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Home >> Mazda >> 2008 >> Tribute 2WD L4-2.3L >> Repair and Diagnosis >> Lighting and Horns >> Brake Lamp >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Test 1
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Pinpoint Test 1

PINPOINT TEST 1: ALL THE STOPLAMPS ARE INOPERATIVE

Normal Operation
The brake pedal position switch is supplied voltage through circuit (Y/R) from the smart junction box (SJB). When the brake pedal is applied, the brake pedal position switch routes voltage back to the smart junction box (SJB) and the high mounted stoplamp through circuit (V/W). The SJB provides voltage to the rear lamps when it receives input from the brake pedal position switch indicating that the brake pedal is applied.

Possible Causes
- Fuse
- Wiring, terminals or connectors
- Brake pedal position switch
- SJB

Diagnostic Procedure

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Step 1-Step 4:




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