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Code 8 - TDC Sensor

  1. Turn ignition off. Remove CLOCK fuse for 10 seconds to reset ECU. Start engine, and observe CHECK ENGINE light. If light is off, problem is intermittent. Test drive. and check again.
  2. If light is on, turn ignition off. Disconnect 4-wire sensor connector at distributor. Measure resistance between Orange/Blue and White/Blue wires. If reading is not 700-1000 ohms, replace pulse generator assembly. If reading is within specification, proceed to next step.
  3. Check continuity between ground and Orange/Blue wire terminal. Check continuity between ground and White/Blue wire terminal. If continuity exists, sensor is shorted to ground. Replace pulse generator assembly. If no continuity exists, proceed to next step.
  4. Reconnect sensor connector. Attach appropriate ECU Test Harness (07LAJ-PT3010A or 07999-PD6000A ) to main wire harness side only. See Figure and Figure . Using an ohmmeter, check resistance between connector C3 terminals and C4 (B13 and B14 on 2.1L). See Figure and Figure . Resistance should be 700-1000 ohms.
  5. If resistance is not within specification, repair open or short in Orange/Blue and/or White/Blue wire. If resistance is within specification, check for continuity from terminal C3 (B13 on 2.1L) to ground.
  6. If continuity exists, repair short in Orange/Blue wire between ECU terminal C3 (B13 on 2.1L) and sensor connector. If continuity does not exist, substitute a known good ECU. If condition is corrected, replace original ECU.
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