Checking the fuse, wiring and sensors
Check that fuse 2 in the integrated relay/fusebox in the engine compartment is intact. Check the cable between stop lamp switch terminal #1 and fuse 11/2 in the integrated relay/fusebox in the engine compartment and between stop lamp switch terminal #2 and splice 53/365. 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 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .
Check the cables between splice 53/365 and central electronic module (CEM) terminal #B4 and between splice 53/365 and engine control module (ECM) terminal #B26. Check for an open-circuit. See Open-circuit, permanent faults . Check for a short-circuit to ground. See Short-circuit to ground, permanent faults . Check for a short-circuit to supply voltage. See Short-circuit to supply voltage. Permanent faults .
HINT: Check the stop lamp switch by measuring the resistance between terminals #1 and #2 on the stop lamp switch. When the brake pedal is not depressed the resistance should be infinite. When the brake pedal is depressed the resistance should be 0 Ω.
Remedy as necessary.
Other information:
- To connect the breakout box to the ABS control module, see Connecting the ABS breakout box
- To connect the breakout box to the engine control module (ECM), see Connecting the breakout box
- To connect the breakout box to the central electronic module, see Connecting the breakout box
- To replace the stop lamp switch, see Stop lamp switch, replacing .
Was a fault detected?
- YES
Refer to Verification
- NO
FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.