B2337

B2337-HORN CONTROL CIRCUIT HIGH - FCM





For a complete wiring diagram Refer to Diagrams/Electrical.

- When Monitored:

Continuously

- Set Condition:

When the Front Control Module detects excessive current on the Horn Relay Control circuit.





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 and leave on.

With the scan tool, read DTC's.

Does the scan tool display B2337 - HORN CONTROL CIRCUIT HIGH?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2.HORN RELAY

Turn the ignition off.

Install a known good relay in place of the Horn Relay.

With the scan tool erase DTC's

Operate the Horn Switch several times.

Cycle the ignition from on to off 3 times and leave on.

With the scan tool, read DTC's.

Does the scan tool display B2337 - HORN CONTROL CIRCUIT HIGH?

No

- Replace the original Horn Relay.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Go To 3

3. SHORTED POWER DISTRIBUTION CENTER





Remove the Horn Relay.

Disconnect the Front Control Module from the PDC 49 - way connector.

Turn the ignition on.

Measure the voltage between (X4) Horn Relay Control circuit and ground.

Is there any voltage present?

Yes

- Replace the Power Distribution Center.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Front Control Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test