Hazard Relay Circuit Shorted Hi
When Monitored: Ignition in RUN and IOD fuse/connector installed.
Set Condition: This code is set if the BCM tries to activate the hazard lamps and excessive current is sinked into the BCM.
Possible Causes are:
- COMBO FLASHER INTERNAL SHORT TO B (+)
- HAZARD SWITCH SENSE CIRCUIT SHORTED TO B (+)
- BCM HAZARD CIRCUIT SHORT TO VOLTAGE
- Remove the combination flasher, from the junction block Using the DRBIII(R), erase BCM DTC's. Operate either the panic feature on the RKE keyfob or trigger the vehicle theft alarm. Using the DRBIII(R), re-read the BCM trouble codes. Did the HAZARD RELAY CIRCUIT SHORTED HI trouble code reset? If yes, go to next step. If no, replace the combination flasher. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
- Remove the Combination Flasher from the Junction Block. Turn ignition off. Remove the Body Control Module from the Junction Block. Turn ignition on. Using a voltmeter measure the Hazard Switch Sense circuit cavity No. 9 to ground at the combination flasher socket in the Junction Block. Was the voltage greater than one volt? If yes, repair the hazard switch sense circuit for a short to voltage. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS. If no, go to next step.
- If there are no possible causes remaining, replace the Body Control Module. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.