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Home >> Lexus >> 2012 >> HS 250h >> Repair and Diagnosis (Single Page) >> Steering >> Steering Column >> Power Tilt & Telescopic Steering Column (Diagnostic Codes & Circuit Tests) >> Power Tilt And Power Telescopic Steering Column System >> Circuit Tests >> IG Power Source Circuit >> Procedure

IG Power Source Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BATTERY) 
    1. Disconnect the F109 multiplex tilt and telescopic ECU connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      F109-8 (IG) - Body ground Power switch on (IG) 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F109-11 (GND) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   3 

  3. REPLACE MULTIPLEX TILT AND TELESCOPIC ECU. Refer to  REMOVAL