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Test No. 13: Automatic Turn Off System Does Not Operate

NOTE: Automatic turn off system turns off the lights after 30 seconds when all doors and trunk are closed with ignition in ACC or LOCK position with headlight control switch turned to position No. 2, or after 20 minutes when door or trunk is open. Position No. 2 turns on the headlights along with park lights, side marker lights, taillights and instrument panel lights. Lights will automatically turn off when driver's door is opened with headlight control switch in position No. 1. Position No. 1 turns on the park lights along with taillights, side marker lights and instrument panel lights. If doors are locked with keyless remote transmitter, lights will turn off immediately.
  1. Open driver's door and check that door courtesy light comes on when door is opened and goes off when door is closed. If door courtesy light does not operate properly when door is open and closed, go to next step. If door courtesy light operates properly when driver's door is open and closed, go to step  4.
  2. Check door courtesy switch. See DOOR COURTESY SWITCH  under COMPONENT TESTS. If door courtesy switch is okay, go to next step. If door courtesy switch is defective, replace door courtesy switch and recheck automatic turn off system operation.
  3. Check wiring harness and electrical connectors between driver's door courtesy switch and body Electronic Control Unit (ECU). See WIRING DIAGRAMS . It may be necessary to check wiring between door courtesy light on driver's door and driver's door ECU. For additional wiring for interior lighting, see WIRING DIAGRAMS in ILLUMINATION/INTERIOR LIGHTS article. Body ECU is located at driver's side of instrument panel on the fuse/relay box. See Figure. Electrical connector B4 (25-pin) and electrical connector B5 (25-pin) are located at each side of body ECU and a 12-pin electrical connector at rear of body ECU. See Figure. Driver's door ECU is located on driver's door and is incorporated into the power window switch assembly. See Figure.
  4. Check driver door control system for trouble symptoms. See TROUBLE SHOOTING PROCEDURE (DRIVER DOOR CONTROL SYSTEM)  under TROUBLE SHOOTING. If no trouble symptoms exist, go to next step. If any trouble symptoms exist, perform specified test for trouble symptom.
  5. Check body ECU for proper voltage and input signals. See BODY ELECTRONIC CONTROL UNIT  under PIN VOLTAGE TESTS. If proper voltage and input signals exist, go to next step. If proper voltage or input signal does not exist, repair as necessary and recheck automatic turn off system operation.
  6. Replace body ECU with a known-good body ECU and recheck automatic turn off system operation. If automatic turn off system operates properly, original body ECU was defective. If automatic turn off system still does not operate properly, check wiring harness and electrical connectors for body ECU for an intermittent problem. Repair wiring harness or electrical connector as necessary.
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