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Home >> Mitsubishi >> 1994 >> Eclipse Base, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Diagnosis & Testing >> Code 22: Stoplight Switch Circuit >> (AWD)
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Code 22: Stoplight Switch Circuit: (AWD)

  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 wiring harness connector. Using DVOM, measure voltage between terminal No. 29 (Green wire) and ground while depressing brake pedal. See Figure. If battery voltage is not present, repair or replace wiring harness between stoplight switch and ECU. If battery voltage is present, go to next step.
  3. Remove right quarter panel trim in front of wheelwell. Disconnect resistor connector (next to harness ground connection). Turn ignition on. Measure voltage between resistor harness connector terminal No. 1 and ground. If battery voltage is present, go to next step. If battery voltage is not present, repair harness between stoplight switch and resistor.
  4. Turn ignition off. Using an ohmmeter, measure resistance of resistor. If resistance is 780-860 ohms, go to next step. If resistance is not 780-860 ohms, replace resistor.
  5. Check for continuity to ground at resistor harness connector terminal No. 2. If continuity is present, replace ECU. If continuity is not present, repair harness.
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