9000 - 9999: 9329

9329-HORN SWITCH CIRCUIT STUCK

For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
Continuously with the ignition on.

- Set Condition:
The Steering Control Module senses that the Horn Switch is in the Set position for greater than 50 seconds.





Diagnostic Test

1. DTC IS ACTIVE
NOTE: If P0562-BATTERY VOLTAGE LOW or P0563-BATTERY VOLTAGE HIGH is set along with this DTC, diagnose the battery voltage DTC first.

Ignition on, engine not running.
With the Scan Tool, select View DTCs in the Steering Control Module.
Is the DTC status Active at this time?

Yes

- Go to 2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1. Verification Tests.

2. HORN SWITCH SIGNAL CIRCUIT SHORT TO GROUND

NOTE: Before proceeding, thoroughly inspect the wiring harness and connectors between the Horn Switch and the Right Steering Switch for a short to ground or to any other circuit.

Measure the resistance between the Horn Switch circuit at the harness connector to the Right Switch and ground (include the metal casing at the back side of the Airbag).
Is the resistance below 5.0 ohms?

Yes

- Repair the Horn Switch circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Verification Tests.

No

- Go to 3


3. HORN SWITCH
Measure the resistance between the Horn Switch circuit and the Horn Switch Return circuit at the harness connector to the horn switch.
Is the resistance below 5.0 ohms?

Yes

- Replace the Horn Switch.
- Perform BODY VERIFICATION TEST - VER 1. Verification Tests.

No

- Go to 4


4. RIGHT STEERING SWITCH
Turn the ignition off.
Replace the Right Steering Switch.
Turn the ignition on.
Press and release the Horn Switch several times.
With the Scan Tool, Clear Stored DTCs in the Steering Control Module.
With the Scan Tool, select Data Display and view the Horn switch data.
While monitoring the Horn switch data, press and release the Horn Switch several times.
Does the Horn switch data change from Set to Not Set when the switch is pressed and released?

Yes

- Test Complete.

No

- Replace the Steering Control Module (SCM).
- Perform BODY VERIFICATION TEST - VER 1. Verification Tests.