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Brake Fluid Level Warning 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, check brake fluid level warning switch using DATA LIST. If brake fluid level warning switch is faulty, go to next step. If brake fluid level warning switch is okay, go to next test listed in appropriate SYMPTOM DIAGNOSIS table under TROUBLE SHOOTING .
  2. Check brake fluid level warning switch. See BRAKE FLUID LEVEL WARNING SWITCH  under COMPONENT TESTS. Replace brake fluid level warning switch as necessary. Retest system operation. If brake fluid level warning switch is okay, go to next step.
  3. Check circuits for faults between brake fluid level warning 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 SYMPTOM DIAGNOSIS table under TROUBLE SHOOTING .
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