Horn Relay Circuit Shorted Hi
Possible Causes are:
- HORN RELAY INTERNAL SHORT TO VOLTAGE
- HORN RELAY CONTROL CIRCUIT SHORT TO VOLTAGE
- BCM - HORN RELAY CONTROL SHORT TO VOLTAGE
- Substitute the horn relay with a good relay. Using the DRBIII(R), record and erase DTC's. Press the horn pad several times. Using the DRBIII(R), read DTCs. Did the HORN RELAY CKT SHORTED HI trouble code reset? If yes, go to next step. If no, replace the original horn relay. Perform VTSS VERIFICATION TEST 1A under VERIFICATION TESTS.
- Turn ignition off. Remove the horn relay from the Power Distribution Center. Remove the Body Control Module from the Junction Block. Turn ignition on. Measure the voltage between the Horn Relay Control circuit and ground. Is the voltage more than one volt? If yes, repair the Horn Relay Control circuit for a short to voltage. Perform VTSS VERIFICATION TEST 1A under VERIFICATION TESTS. If no, replace the Body Control Module. Perform VTSS VERIFICATION TEST 1A under VERIFICATION TESTS.