Backup Lamps Inoperative

Test 1 Through 3:

Test 4 Through 8:

Test 9 Through 10:

SYMPTOM:
*BACKUP LAMPS INOPERATIVE

POSSIBLE CAUSES
OPEN LEFT BACK-UP LAMP BULB
OPEN RIGHT BACK-UP LAMP BULB
TRANSMISSION RANGE SENSOR (NO BACKUP LIGHTS)
INTERMITTENT BACKUP LIGHTS
BACK-UP LAMP GROUND CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
BACK-UP LAMP SUPPLY CIRCUIT SHORT TO GROUND
BACK-UP LAMP SUPPLY CIRCUIT OPEN