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Door Mirror Foot Light Circuit [08/2015 - 08/2017]: Procedure

  1. PERFORM ACTIVE TEST USING TECHSTREAM (FOOT LIGHT) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Mirror ECU / Active Test / Foot Light.
    5. Check that the Puddle light turns on/off.
      MIRROR ECU

      Tester Display Test Part Control Range Diagnostic Note
      Foot Light Puddle light ON or OFF -

      OK

      Puddle light turns on/off.

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  2

  2. CHECK CAN COMMUNICATION SYSTEM 
    1. Check for CAN communication system DTCs output.

      OK

      CAN communication system DTCs are not output.

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2017] )

    Result: 

    OK 

    See step  3

  3. CHECK VEHICLE CONDITION 
    1. Identify the control system where the problem occurs.
      RESULT

      Result Proceed to
      All of the following apply A
      When changing the shift position B
      When operating the ignition switch C
      When opening or closing a door D
      When operating a door lock E

    Result: 

    A 

    REPLACE OUTER MIRROR CONTROL ECU 

    (Refer to PROCEDURE - Step 16 )

    Result: 

    C 

    See step  5

    Result: 

    D 

    See step  7

    Result: 

    E 

    See step  8

    Result: 

    B 

    See step  4

  4. READ VALUE USING TECHSTREAM (SHIFT SW STATUS (P RANGE)) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Shift SW Status (P Range)
    5. According to the display on the Techstream, read the Data List.
      ENGINE AND ECT

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Shift SW Status (P Range) PNP switch status/
      ON or OFF      		 Shift lever is:
      • In P: ON
      • Not in P: OFF
      		 When shift lever position displayed on Techstream differs from actual position, adjustment of PNP switch or shift cable may be incorrect

      OK

      The Techstream display changes normally when shift lever is moved.

      RESULT

      Result Proceed to
      OK A
      NG (for two wheel drive model) B
      NG (for four wheel drive model) C

    Result: 

    A 

    REPLACE OUTER MIRROR CONTROL ECU 

    (Refer to PROCEDURE - Step 16 )

    Result: 

    B 

    GO TO FLOW CHART (PARK/NEUTRAL POSITION SWITCH CIRCUIT) 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

    Result: 

    C 

    GO TO FLOW CHART (PARK/NEUTRAL POSITION SWITCH CIRCUIT) 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

  5. READ VALUE USING TECHSTREAM (IG SW) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List / IG SW.
    5. According to the display on the Techstream, read the Data List.
      MAIN BODY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      IG SW Ignition switch status/
      ON or OFF      		 Ignition switch is:
      • On: ON
      • Not on ON: OFF
      		 -

      OK

      The Techstream display changes normally when ignition switch is operated.

    Result: 

    OK 

    REPLACE OUTER MIRROR CONTROL ECU 

    (Refer to PROCEDURE - Step 16 )

    Result: 

    NG 

    See step  6

  6. INSPECT FUSE (ECU-IG NO. 2) 
    1. Remove the ECU-IG No. 2 fuse from the main Body ECU.
      GTY567340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      ECU-IG No. 2 fuse Always Below 1 Ω
    3. Reinstall the ECU-IG No. 2 fuse.

    Result: 

    OK 

    REPLACE MAIN BODY ECU 

    Result: 

    NG 

    REPLACE FUSE 

  7. READ VALUE USING TECHSTREAM (COURTESY SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List.
    5. According to the display on the Techstream, read the Data List.
      MAIN BODY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door Courtesy SW Front door courtesy light switch LH signal / ON or OFF ON: Front door courtesy light switch LH ON
      OFF: Front door courtesy light switch LH OFF      		 -
      P Door Courtesy SW Front door courtesy light switch RH signal / ON or OFF ON: Front door courtesy light switch RH ON
      OFF: Front door courtesy light switch RH OFF      		 -

      OK

      The Techstream display changes normally when door courtesy light switch is operated.

    Result: 

    OK 

    REPLACE OUTER MIRROR CONTROL ECU 

    (Refer to PROCEDURE - Step 16 )

    Result: 

    NG 

    GO TO DOOR COURTESY SWITCH CIRCUIT 

    (Refer to Door Courtesy Switch Circuit [08/2015 - 08/2017] )

  8. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Main Body / Data List / D-Door Lock Pos SW.
    5. According to the display on the Techstream, read the Data List.
      MAIN BODY

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D-Door Lock Pos SW Front door lock switch signal / ON or OFF ON: Front door lock switch ON
      OFF: Front door lock switch OFF      		 -

      OK

      The Techstream display changes normally when door lock switch is operated.

    Result: 

    OK 

    REPLACE OUTER MIRROR CONTROL ECU 

    (Refer to PROCEDURE - Step 16 )

    Result: 

    NG 

    GO TO POWER DOOR LOCK CONTROL SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2017] )

  9. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR - MIRROR ECU, BODY GROUND) 
    GTY552224Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. for LH:
      1. Disconnect the M5 outer rear view mirror assembly LH connector.
      2. Disconnect the M8 mirror control ECU connector.
      3. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        M5-6 (LP+) - M8-17 (LP) Always Below 1 Ω
        M5-5 (LP-) - Body Ground Always Below 1 Ω
        M5-6 (LP+) - Body Ground Always 10 kΩ or higher
      4. Reconnect the mirror control ECU connector.
      5. Reconnect the outer rear view mirror assembly LH connector.
    2. for RH:
      1. Disconnect the L6 outer rear view mirror assembly RH connector.
      2. Disconnect the M8 mirror control ECU connector.
      3. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        L6-6 (LP+) - M8-37 (LP) Always Below 1 Ω
        L6-5 (LP-) - Body Ground Always Below 1 Ω
        L6-6 (LP+) - Body Ground Always 10 kΩ or higher
      4. Reconnect the mirror control ECU connector.
      5. Reconnect the outer rear view mirror assembly RH connector.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  10

  10. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY 
    1. Remove the outer rear view mirror assembly (Refer to REMOVAL [08/2015 - ] ).
      GTY227444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply battery voltage to the terminals and check that the puddle light turn on.

      OK

      Measurement Connection Specified Condition
      Positive battery (+) → 6 (LP+)
      Negative battery (-) → 5 (LP-)      		 Puddle light turn on.
    3. Reinstall the outer rear view mirror assembly.

    Result: 

    OK 

    REPLACE OUTER MIRROR CONTROL ECU 

    (Refer to PROCEDURE - Step 16 )

    Result: 

    NG 

    See step  11

  11. INSPECT PUDDLE LIGHT 
    1. Temporarily replace the puddle light bulb with a new or normally functioning one (Refer to REMOVAL [08/2015 - ] ).
    2. Check that the puddle light turn on.

      OK

      Puddle light turn on.

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY 

    (Refer to REMOVAL [08/2015 - ] )

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