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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (8 Of 8) - Symptom & Circuit Tests - (Hybrid) >> Hybrid Control System >> Circuit Tests >> Pattern Select Switch EV Mode Circuit [10/2014 - 10/2015] >> Procedure

Pattern Select Switch EV Mode Circuit [10/2014 - 10/2015]: Procedure

  1. ASK ABOUT VEHICLE CONDITION 
    1. Check if a buzzer sounded and a message was displayed on the multi-information display when attempting to enter EV drive mode.

      Result

      Result Proceed to
      No buzzer sounded and no message was displayed on multi-information display. A
      A buzzer sounded and a message was displayed on multi-information display. B

      HINT: 

      If a buzzer sounds and a message is displayed on the multi-information display, one or more of the EV drive mode entry conditions have not been met. Check that all of the EV drive mode entry conditions have been met before pressing the EV drive mode switch (combination switch assembly).

    Result: 

    B 

    END 

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (CAN BUS CHECK) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: System Select / CAN Bus Check.

      Result

      Result Proceed to
      All of the ECUs and sensors that are currently connected to the CAN communication system are displayed. A
      None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed. B
    4. Turn the power switch off.

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] )

    Result: 

    A 

    See step  3

  3. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: System Select / Health Check.
    4. Check DTCs.
      Result Proceed to
      No DTCs are output. A
      DTCs are output. B
    5. Turn the power switch off.

    Result: 

    B 

    GO TO APPLICABLE DTC CHART 

    Result: 

    A 

    See step  4

  4. PERFORM ACTIVE TEST USING TECHSTREAM (INDICAT. EV MODE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Enter the following menus: Body Electrical / Combination Meter / Active Test / Indicat. EV Mode.
    4. Perform the "Indicat. EV Mode" Active Test.

      OK

      The EV drive mode indicator light comes on or blinks.

    5. Turn the power switch off.

    Result: 

    NG 

    REPLACE COMBINATION METER ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    Result: 

    OK 

    See step  5

  5. READ VALUE USING TECHSTREAM (EV REQUEST, EV SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / EV request, EV Switch.
    4. Read the value displayed on the Techstream.
      Tester Display Measurement Item/Range Normal Condition
      EV request EV drive mode transition availability/
      ON or OFF      		 In EV drive mode: ON
      EV Switch EV drive mode switch (combination switch assembly) condition/
      ON or OFF      		 EV drive mode switch (combination switch assembly) being pushed and held: ON

      Result

      Result Proceed to
      The Techstream display changes according to the EV drive mode switch (combination switch assembly) operation. A
      The Techstream display does not change according to the EV drive mode switch (combination switch assembly) operation. B
    5. Turn the power switch off.

    Result: 

    A 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2014 - ] )

    Result: 

    B 

    See step  6

  6. INSPECT EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY) 
    1. Remove the EV drive mode switch (combination switch assembly) (Refer to COMPONENTS [10/2014 - ] ).
    2. Measure the resistance according to the value(s) in the table below.
      GTY361429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (EV Drive Mode Switch (Combination Switch Assembly))

      Standard Resistance

      Tester Connection Condition Specified Condition
      8 (S) - 3 (E) EV drive mode switch (combination switch assembly) being pushed and held Below 1 Ω
      EV drive mode switch (combination switch assembly) not pushed 10 kΩ or higher
    3. Install the EV drive mode switch (combination switch assembly).

    Result: 

    NG 

    REPLACE EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY) 

    (Refer to COMPONENTS [10/2014 - ] )

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND) 
    1. Disconnect the D107 EV drive mode switch (combination switch assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY549790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to EV Drive Mode Switch (Combination Switch Assembly))

      Standard Resistance

      Tester Connection Condition Specified Condition
      D107-3 (E) - Body ground Always Below 1 Ω
    3. Reconnect the D107 EV drive mode switch (combination switch assembly) connector.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY)) 
    1. Disconnect the D104 power management control ECU connector.
    2. Disconnect the D107 EV drive mode switch (combination switch assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY543936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to EV Drive Mode Switch (Combination Switch Assembly))

      Standard Resistance

      Tester Connection Condition Specified Condition
      D104-13 (EVSW) - D107-8 (S) Always Below 1 Ω
      D104-13 (EVSW) or D107-8 (S) - Body ground Always 10 kΩ or higher
    4. Reconnect the D107 EV drive mode switch (combination switch assembly) connector.
    5. Reconnect the D104 power management control ECU connector.

    Result: 

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (Refer to COMPONENTS [10/2014 - 10/2015] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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