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Home >> Mitsubishi >> 1994 >> Montero LS, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Code 33 >> Stoplight Switch Circuit

Stoplight Switch Circuit

  1. Check if stoplights are functioning correctly. If stoplights function correctly, go to next step. If stoplights do not function correctly, check stoplight circuit and repair as necessary.
  2. Disconnect ECU connector. Using DVOM, measure voltage between terminal No. 109 and vehicle ground while depressing brake pedal. See Figure . If battery voltage is not present, repair or replace wiring harness between stoplight switch and ECU. See WIRING DIAGRAM  . If battery voltage is present, stoplight switch circuit is okay. Replace ECU.
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