ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:C2304, C2305, C2306

DTC Code DTC Name
C2304 Open or Short Circuit in U Phase
C2305 Open or Short Circuit in V Phase
C2306 Open or Short Circuit in W Phase

DESCRIPTION

The shift control actuator assembly consists of a parking lock motor and rotation angle sensor. The transmission control ECU assembly receives a P position switch signal from the power management control ECU (HV CPU) and activates the parking lock motor by controlling current, causing the parking lock mechanism to switch. The transmission control ECU assembly stores these DTCs when it detects a malfunction in the parking lock motor system.

DTC No. DTC Detection Condition Trouble Area
C2304 With the power switch on (IG) (auxiliary battery voltage is 8 V or more), voltage of transmission control ECU assembly terminal MUA is 6 V or less for 1 second or more.

  • Auxiliary battery

  • Transmission control ECU assembly

  • Shift control actuator assembly

  • P CON MTR relay (Transaxle parking lock control relay)

  • Wire harness or connector
C2305 With the power switch on (IG) (auxiliary battery voltage is 8 V or more), voltage of transmission control ECU assembly terminal MVA is 6 V or less for 1 second or more.
C2306 With the power switch on (IG) (auxiliary battery voltage is 8 V or more), voltage of transmission control ECU assembly terminal MWA is 6 V or less for 1 second or more.

WIRING DIAGRAM

Refer to the wiring diagram for DTC C2301 Click here.

INSPECTION PROCEDURE

Note


  • Do not remove/install the auxiliary battery or disconnect the cable from the negative (-) auxiliary battery terminal before instructed.

  • Do not disconnect the connectors before instructed.

  • It may not be possible to clear the following DTCs using the intelligent tester: DTC C2300 (Actuator System Malfunction), C2301 (Shift Changing Time Malfunction), C2303 (Short in Power Source Relay Circuit), C2304 (Open or Short Circuit in U Phase), C2305 (Open or Short Circuit in V Phase), C2306 (Open or Short Circuit in W Phase), C2307 (Power Supply) and C2309 (Open in B+ Circuit). In such cases, disconnect the P CON MAIN fuse and wait for at least 60 seconds to clear the DTCs after the repair.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (TRANSMISSION CONTROL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Chassis / Transmission Control / DTC.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      C2304, C2305 and C2306 are detected simultaneously A
      One of C2304, C2305 and C2306 is detected B

      Tech Tips


      • If DTCs C2304, 2305 and 2306 are stored at the same time, there may be a malfunction in the parking lock motor (BMA signal) power source circuit.

      • If DTC C2304, 2305 or 2306 is stored individually, there may be a malfunction in the parking lock motor (MUA, MVA or MWA signal) circuits.

    5. Turn the power switch off.


    B

    READ VALUE USING INTELLIGENT TESTER (U, V, W VOLTAGE) Click here

    A

  2. CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Chassis / Transmission Control / DTC.

    4. Read the freeze frame data of C2304, 2305 and 2306.

      Result
      Result Proceed to
      IG (+B) voltage is 9 V or more A
      IG (+B) voltage is less than 9 V B

    5. Turn the power switch off.


    B

    CLEAR DTC Click here

    A

  3. CLEAR DTC


    1. Turn the power switch on (IG).

    2. Enter the following menus: Chassis / Transmission Control / DTC.

    3. Read and record the DTCs and freeze frame data.

    4. Turn the power switch off.

    5. Disconnect the P CON MAIN fuse and wait for at least 60 seconds.

    6. Check for DTCs again to see if the DTCs are cleared.


    NEXT

  4. CHARGE AUXILIARY BATTERY


    1. Charge the auxiliary battery.


    NEXT

  5. CHECK DTC OUTPUT (SIMULATION TEST)


    1. Connect the intelligent tester to the DLC3.

    2. Release the brake pedal and turn the power switch on (IG).

      Tech Tips

      Do not turn the power switch on (READY).

    3. Depress the brake pedal and move the shift lever to select neutral (N).

    4. Enter the following menus: Chassis / Transmission Control / DTC.

    5. Check if DTCs are output.

      Result
      Result Proceed to
      C2304, 2305 or 2306 is output A
      DTC is not output. B

    6. Turn the power switch off.


    B

    END (AUXILIARY BATTERY WAS INSUFFICIENTLY CHARGED)

    A

  6. READ VALUE USING INTELLIGENT TESTER (U, V, W VOLTAGE)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Chassis / Transmission Control / Data List / U Phase Voltage Value, V Phase Voltage Value, W Phase Voltage Value.

