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Home >> Lexus >> 1998 >> LS 400 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control System >> Circuit Tests >> Engine Hood Courtesy Switch Circuit
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Engine Hood Courtesy 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 Engine Hood Courtesy Switch Using Scan Tool

    Using scan tool, check engine hood courtesy switch using DATA LIST. If engine hood courtesy switch is not okay, go to next step. If engine hood courtesy switch is okay, go to next test listed in appropriate TROUBLE SHOOTING SYMPTOMS table.

  2. Check Engine Hood Courtesy Switch

    Check engine hood courtesy switch. See ENGINE HOOD COURTESY SWITCH under COMPONENT TESTS. If switch is okay, go to next step. Replace engine hood courtesy switch as necessary. Retest system operation.

  3. Check Circuits

    Check circuits for faults between engine hood courtesy switch and body control ECU No. 1. 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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