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Home >> Infiniti >> 1998 >> Q45 Base >> Repair and Diagnosis >> Brakes >> Anti-Lock - Traction Control >> Diagnosis & Testing >> Diagnostic Procedure No. 21 >> TAC Module Code 31 (Start Signal Circuit)

TAC Module Code 31 (Start Signal Circuit)

  1. Check fuse No. 34 (7.5-amp) located in junction block fuse box. If fuse is open, replace fuse. If fuse blows, locate and repair short to ground. See WIRING DIAGRAMS . If fuse is okay, go to next step.
  2. Disconnect TAC module connectors. Check terminals for damage or loose connections. Reconnect TAC module connectors. Repeat ABS/TCS self-diagnostic procedure. While observing dash warning indicators, turn ignition on. If SLIP and TCS OFF indicators illuminate during bulb check, system is okay. If SLIP and TCS OFF indicators do not illuminate during bulb check, go to next step.
  3. Turn ignition off. Disconnect TAC module and PCM harness connectors. Check continuity between TAC module 16-pin connector terminal No. 110 and PCM harness terminal No. 80. See Figure. If continuity exists, repair harness as necessary. If continuity does not exist, go to next step.
  4. Reconnect PCM harness connector. Turn ignition on. Check for voltage between TAC module 16-pin connector terminal No. 110 and ground. If reading indicates about 12 volts, system is okay at this time. If about 12 volts does not exist, repair Sky Blue wire between TAC module 16-pin connector terminal No. 110 and junction block fuse box fuse No. 34 (7.5-amp). See WIRING DIAGRAMS .
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