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Home › Toyota › 2002 › 4Runner Base › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Body Control Systems - Diagnostics › Circuit Inspection › Taillight Relay Circuit › Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR BETWEEN TAILLIGHT RELAY (MARKING: TAIL) AND BODY ECU  . 
    1. NG Repair or replace harness or connector. 
    2. OK Check and replace body ECU. 
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