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Driver Door Unlock Detection Switch Circuit

NOTE: If LEXUS scan tool is available, start test from step 1). If this scan tool is not available, start test from step 2).

  1. Check Door Unlock Detection Switch Using Scan Tool

    Using scan tool, check driver door unlock detection switch using DATA LIST. If door unlock detection switch is not okay, go to next step. If door unlock detection switch is okay, go to next test listed in appropriate TROUBLE SHOOTING SYMPTOMS table.

  2. Check Door Unlock Detection Switch

    Check driver door unlock detection switch. See DOOR UNLOCK DETECTION SWITCH under COMPONENT TESTS. If switch is okay, go to next step. Replace door unlock detection switch (motor assembly) as necessary. Retest system operation.

  3. Check Circuits

    Check circuits for faults between driver door unlock detection switch and driver door ECU. See WIRING DIAGRAMS. Repair or replace as necessary. If circuits are okay, go to next test listed in appropriate TROUBLE SHOOTING SYMPTOMS table.
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