Test O

PINPOINT TEST O: THE STOPLAMPS ARE ON CONTINUOUSLY

Test O1-O3:

Test O4-O9:

Normal Operation
Each stoplamp is supplied battery voltage independently. The stoplamp ground circuits are independently controlled by the rear electronic module (REM). When the brake pedal is pressed, the brake pedal position (BPP) switch allows voltage to flow through to circuit 29S-CF1 (OG/BU). Circuit 29S-CF1 (OG/BU) is spliced to carry the voltage to the anti-lock brake system (ABS) module, the powertrain control module (PCM) and the rear electronic module (REM). Voltage to the REM (from the BPP switch) after the splice is carried through circuit 29S-DK30 (OG). When the REM receives voltage from the BPP switch, the REM grounds circuits 31S-LG6 (BK/YE) (high mounted stoplamp), 31S-LG14A (BK/OG) (LH stoplamp) and 31S-LG21A (BK/GN) (RH stoplamp) to illuminate the stoplamps.

Possible Causes
- circuit 29S-CF1 (OG/BU) short to power
- circuit 29S-CF58 (OG/GN) short to power
- circuit 29S-DK30 (OG) short to power
- circuit 29S-RE13 (OG/RD) short to power
- circuit 31S-LG6 (BK/YE) short to ground
- circuit 31S-LG14 (BK/OG) short to ground
- circuit 31S-LG14A (BK/OG) short to ground
- circuit 31S-LG21 (BK/GN) short to ground
- circuit 31S-LG21A (BK/GN) short to ground
- BPP switch
- ABS module
- PCM
- REM