B2336

B2336-HORN CONTROL CIRCUIT LOW





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on and battery Voltage greater than 10.4 Volts.

- Set Condition:
If the (X2) Horn Control Output circuit is shorted to ground for more than 500 ms.





1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) B2336-HORN CONTROL CIRCUIT LOW IS ACTIVE
1. Turn the ignition on.
2. Using a scan tool, erase TIPM DTCs.
3. Operate the Horn Switch several times.
4. Using a scan tool, read TIPM DTCs.

Is DTC B2336-HORN CONTROL CIRCUIT LOW active?

Yes

- Go To 2

No

- 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, corroded, or contaminated terminals.
- Perform the BODY VERIFICATION TEST Body Verification Test.

2. CHECK FOR SHORTED HORN

NOTE: Disconnect each horn one at a time Perform the following in an attempt to isolate a shorted horn.

1. Operate the Horn Switch several times.
2. Using a scan tool, read TIPM DTCs.

Does the scan tool display active DTC B2336-HORN CONTROL CIRCUIT LOW for each disconnected horn?

Yes

- Go To 3

No

- Replace the shorted Horn(s) as necessary.
- Perform the BODY VERIFICATION TEST Body Verification Test.

3. CHECK (X2) HORN CONTROL OUTPUT CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Horn 1 and Horn 2 connector.
3. Disconnect the TIPM C1 harness connector.
4. Measure the resistance of the (X2) Horn Control Output circuit between ground and the TIPM C1 harness connector.

Is the resistance below 10K ohms?

Yes

- Repair the (X2) Horn Control Output circuit for a short to ground.
- Perform the BODY VERIFICATION TEST Body Verification Test.

No

- NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, and terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors, and repair as necessary. If no problems are found, replace the TIPM.
- Perform the BODY VERIFICATION TEST Body Verification Test.