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Home >> Lexus >> 2000 >> LX 470 >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System/Vehicle Skid Control >> Troubleshooting >> VSC Off Indicator Light >> Diagnostic Procedure
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Diagnostic Procedure

  1. Turn ignition on. Observe VSC OFF indicator light. If VSC OFF indicator light illuminates, go to next step. If VSC OFF indicator light does not illuminate, go to step  3.
  2. Perform ABS self-diagnostics. See RETRIEVING DIAGNOSTIC TROUBLE CODES . If a VSC related DTC is present, repair affected DTC(s). If no VSC related DTC is set, go to next step.
  3. Check if other warning lights are illuminated. If other warning lights are illuminated, go to step  5. If other warning lights are not illuminated, go to next step.
  4. Turn ignition off. Remove IG1 No. 1 relay from underhood relay box. Check continuity between specified relay terminals. See Figure. See IG1 NO. 1 RELAY CONTINUITY  table. Replace relay. If relay is okay, go to next step.
  5. Check circuit between IG1 No. 1 relay and combination meter. See WIRING DIAGRAMS . Repair as necessary. If circuit okay, go to next step.
  6. Check VSC OFF indicator light circuit or for faulty combination meter. Repair circuit or replace combination meter. If circuit or combination meter is okay, go to next step.
  7. Check circuit between VSC OFF indicator light and ABS/BA/TRAC/VSC ECU. Repair as necessary. If circuit is okay, replace ABS/BA/TRAC/VSC ECU.
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