Park Lamp Relay Circuit Low

Monitored & Set Condition

When Monitored: With ignition On.
Set Condition: The BCM detects low (ground) on the Park Lamp Relay even though it is not attempting to turn on the Park Lamps for more than 5 seconds.

Possible Causes:

Testing

Turn the ignition on. With the DRBIII(R), clear all BCM DTC's. Turn the Park Lamps on. With the DRBIII(R), read the DTC information. Does the DRBIII(R) read: PARK LAMP RELAY CKT LOW? If yes, go to next step. If no, the condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform BODY VERIFICATION TEST .
Turn the ignition off. Disconnect the Park Lamp Relay. Measure the resistance between ground and the Park Lamp Relay Control circuit. Is the resistance below 5.0 ohms? If yes, repair the Park Lamp Relay Control circuit for a short to ground. Perform BODY VERIFICATION TEST . If no, go to next step.
Turn the ignition off. Disconnect the Park Lamp Relay harness connector. Measure the voltage of the Park Lamp Relay harness connector coil side feed circuit to ground. Is the voltage above 10.0 volts? If yes, replace the Park Lamp Relay. Perform BODY VERIFICATION TEST . If no, replace the Body Control Module. Perform BODY VERIFICATION TEST .