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Test No. 5: Hazard 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. Using scan tool, operate hazard switch in ACTIVE TEST. If hazard switch does not operate, go to next step. If hazard switch operates, switch is okay at this time.
  2. Check hazard switch. See WIRING DIAGRAMS . Retest system operation. If hazard switch is okay, go to next step.
  3. Check circuits for faults between hazard switch and body control ECU. See WIRING DIAGRAMS . Repair or replace as necessary.
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