Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 2002 >> Grand Cherokee Overland >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Diagnostic Tests >> Exterior Lighting Systems >> Low Beam Relay Circuit Shorted Hi

Low Beam Relay Circuit Shorted Hi

When Monitored: Ignition in RUN and IOD fuse/connector installed.

Set Condition: This condition is set when the BCM is trying to activate the to beam relay and excessive current is sinked into the BCM.

Possible Causes are:

  1. Install a known-good relay in place of the Low Beam relay. Does the system now operate correctly? If yes, replace the Low Beam relay. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS. If no, go to next step.
  2. Remove the Low Beam relay from the Junction Block. Turn ignition off. Remove the Body Control Module from the Junction Block. Turn ignition on. Using a voltmeter measure the Low Beam Relay control circuit cavity No. 86 to ground at the Junction Block. Was the voltage more than one volt? If yes, replace the junction block. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS. If no, replace the Body Control Module. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
scientia non olet · About Mike's Workshop Manuals