Symptom:
*HORNS INOPERATIVE
POSSIBLE CAUSES
HORNS
CLOCKSPRING
HORN SWITCH
HORN SWITCH GROUND
HORN SWITCH SENSE OPEN
CHECK FOR BCM DTC’S
HORN RELAY
HORN RELAY OUTPUT CIRCUIT OPEN
HORN GROUND CIRCUIT OPEN
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the current Body Control Module DTC’s.
Does the DRBIIIt display any Horn related DTC’s?
All
Yes → Refer to Ignition, Power, Accessory for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 With the DRBIIIt, actuate the Horn Relay.
Do the horns operate?
All
Yes → Go To 3
No → Go To 7
3 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE
DOWN ON A HARD SURFACE, THEAIRBAG WILL PROPEL INTO THE AIR
IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN SERIOUS OR
FATAL INJURY.
Gain access to the horn switch.
Inspect the Horn Switch ground circuit.
Is the Horn Switch ground wire connected properly?
All
Yes → Go To 4
No → Repair the horn switch ground as necessary.
Perform BODY VERIFICATION TEST - VER 1.
267
IGNITION, POWER, ACCESSORY
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