Pinpoint Test F : The Defrost System Is Inoperative: Notes
Refer to Heated Window System for schematic and connector information.
Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1013:11 | Heater Rear Defog Switch: Circuit Short To Ground | This DTC sets when the BCM detects the rear window defrost switch input has been active for greater than 60 seconds. |
| B1013:23 | Heater Rear Defog Switch: Signal Stuck Low | This DTC sets when the BCM detects the rear window defrost switch is active during self-test. |
| B112D:11 | Rear Window Defrost LED: Circuit Short To Ground | This DTC sets when the BCM detects a short to ground on the rear window defrost LED circuit. |
| B112D:15 | Rear Window Defrost LED: Circuit Short To Battery Or Open | This DTC sets when the BCM detects an open or short to voltage in the rear window defrost LED circuit. |
| B1C84:12 | Heated Rear Window Relay Output: Circuit Short To Battery | This DTC sets when the BCM detects a short to voltage on the rear window defrost relay control circuit. |
| B1C84:13 | Heated Rear Window Relay Output: Circuit Open | This DTC sets when the BCM detects an open in the rear window defrost relay control circuit. |
| B1C84:14 | Heated Rear Window Relay Output: Circuit Short To Ground or Open | This DTC sets when the BCM detects a short to ground or an open in the rear window defrost relay control circuit. |
Possible Causes
- Fuse(s)
- Rear window defrost relay
- Wiring, terminals or connectors
- Rear window defrost switch
- Rear window defrost grid
- BCM
Visual Inspection and Diagnostic Pre-checks
- Verify the BJB fuse 23 (5A) and 9 (30A) are OK.
- Inspect the rear window defrost relay.
- Inspect the rear window defrost grid and electrical connectors for damage.