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Home >> Volvo >> 2008 >> XC90 V8 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical - Symptom Related Diagnostic Procedures - 2 Of 2 >> Checking The High Level Stop (Brake) Lamps (2003-04) >> Checking The High Level Stop (Brake) Lamps >> Checking The Wiring And The Relay

Checking The Wiring And The Relay

If the stop (brake) lamp does not light, check the cable between rear electronic module terminal #4D and high level stop (brake) lamps terminal #1. Check for an open-circuit according to OPEN-CIRCUIT, PERMANENT FAULTS . Check for a short-circuit to ground according to SHORT-CIRCUIT TO GROUND, PERMANENT FAULTS .

Check the cable between high level stop (brake) lamps terminal #5 and ground. Check for an open-circuit according to OPEN-CIRCUIT, PERMANENT FAULTS . Check for a short-circuit to supply voltage according to SHORT-CIRCUIT TO SUPPLY VOLTAGE. PERMANENT FAULTS .

If the high level stop (brake) lamps are constantly lit, check the cable between rear electronic module terminal #4D and high level stop (brake) lamps terminal #1 for a short-circuit to supply voltage according to SHORT-CIRCUIT TO SUPPLY VOLTAGE. PERMANENT FAULTS .

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Fig 1: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS CORPORATION