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Home >> Mazda >> 2006 >> B2300 L4-2.3L VIN D >> Repair and Diagnosis >> Lighting and Horns >> Testing and Inspection >> Pinpoint Tests >> Interior Lighting System >> Pinpoint Test 1

Pinpoint Test 1

PINPOINT TEST 1: THE INTERIOR LAMPS ARE INOPERATIVE

Normal Operation
Voltage is supplied to the smart junction box (SJB) through circuit (R). Fuse 13 (15 A) in the SJB supplies voltage to the interior lamp/battery saver relay (integral to the SJB). When any door is opened, the door ajar switch closes, signaling the SJB. The SJB monitors the door ajar circuits, and based on the door ajar status, the SJB will supply voltage to the interior lamps on circuit (B/LB).

Possible Causes
- Fuse
- Circuit (B/LB) open or short to ground
- Interior lamp
- SJB

Step 1-Step 4:




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