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Home >> Lexus >> 2008 >> ES 350 >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Park Assist / Monitoring >> Intuitive Parking Assist System >> Clearance Warning ECU Power Source Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT FUSE (ECU IG NO. 1) 
    1. Remove the ECU IG No. 1 fuse from the instrument panel junction block.
    2. Measure the resistance of the ECU IG No. 1 fuse.

      Standard resistance: Below 1 Ω 

    NG: REPLACE FUSE (ECU IG NO. 1) 

    OK: Go to next step. 

  2. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BATTERY) 
    1. Disconnect the M2 ECU connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      M2-10(IG)-Body ground Engine switch on (IG) 10 to 14 V
    Fig 1: Disconnecting M2 ECU Connector
    G05253450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step. 

  3. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      M2-21 (E) - Body ground Always Below 1 Ω
    Fig 2: Disconnecting M2 Clearance Warning ECU Connector Terminals
    G05253451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

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