B2336

B2336-HORN CONTROL CIRCUIT LOW







- When Monitored:
With the ignition on.

Battery voltage greater than 10.4 volts.

- Set Condition:
When the Totally Integrated Power Module (TIPM) detects the Horn Control Output circuit is shorted to ground.





1. VERIFY DTC B2336-HORN CONTROL CIRCUIT LOW IS ACTIVE
1. With the scan tool, erase TIPM DTCs.
2. Operate the Horn Switch several times.
3. With the scan tool, read TIPM DTCs.

Does the scan tool display active DTC B2336-HORN CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (X21) OR (X22) HORN CONTROL OUTPUT CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Horn 1 C1 harness connector.
3. Disconnect the Horn 2 C1 harness connector.
4. Disconnect the TIPM C11 harness connector.
5. Measure the resistance between ground and the (X21) and (X22) Horn Control Output circuits at the Horn 1 and 2 C1 harness connectors.

Is the resistance below 100 Ohms?

Yes

- Repair the short to ground in the (X21) or (X22) Horn Control Output circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. HORN




1. Connect the TIPM C11 harness connector.
2. Turn the ignition on, engine not running.
3. With the scan tool, actuate the Horn.
4. Using a 12-volt test light connected to ground, check the (X21) and (X22) Horn Control Output circuits at the Horn 1 and 2 C1 harness connectors.

Does the test light illuminate brightly and flash on and off?

Yes

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

No

- Go To 4

4. TOTALLY INTEGRATED POWER MODULE (TIPM)

NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.