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Home >> Toyota >> 2017 >> Prius V Two >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - (Diagnostic Codes (P0E32-585 - U0424-537) & Circuit Tests) >> Hybrid Control System >> Circuit Tests >> Pattern Select Switch EV Mode Circuit [08/2015 - ] >> Procedure

Pattern Select Switch EV Mode Circuit [08/2015 - ]: Procedure

  1. ASK ABOUT VEHICLE CONDITION 
    1. Check if a buzzer sounded when attempting to enter EV mode.

      Result

      Result Proceed to
      No buzzer sounded. A
      A buzzer sounded. B

      HINT: 

      If a buzzer sounds, one or more of the EV mode entry conditions have not been met. Check that all of the EV mode entry conditions have been met before pressing the EV switch.

    B → COMPLETED 

    A: Go to next step 

  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.

    B → Refer to   10 

    A: Go to next step 

  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

      Result Proceed to
      No DTCs are output. A
      DTCs are output. B
    5. Turn the power switch off.

    B → GO TO DTC CHART 

    A: Go to next step 

  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 mode indicator lamp comes on or blinks.

      Result

      Result Proceed to
      OK A
      NG (w/o Multi-information Display) B
      NG (w/ Multi-information Display) C
    5. Turn the power switch off.

    B → Refer to   11 

    C → Refer to   14 

    A: Go to next step 

  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 mode transition availability/
      ON or OFF
      In EV mode: ON
      EV Switch EV switch condition/
      ON or OFF
      EV switch being pushed and held: ON

      Result

      Result Proceed to
      The Techstream display changes according to the EV switch operation. A
      The Techstream display does not change according to the EV switch operation. B
    5. Turn the power switch off.

    B → Refer to   6 

    A → Refer to   13 

  6. CHECK COMBINATION SWITCH ASSEMBLY (EV SWITCH) 
    1. Remove the combination switch assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY482512Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      L155-7 (S) - L155-3 (E) EV switch being pushed and held Below 1 Ω
      EV switch not pushed 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Combination Switch Assembly)
    3. Install the combination switch assembly.

    NG → Refer to   9 

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - BODY GROUND) 
    1. Disconnect connector L155 from the combination switch assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY482748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      L155-3 (E) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Combination Switch Assembly)
    3. Connect the combination switch assembly connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION SWITCH ASSEMBLY) 
    1. Disconnect connector L5 from the power management control ECU.
    2. Disconnect connector L155 from the combination switch assembly.
    3. Measure the resistance according to the value(s) in the table below.
      GTY479958Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      L5-13 (EVSW) - L155-7 (S) Always Below 1 Ω
      L5-13 (EVSW) or L155-7 (S) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to Combination Switch Assembly)
    4. Connect the combination switch assembly connector.
    5. Connect the power management control ECU connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → Refer to   12 

  9. REPLACE COMBINATION SWITCH ASSEMBLY. Refer to  COMPONENTS [08/2015 - ] 
  10. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] 
  11. REPLACE METER CIRCUIT PLATE. Refer to  COMPONENTS [08/2015 - ] 
  12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  COMPONENTS [08/2015 - ] 
  13. CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [08/2015 - ] 
  14. REPLACE COMBINATION METER SUB-ASSEMBLY. Refer to  COMPONENTS [08/2015 - ]