Park Lamp Relay Circuit High

Monitored & Set Condition

1. When Monitored: With ignition On.
2. Set Condition: The BCM detects battery on the Park Lamp Relay when it is attempting to turn on the Park Lamps for more than 5 seconds.

Possible Causes:

• Intermittent Condition
• Missing Relay
• Open Fuse
• Park Lamp Relay
• Body Control Module
• Fused Park Lamp Relay Output Circuit Open

Testing

1. 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 HIGH? 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  .
2. Turn the ignition off. Check the Junction Block to make certain the Park Lamp Relay is present. Is the Park Lamp Relay present? If yes, go to next step. If no, replace the missing Park Lamp Relay. Perform BODY VERIFICATION TEST  .
3. Turn the ignition off. Check the Junction Block Park Lamp fuses No. 23 and No. 9. Are any of the fuses open? If yes, replace the open fuse(s). Perform BODY VERIFICATION TEST  . If no, go to next step.
4. Turn the ignition off. Install a known good relay in place of the Park Lamp Relay. Turn the Park Lamps On. Do the Park Lamps operate normally? If yes, replace the Park Lamp Relay. Perform BODY VERIFICATION TEST  . If no, go to next step.
5. Turn the ignition off. Remove the Park Lamp Relay. Measure the voltage of the Fused B+ circuit of the Park Lamp Relay. Is the voltage above 10 volts? If yes, replace the Body Control Module. Perform BODY VERIFICATION TEST  . If no, repair the Fused Park Lamp Relay Output circuit for an open condition. Perform BODY VERIFICATION TEST  .