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Home >> Toyota >> 2009 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Key Reminder Warning System >> Key Reminder Buzzer does not Sound >> Inspection Procedure

Inspection Procedure

  1. READ VALUE USING TECHSTREAM (FRONT DOOR COURTESY LIGHT SWITCH) 
    1. Check the Data List to ensure proper operation of the front door courtesy light switch.

    Main Body 

    DATA LIST

    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    D Door Courtesy SW Driver side door courtesy switch signal / ON or OFF ON: Driver side door is open
    OFF: Driver side door is closed    		 -

    OK: "ON" (driver door is open) appears on the screen. 

    NG: Go to step  5

    OK: Go to next step 

  2. READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH) 
    1. Check the Data List to ensure proper operation of the door unlock warning switch.

    Main Body 

    DATA LIST

    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    Key Unlock Warning SW Unlock warning switch signal / ON or OFF ON: Key is in ignition key cylinder
    OFF: No key is in ignition key cylinder    		 -

    OK: "ON" (key is in ignition key cylinder) appears on the screen. 

    OK: REPLACE COMBINATION METER ASSEMBLY 

    NG: Go to next step 

  3. INSPECT UNLOCK WARNING SWITCH ASSEMBLY 
    1. Remove the unlock warning switch.
    2. Measure the resistance of the switch.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Condition Specified Condition
    1 - 2 Not pushed 10 kΩ or higher
    1 - 2 Pushed Below 1 Ω

    NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY 

    Fig 1: Checking Unlock Warning Switch Assembly Operation
    G05586150Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  4. CHECK WIRE HARNESS (UNLOCK WARNING SWITCH - MAIN BODY ECU) 
    1. Disconnect the E6 switch connector.
    2. Disconnect the IE junction block connector.
    3. Measure the resistance between the wire harness side connectors.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Condition Specified Condition
    E6-1 - IE-26 (KSW) Always Below 1 Ω
    E6-2 - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 2: Identifying Main Body ECU And Unlock Warning Switch Connector Terminals
    G05586151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

  5. INSPECT FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side) 
    1. Remove the courtesy light switch.
    2. Measure the resistance of the switch.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Condition Specified Condition
    1 - Body ground Not pushed (ON) Below 1 Ω
    1 - Body ground Pushed (OFF) 10 kΩ or higher

    NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH (for Driver Side) 

    Fig 3: Checking Front Door Courtesy Light Switch Operation
    G04833360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  6. CHECK WIRE HARNESS AND CONNECTORS (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU) 
    1. Disconnect the K7 connector.
    2. Disconnect the IA junction block connector.
    3. Measure the resistance between the wire harness side connectors.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Condition Specified Condition
    K7-1 - IA-21 (DCTY) Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 4: Identifying Main Body ECU And Front Door Courtesy Light Switch Connector Terminals
    G05586153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 

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