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Home >> Lexus >> 2006 >> LS 430 >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> Power Mirror Control System (W/ Memory) - Diagnostics >> Power Source Circuit (Front Passenger Door Ecu) >> Inspection Procedure

Inspection Procedure

  1. INSPECT FUSE (MPX-B1, MPX-IG, P DOOR, D/C CUT) 
    1. Remove the MPX-IG fuse from the driver side J/B.
    2. Remove the P DOOR and MPX-B1 fuses from the passenger side J/B.
    3. Remove the D/C CUT fuse from the FL block.
    4. Measure the resistance of the fuse.

    Standard: Below 1 Ω 

    NG: REPLACE FUSE 

    OK: GO TO NEXT STEP 

  2. INSPECT RELAY (Making: D-IG1) 
    1. Remove the D-IG1 relay from the driver side J/B.
    2. Measure the resistance of the relay.

    Standard 

    RELAY RESISTANCE SPECIFICATIONS

    Tester Connection Specified Condition
    3-5 10 kΩ or higher
    3-5 Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

    NG: REPLACE RELAY 

    Fig 1: Inspecting Relay (D-IG1)
    G03000855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  3. CHECK WIRE HARNESS (FRONT PASSENGER DOOR ECU - BATTERY AND BODY GROUND) 
    1. Disconnect the F17 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.

    Standard 

    F17 ECU CONNECTOR VOLTAGE AND RESISTANCE SPECIFICATIONS

    Tester Connection Condition Specified Condition
    F17-4 (CPUB) - Body ground Always 10 to 14 V
    F17-6 (BDR) - Body ground Always 10 to 14 V
    F17-5 (SIG) - Body ground Ignition switch OFF --> ON 0 V --> 10 to 14 V
    F17-1 (GND) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 2: Identifying F17 ECU Connector Terminals
    G03000856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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