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STEP
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INSPECTION
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ACTION
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1
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INSPECT HORN CIRCUIT
Turn the ignition switch off.
Remove the horn relay.
Does the horn continue operating?
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Yes
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Repair or replace the wiring harness. Inspect the system for normal operation.
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No
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Go to the next step.
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2
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INSPECT HORN RELAY
Inspect the horn relay.
Is the horn relay normal?
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Yes
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Install the horn relay, then go to the next step.
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No
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Replace the horn relay. Inspect the system for normal operation.
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3
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INSPECT HORN SWITCH CIRCUIT
Disconnect the clock spring connector.
Does the horn continue operating?
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Yes
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For vehicles with an immobilizer system, go to the next step.
For vehicles without an immobilizer system, repair the circuit.
Inspect the system for normal operation.
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No
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Go to Step 5.
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4
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INSPECT GEM INPUT
Disconnect the GEM connector.
Does the horn continue operating?
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Yes
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Repair or replace the wiring harness. Inspect the system for normal operation.
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No
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Refer to Section 09-14. Inspect the system for normal operation.
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5
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INSPECT HORN SWITCH
Disconnect the horn switch connector.
Measure the resistance between clock spring terminal A (harness-side) and ground under the following conditions.
• The horn switch is depressed: Less than 5 ohms
• The horn switch is not depressed: 10,000 ohms or more
Is the resistance normal?
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Yes
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Replace the clock spring.
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No
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Replace the driver-side air bag module. Inspect the system for normal operation.
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