B2339–HORN SWITCH STUCK – CLUSTER
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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HORN SWITCH
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CLOCKSPRING
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(X3) HORN SWITCH SENSE CIRCUIT SHORTED TO GROUND
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(X3) HORN SWITCH SENSE CIRCUIT SHORTED TO (Y13) RADIO CONTROL RETURN
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INSTRUMENT CLUSTER
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Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
With the scan tool, record and erase DTC's
Operate the Horn Switch several times.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display HORN SWITCH STUCK?
Yes
No
2.
HORN SWITCH SHORTED
WARNING:
To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the Horn switch connector.
With the scan tool, erase DTC's
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display HORN SWITCH STUCK?
Yes
No
3.
STEERING WHEEL HARNESS SHORTED
Disconnect the Steering Control Module C5 connector.
With the scan tool, erase DTC's
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display HORN SWITCH STUCK?
Yes
No
4.
CLOCKSPRING SHORTED
Disconnect the Steering Control Module C2 connector.
With the scan tool, erase DTC's
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTC's.
Does the scan tool display HORN SWITCH STUCK?
Yes
No
5.
(X3) HORN SWITCH SENSE SHORTED TO GROUND
Turn the ignition off.
Disconnect the Cluster C2 and C3 connector.
Measure the resistance between (X3) Horn Switch Sense and the (X13) Radio Control Return circuit.
Is the resistance below 1000.0 ohms?
Yes
No
6.
(X3) HORN SWITCH SENSE SHORTED TO GROUND
Measure the (X3) Horn Switch Sense circuit to ground.
Is the resistance below 1000.0 ohms?
Yes
No