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Home › Lexus › 2001 › IS 300 › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Body Control Systems › System Tests › Test No. 6: Taillight Relay Circuit

Test No. 6: Taillight Relay Circuit

  1. Check taillight relay. See TAILLIGHT RELAY  under COMPONENT TESTS. Replace taillight relay as necessary. Retest system operation. If taillight relay is okay, go to next step.
  2. Check circuits for faults between taillight relay, body control ECU and battery. See WIRING DIAGRAMS . Repair or replace as necessary.
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