Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System (Diagnostic Codes & Circuit Tests) >> Dynamic Radar Cruise Control System >> Distance Control ECU Power Source Circuit >> Procedure

Distance Control ECU Power Source Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (DISTANCE CONTROL ECU - BATTERY AND BODY GROUND) 
    Fig 1: Identifying K13 ECU Connector Terminals
    GTY137814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the K13 ECU connector.
    2. Measure the voltage of the wire harness side connector.

      Standard voltage

      Tester Connection Condition Specified Condition
      K13-1 (B) - Body ground Power switch ON (IG) 10 to 14 V
    3. Measure the resistance of the wire harness side connector.

      Standard resistance

      Tester Connection Specified Condition
      K13-10 (SGND) - Body ground Below 1 Ω
      K13-12 (GND) - Body ground Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE