Rear Window Defogger Grid Inoperative

Tests 1 - 3:

Tests 4 - 9:

Tests 10 - 13:

Tests 14 - 15:

SYMPTOM
REAR WINDOW DEFOGGER GRID INOPERATIVE

POSSIBLE CAUSES
- Rear defogger relay DTC'S
- Intermittent condition
- Rear window defogger ground circuit
- Rear window defogger grid open
- Rear window defogger relay output open
- Rear window defogger relay
- Rear window defogger relay output shorted to ground
- Replace faulty fuse
- Fused B(+) circuit open at relay
- Substitute relay
- Junction block
- Rear window defogger switch sense circuit open
- Rear window defogger switch sense circuit shorted to ground
- Rear window defogger switch sense circuit shorted to voltage
- Automatic zone control module
- Body control module