LOW BEAM RELAY CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W


  • When Monitored:

    With ignition on

  • Set Condition:

    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
  
MISSING RELAY
  
OPEN FUSE
  
LOW BEAM RELAY
  
BODY CONTROL MODULE
  
FUSED LOW BEAM RELAY OUTPUT CIRCUIT OPEN
  



Diagnostic Test

1.INTERMITTENT CONDITION






Does the scan tool read: LOW BEAM RELAY CIRCUIT HIGH?

Yes
  • Go To2


No
  • The condition is not present at this time. Monitor scan tool parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins that may apply. Visually inspect the related wiring harness and connector terminals.
  • Perform BODY VERIFICATION TEST - VER 1.

2.MISSING RELAY




Is the Low Beam Relay present?

Yes
  • Go To3


No
  • Replace the missing Low Beam Relay.
  • Perform BODY VERIFICATION TEST - VER 1.

3.OPEN FUSE




Are any of the fuses open?

Yes
  • Replace the open fuse.
  • Perform BODY VERIFICATION TEST - VER 1.


No
  • Go To4

4.LOW BEAM RELAY





Do the Low Beams operate normally?

Yes
  • Replace the Low Beam Relay.
  • Perform BODY VERIFICATION TEST - VER 1.


No
  • Go To5

5.BODY CONTROL MODULE





Is the voltage above 10 volts?

Yes
  • Replace the Body Control Module.
  • Perform BODY VERIFICATION TEST - VER 1.


No
  • Repair the Fused Low Beam Relay Output circuit for an open condition.
  • Perform BODY VERIFICATION TEST - VER 1.