Rear Window Defogger Grid Inoperative

Test 1 - 3:

Test 4 - 9:

Test 10 - 13:

Test 14 - 15:

SYMPTOM
REAR WINDOW DEFOGGER GRID INOPERATIVE

POSSIBLE CAUSES
- Rear defogger relay DTC's
- Intermittent condition
- Rear window defogger ground CKT
- 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(+) CKT open at relay
- Substitute relay
- Junction block
- Rear window defogger switch sense CKT open
- Rear window defogger switch sense CKT shorted to ground
- Rear window defogger switch sense CKT shorted to voltage
- Automatic zone control module
- Body control module