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Home >> Lexus >> 1998 >> LX 470 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System >> System Tests >> Test No. 11

Test No. 11

  1. Check Door Unlock Detection Switch Operation

    Check door unlock detection switch operation. See DOOR UNLOCK DETECTION SWITCH  under COMPONENT TESTS. If door unlock detection switch operates properly, go to next step. If door unlock detection switch is defective, replace door unlock detection switch.

  2. Check Door Unlock Detection Switch Wiring

    Check for defective connectors and appropriate wire between anti-theft system Electronic Control Unit (ECU) and appropriate door unlock detection switch, and defective connectors and White/Black wire between body ground and appropriate door unlock detection switch. Refer to WIRING DIAGRAMS . Anti-theft system ECU is located near passenger's side of instrument panel, behind glove box and uses a 12-pin electrical connector and a 22-pin electrical connector. See Figure.
  3. If connectors and wiring are okay, replace anti-theft system ECU. See ANTI-THEFT SYSTEM ECU  under REMOVAL & INSTALLATION. Check system operation. If anti-theft system still cannot be set, go to next test listed. See TROUBLE SHOOTING SYMPTOMS  under TROUBLE SHOOTING. If connectors or wiring are defective, repair as necessary.
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