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Home >> Toyota >> 2017 >> Prius Three >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (9 Of 9) & Circuit Tests >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> Drive Mode Select Switch Circuit [11/2015 - ] >> Procedure

Drive Mode Select Switch Circuit [11/2015 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (CAN BUS CHECK) 

    See step  2

    Result

    Proceed to
    A
    B

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - 12/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2018 - ] 

    Result: 

    A 

    See step  2

  2. CHECK DTC OUTPUT (HEALTH CHECK) 

    See step  3

    Result

    Proceed to
    A
    B

    Result: 

    B 

    GO TO  DTC INDEX 

    Result: 

    A 

    See step  3

  3. CHECK DRIVE MODE STATUS (NORMAL MODE, ECO MODE, POWER MODE) 
    1. Turn the power switch on (IG).
    2. Operate the drive mode select switch (pattern select switch assembly) to change the drive mode.
    3. Check that the drive mode indicator is displayed on the multi-information display and changes according to the selected drive mode.

      Result

      Result Proceed to
      The display changes according to the drive mode select switch (pattern select switch assembly) operation. A
      The display does not change according to the drive mode select switch (pattern select switch assembly) operation. B
    4. Turn the power switch off.

    Result: 

    A 

    GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2015 - 11/2017]  , or refer to  PROBLEM SYMPTOMS TABLE [11/2017 - 12/2018]  , or refer to  PROBLEM SYMPTOMS TABLE [12/2018 - ] 

    Result: 

    B 

    See step  4

  4. READ VALUE USING TECHSTREAM (POWERTRAIN DRIVE MODE SWITCH) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Hybrid Control / Data List / Powertrain Drive Mode Switch.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Powertrain Drive Mode Switch
    5. Read the value displayed on the Techstream.

      Powertrain > Hybrid Control 

      Tester Display Measurement Item Range Normal Condition
      Powertrain Drive Mode Switch Drive mode select switch (pattern select switch assembly) condition ON or OFF Drive mode select switch (pattern select switch assembly) not operated: OFF
      Drive mode select switch (pattern select switch assembly) being pushed and held: ON

      Result

      Result Proceed to
      The display changes according to the drive mode select switch (pattern select switch assembly) operation. A
      The display does not change according to the drive mode select switch (pattern select switch assembly) operation. B
    6. Turn the power switch off.

    Result: 

    A 

    CHECK METER / GAUGE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] 

    Result: 

    B 

    See step  5

  5. INSPECT DRIVE MODE SELECT SWITCH (PATTERN SELECT SWITCH ASSEMBLY) 
    1. Remove the drive mode select switch (pattern select switch assembly).

      Refer to REMOVAL [11/2015 - ]

    2. Measure the resistance according to the value(s) in the table below.
      GTY550202Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Drive Mode Select Switch (Pattern Select Switch Assembly))

      Standard Resistance

      (F44)

      (F44)

      Tester Connection Condition Specified Condition
      F44-3 (DRV) - F44-9 (E) Drive mode select switch (pattern select switch assembly) being pushed and held Below 50 Ω
      Drive mode select switch (pattern select switch assembly) not pushed 10 kΩ or higher
    3. Install the drive mode select switch (pattern select switch assembly).

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE DRIVE MODE SELECT SWITCH (PATTERN SELECT SWITCH ASSEMBLY). Refer to  REMOVAL [11/2015 - ] 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (DRIVE MODE SELECT SWITCH (PATTERN SELECT SWITCH ASSEMBLY) - BODY GROUND) 
    1. Disconnect the F44 drive mode select switch (pattern select switch assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY556303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Drive Mode Select Switch (Pattern Select Switch Assembly))

      Standard Resistance

      (F44)

      (F44)

      Tester Connection Condition Specified Condition
      F44-9 (E) - Body ground Always Below 1 Ω
    3. Reconnect the F44 drive mode select switch (pattern select switch assembly) connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - DRIVE MODE SELECT SWITCH (PATTERN SELECT SWITCH ASSEMBLY)) 
    1. Disconnect the F3 hybrid vehicle control ECU connector.
    2. Disconnect the F44 drive mode select switch (pattern select switch assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY591271Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU)
      *b Front view of wire harness connector
      (to Drive Mode Select Switch (Pattern Select Switch Assembly))

      Standard Resistance

      (F3, F44)

      (F3)

      (F44)

      Tester Connection Condition Specified Condition
      F3-37 (PDRV) - F44-3 (DRV) Always Below 1 Ω
      F3-37 (PDRV) or F44-3 (DRV) - Body ground Always 10 kΩ or higher
    4. Reconnect the F44 drive mode select switch (pattern select switch assembly) connector.
    5. Reconnect the F3 hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2015 - 12/2018]  , or refer to  REMOVAL [12/2018 - 08/2019]  , or refer to  REMOVAL [08/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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