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TRAC Off Indicator Light & Switch Circuit

  1. Check for traction control DTC. See SELF-DIAGNOSTICS. If no DTC exist, go to next step. If any DTC exist, diagnose and repair DTC first.
  2. Remove TRAC OFF switch. Disconnect switch connector. Check continuity between switch terminals No. 4 and 6. Continuity should exist with switch pushed in. Continuity should not exist with switch released. If switch is okay, go to next step. Replace switch if continuity is not as specified.
  3. Check for open or short on Light Green wire between throttle control ECU connector T16 terminal No. 6 and TRAC OFF switch terminal No. 4. Check for open or short on White/Black wire between TRAC OFF switch terminal No. 6 and ground. See appropriate wiring diagram under WIRING DIAGRAMS. Repair if necessary. If no problems are found, go to next step.
  4. Check TRAC OFF indicator light. See INSTRUMENT PANEL article in ACCESSORIES/SAFETY EQUIPMENT section. Repair if necessary. If no problems are found, go to next step.
  5. Check for open or short in Light Green/Red wire between TRAC OFF indicator light and throttle control ECU connector T16 terminal No. 10. See appropriate wiring diagram under WIRING DIAGRAMS. Repair if necessary. If no problems are found, check throttle control ECU. See THROTTLE CONTROL ECU PIN VOLTAGE TESTS under PIN VOLTAGE . Replace ECU if necessary.
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