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Models Without Multi-Remote Control System

  1. Check Key Switch Input Signal

    Turn ignition off. Ensure Time Control Unit (TCU) connectors are connected. Measure voltage between ground and terminal No. 11 (Blue/White wire) at TCU harness connector (backprobe connector). Battery voltage should be present with key inserted in ignition switch, and zero volts with key removed. If voltage is as specified, key switch (insert) is okay. If voltage is not as specified, go to next step.

  2. Check Key Switch

    Check for continuity between key switch terminals. Continuity should exist when key is inserted in ignition switch and not exist when key is removed. Replace key switch if continuity is not as specified. If continuity is as specified, check fuse No. 12 (10-amp). Check for open or short in wiring harness between key switch and fuse No. 12. Check for open or short in wiring harness between key switch and TCU. See WIRING DIAGRAMS  .
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