Low Beam Relay Circuit High

Monitored & Set Condition

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

Possible Causes:

• Intermittent Condition
• Missing Relay
• Open Fuse
• Low Beam Relay
• Body Control Module
• Fused Low Beam Relay Output Circuit Open

Testing

1. Turn the ignition on. With the DRBIII(R), clear all BCM DTC's. Turn the Low Beams on. With the DRBIII(R), read the DTC information. Does the DRBIII(R) read: LOW BEAM RELAY CIRCUIT 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 Low Beam Relay is present. Is the Low Beam Relay present? If yes, go to next step. If no, replace the missing Low Beam Relay. Perform BODY VERIFICATION TEST  .
3. Turn the ignition off. Check the Junction Block Low Beam fuses No. 4 and No. 5. 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 Low Beam Relay. Turn the Low Beams On. Do the Low Beams operate normally? If yes, replace the Low Beam Relay. Perform BODY VERIFICATION TEST  . If no, go to next step.
5. Turn the ignition off. Remove the Low Beam Relay. Measure the voltage of the Fused B+ circuit of the Low Beam Relay. Is the voltage above 10 volts? If yes, replace the Body Control Module. Perform BODY VERIFICATION TEST  . If no, repair the Fused Low Beam Relay Output circuit for an open condition. Perform BODY VERIFICATION TEST  .