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TAC Module Code 34: Power Supply Circuit For Sensor

  1. Disconnect TAC module harness connector. See Figure . Disconnect secondary throttle sensor. Check continuity between TAC module harness connector terminal No. 15 (Brown/White wire) and secondary throttle sensor connector terminal No. 3 (Brown/White wire). If continuity exists, go to next step. If continuity does not exist, repair harness and connectors.
  2. Check continuity between ECM harness connector terminal No. 129 (Black wire) and TAC module harness connector terminal No. 1 (Black wire). If continuity exists, go to next step. If continuity does not exist, repair harness and connectors.
  3. Check continuity between TAC module harness connector terminal No. 1 (Black wire) and secondary TP sensor harness connector terminal No. 1 (Black wire). If continuity exists, go to PRELIMINARY CHECK NO. 3  . If continuity does not exist, repair harness and connectors.
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