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Home >> Lexus >> 1998 >> GS 400 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control System >> Circuit Tests >> Driver Seat Belt Buckle Switch Circuit
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Driver Seat Belt Buckle 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 Driver Seat Belt Buckle Switch Using Scan Tool

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

  2. Check Driver Seat Belt Buckle Switch

    Check driver seat belt buckle switch. See DRIVER SEAT BELT BUCKLE SWITCH under COMPONENT TESTS. If driver seat belt buckle switch is okay, go to next step. Replace driver seat belt buckle switch as necessary. Retest system operation.

  3. Check Circuits

    Check circuits for faults between driver seat belt buckle switch and body control ECU No. 2. 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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