lamps. Do either of the Back-up Lamps come on? Yes --> Replace the Transmission Range Sensor per the Service Information. No --> Go To 4 |
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| 4 | Remove both Backup Lamp bulbs.
NOTE:
Check the Backup Lamp Sockets and Clean/repair as necessary. Measure the resistance of the Backup Lamp bulbs. Is the resistance above 5.0 ohms on either bulb? Yes --> Replace the Backup Lamp bulb(s). Verify the bulbs illuminate with the Transmission Simulator. No --> Go To 5 |
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| 5 | Turn the ignition off to the lock position. Disconnect the TRS harness connector. Ignition on, engine not running. Using a 12-volt test light connected to ground, check the Fused Ignition Switch Output circuit in the TRS harness connector.
NOTE:
The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes --> Go To 6 No --> Repair the Fused Ignition Switch Output circuit for an open. If the fuse is open make sure to check for a short to ground. |
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| 6 | Turn the ignition off to the lock position. Install the Transmission Simulator, Miller tool #8333 and the Electronic Transmission Adapter kit 8333-1A. Remove the Backup Lamp bulb(s). Ignition on, engine not running.
NOTE:
Check connectors - Clean/repair as necessary. Using a 12-volt test light connected to ground, check the Backup Lamp Supply circuit in both Backup Lamp sockets while pressing the Reverse Light Test button on the Transmission Simulator. Does the test light illuminate brightly on either Backup Lamb Bulb socket? Yes --> Repair the Backup Lamp Ground circuit for an open. No --> Repair the Backup Lamp Supply circuit for an open. |
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