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Home >> Lexus >> 2006 >> LS 430 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Wireless Door Lock Control System - Diagnostics >> Wireless Door Lock Control System (W/Smart Key System) >> Wireless Door Lock Tuner Circuit >> Inspect Procedure

Inspect Procedure

  1. CHECK FOR DTCS 
    1. Connect the hand-held tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON.
    3. Check that DTC B1242 is not output.

    OK: DTC B1242 is not output. 

    NG: Go to  DTC B1242 WIRELESS DOOR LOCK TUNER CIRCUIT MALFUNCTION  

    OK: GO TO NEXT STEP 

  2. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS (See  ON-VEHICLE INSPECTION   ) 
    RESULT DESCRIPTION

    Result Proceed to
    Wireless door lock control functions (power door LOCK/UNLOCK, power window OPEN and remote panic functions) cannot operate. A
    Wireless door lock control function (luggage compartment door open function) cannot operate. B

    NG: Go to step   4 

    A: GO TO NEXT STEP 

  3. CHECK WIRE HARNESS (DOOR CONTROL RECEIVER (INNER MIRROR) - THEFT WARNING ECU ASSY AND BODY GROUND) 
    1. Disconnect the I19 receiver connector.
    2. Disconnect the T5 ECU connector.
    3. Measure the voltage and resistance of the wire harness side connectors.

    Standard: 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Specified Condition
    I19-7 (DATA) - T5-29 (RDA) Below 1 Ω
    I19-6 (RSSI) - T5-30 (RSSI) Below 1 Ω
    I19-8 (+5) - T5-15 (RCO1) Below 1 Ω
    I19-5 (E1) - Body ground Below 1 Ω
    I19-7 (DATA) or T5-29 (RDA) - Body ground 10 kΩ or higher
    I19-6 (RSS1) or T5-29 (RSS1) - Body ground 10 kΩ or higher
    I19-8 (+5) or T5-15 (RCO1) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 1: Identifying Door Control Receiver Terminals
    G03001371Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  4. CHECK WIRE HARNESS (DOOR CONTROL RECEIVER (LUGGAGE) - THEFT WARNING ECU ASSY AND BODY GROUND) 
    1. Disconnect the D30 receiver connector.
    2. Disconnect the T5 ECU connector.
    3. Measure the voltage and resistance of the wire harness side connectors.

    Standard: 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Specified Condition
    D30-4 (DATA) - T5-32 (RDA2) Below 1 Ω
    D30-2 (RSS1) - T5-12 (RSS2) Below 1 Ω
    D30-1 (+5) - T5-34 (RCO2) Below 1 Ω
    D30-3 (GND) - Body ground Below 1 Ω
    D30-4 (DATA) or T5-32 (RDA2) - Body ground 10 kΩ or higher
    D30-2 (RSS1) or T5-12 (RSS2) - Body ground 10 kΩ or higher
    D30-1 (+5) or T5-34 (RCO2) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 2: Identifying Door Control Receiver Terminals
    G03001372Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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