Pinpoint Tests: Notes
The Horn Is Inoperative
Refer to HORN/CIGAR LIGHTER for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Horn - System Operation and Component Description .
DTC Chart
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| B1C55:12 | Horn Relay: Circuit Short to Battery | A Continuous Memory Diagnostic Trouble Code (CMDTC) that sets when the BCM detects a short to voltage on the horn relay control circuit. The BCM disables the horn when this DTC is set. |
| B1C55:14 | Horn Relay: Circuit Short to Ground or Open | This DTC sets when the BCM detects a short to ground or an open on the horn relay control circuit. |
Possible Sources
- Fuse
- Wiring, terminals or connectors
- Clockspring
- Horn
- Horn relay
- Horn switch (part of driver airbag module)
- BCM
Visual Inspection and Diagnostic Pre-checks
Verify the BJB fuse 21 (20A) is OK.