    4. Read the data list displayed on the intelligent tester.

      Result
      Tester Display Switch Condition Specified Condition
      U Phase Voltage Value Power switch on (IG) 9 to 14 V
      V Phase Voltage Value Power switch on (IG) 9 to 14 V
      W Phase Voltage Value Power switch on (IG) 9 to 14 V

    5. Turn the power switch off.


    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - SHIFT CONTROL ACTUATOR) Click here

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

  7. CLEAR DTC


    1. Turn the power switch on (IG).

    2. Enter the following menus: Chassis / Transmission Control / DTC.

    3. Read and record the DTCs and freeze frame data.

    4. Turn the power switch off.

    5. Disconnect the P CON MAIN fuse and wait for at least 60 seconds.

    6. Check for DTCs again to see if the DTCs are cleared.


    NEXT

  8. INSPECT AUXILIARY BATTERY


    1. Inspect the auxiliary battery Click here (for 2ZR-FXE), Click here (for 5ZR-FXE)).

      Result
      Result Proceed to
      Charge or replace the auxiliary battery. A
      The auxiliary battery voltage is normal. B

    B

    CHARGE AUXILIARY BATTERY Click here

    A

  9. CHARGE OR REPLACE AUXILIARY BATTERY


    1. Charge or replace the auxiliary battery Click here (for 2ZR-FXE), Click here (for 5ZR-FXE)).


    NEXT

    CHECK DTC OUTPUT (SIMULATION TEST) Click here

  10. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - SHIFT CONTROL ACTUATOR)


    1. Disconnect connector A21 from the transmission control ECU assembly.

    2. Disconnect connector D2 from the shift control actuator assembly.

    3. A003Z77E14
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to Shift Control Actuator Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A21-5 (MUA) - D2-1 (MUA) Power switch off Below 1 Ω
      A21-2 (MVA) - D2-6 (MVA) Power switch off Below 1 Ω
      A21-1 (MWA) - D2-7 (MWA) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A21-5 (MUA) or D2-1 (MUA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A21-2 (MVA) or D2-6 (MVA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A21-1 (MWA) or D2-7 (MWA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Connect the shift control actuator assembly connector.

    5. Connect the transmission control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ACTUATOR ASSEMBLY - P CON MTR RELAY)


    1. Disconnect connector D2 from the shift control actuator assembly.

    2. Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

    3. A003VGVE02
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *a

      Front view of wire harness connector

      (to Shift Control Actuator Assembly)
      *b P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Junction Block Assembly

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      D2-2 (BMA) - 5 (P CON MTR relay) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      D2-2 (BMA) or 5 (P CON MTR relay) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reinstall the P CON MTR relay (transaxle parking lock control relay).

    5. Connect the shift control actuator assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY


    1. Disconnect connector A21 from the transmission control ECU assembly connector.

    2. Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

    3. A003VEWE03
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Junction Block Assembly

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A21-5 (MUA) - 5 (P CON MTR relay) Power switch off Below 50 Ω
      A21-2 (MVA) - 5 (P CON MTR relay) Power switch off Below 50 Ω
      A21-1 (MWA) - 5 (P CON MTR relay) Power switch off Below 50 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A21-5 (MUA) - Body ground Power switch off 10 kΩ or higher
      A21-2 (MVA) - Body ground Power switch off 10 kΩ or higher
      A21-1 (MWA) - Body ground Power switch off 10 kΩ or higher
      5 (P CON MTR relay) - Body ground Power switch off 10 kΩ or higher

    4. Reinstall the P CON MTR relay (transaxle parking lock control relay).

    5. Connect the transmission control ECU assembly connector.


    NG

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY Click here

    OK

  13. INSPECT P CON MTR RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)


    1. A003YLDE01

      Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 5 Auxiliary battery voltage is not applied between terminals 1 and 2 10 kΩ or higher
      Auxiliary battery voltage is applied between terminals 1 and 2 Below 1 Ω

    3. Reinstall the P CON MTR relay (transaxle parking lock control relay).


    NG

    REPLACE P CON MTR RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)

    OK

  14. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - P CON MTR RELAY)


    1. Disconnect connector A21 from the transmission control ECU assembly.

    2. Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

    3. A003VEWE04
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Junction Block Assembly

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A21-23 (BMA) - 2 (P CON MTR relay) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A21-23 (BMA) or 2 (P CON MTR relay) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reinstall the P CON MTR relay (transaxle parking lock control relay).

    5. Connect the transmission control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK HARNESS AND CONNECTOR (P CON MTR RELAY - BODY GROUND)


    1. Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

    2. A003Y3TE02
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *a P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Junction Block Assembly

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      1 (P CON MTR relay) - Body ground Power switch off Below 1 Ω

    3. Reinstall the P CON MTR relay (transaxle parking lock control relay).


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  16. CHECK HARNESS AND CONNECTOR (P CON MTR RELAY POWER SOURCE CIRCUIT)


    1. Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room junction block assembly.

    2. A003Y3TE02
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *a P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Junction Block Assembly

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      3 (P CON MTR relay) - Body ground Always 9 to 14 V

    3. Reinstall the P CON MTR relay (transaxle parking lock control relay).


    NG

    CHECK AND REPAIR POWER SOURCE CIRCUIT

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here