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Inspection Procedure

NOTE: If not using the hand-held tester, start the inspection from step  2.
  1. Connect the hand-held tester to the DLC3. See Figure. Check the headlight control switch using DATA LIST. See INSPECTING LIGHT CONTROL SWITCH DATA LIST  table. If the results are OK, proceed to the next circuit inspection of the symptom. See PROBLEM SYMPTOM INDEX  table. If the results are not good, go to the next step.
    INSPECTING LIGHT CONTROL SWITCH DATA LIST

    Switch Position, Terminal (Tester Display) Condition
    OFF
    Headlight Switch (Tail) OFF
    Headlight Switch (Head) OFF
    Auto Light Switch OFF
    TAIL
    Headlight Switch (Tail) ON
    Headlight Switch (Head) OFF
    Auto Light Switch OFF
    HEAD
    Headlight Switch (Tail) ON
    Headlight Switch (Head) ON
    Auto Light Switch OFF
    AUTO
    Headlight Switch (Tail) OFF
    Headlight Switch (Head) OFF
    Auto Light Switch ON
  2. Check the headlight control switch. See STEERING COLUMN SWITCHES article in ACCESSORIES & EQUIPMENT. If the results are OK, go to the next step. If the results are not good, replace the headlight control switch. See STEERING COLUMN SWITCHES article in ACCESSORIES & EQUIPMENT.
  3. Check the wiring harness and connector between the headlight control switch and the body ECU. If the results are OK, proceed to the next circuit inspection of the symptom. See PROBLEM SYMPTOM INDEX  table. If the results are not good, repair or replace the wiring harness or connector.
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