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Stoplight Switch (1997)

NOTE: For 1998 Tercel, see DTC 49: STOPLIGHT SWITCH (1998 TERCEL) under DIAGNOSTIC TESTS .
  1. Depress brake pedal. Check stoplight operation. If stoplight bulbs illuminate, go to next step. Replace stoplight bulb or repair wiring as necessary.
  2. Remove ABS ECU with connectors still connected. Depress brake pedal. Check voltage by backprobing Green/White wire at ECU connector A12 terminal No. 12 (Tercel) or connector A15 terminal No. 12 (Paseo). If voltage is not 10-14 volts, go to next step.
  3. Check for open in Green/White wire between stoplight switch terminal No. 1 and ECU connector A12 terminal No. 12 (Tercel) or connector A15 terminal No. 12 (Paseo). See WIRING DIAGRAMS . Repair wiring if necessary. If no problems are found, perform appropriate ECU pin voltage test under PIN VOLTAGE .
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