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 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.

CAUTION / NOTICE / HINT

Note


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

  • It may not be possible to clear the following DTCs using the GTS: 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 GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Body Electrical / Transmission Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to
      DTCs C2304, C2305 and C2306 are detected simultaneously A
      Only DTC C2304, C2305 or 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 GTS (U, V, W VOLTAGE) Click here

    A

  2. CHECK FREEZE FRAME DATA


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Body Electrical / Transmission Control / Trouble Codes.

    4. Read the freeze frame data of DTCs C2304, C2305 and C2306.

      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: Body Electrical / Transmission Control / Trouble Codes.

    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 GTS 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: Body Electrical / Transmission Control / Trouble Codes.

    5. Check if DTCs are output.

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

    6. Turn the power switch off.


    B

    END (AUXILIARY BATTERY WAS INSUFFICIENTLY CHARGED)

    A

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


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read the data list displayed on the GTS.

      Result
      Tester Display 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.


    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    NG

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

  7. CLEAR DTC


    1. Turn the power switch on (IG).

    2. Enter the following menus: Body Electrical / Transmission Control / Trouble Codes.

    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.

      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.


    NEXT

    CHECK DTC OUTPUT (SIMULATION TEST) Click here

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


    1. Disconnect the A23 transmission control ECU assembly connector.

    2. Disconnect the D2 shift control actuator assembly connector.

    3. A005DQXE03
      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 Condition Specified Condition
      A23-5 (MUA) - D2-1 (MUA) Power switch off Below 1 Ω
      A23-2 (MVA) - D2-6 (MVA) Power switch off Below 1 Ω
      A23-1 (MWA) - D2-7 (MWA) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A23-5 (MUA) or D2-1 (MUA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A23-2 (MVA) or D2-6 (MVA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A23-1 (MWA) or D2-7 (MWA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Connect the D2 shift control actuator assembly connector.

    5. Connect the A23 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 the D2 shift control actuator assembly connector.

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

    3. A005DQDE01
      Text in Illustration
      *1 Engine Room Relay Block and 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 Relay Block and Junction Block Assembly

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      D2-2 (BMA) - 5 (P CON MTR relay) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection 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 D2 shift control actuator assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY


    1. Disconnect the A23 transmission control ECU assembly connector.

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

    3. A005CHPE01
      Text in Illustration
      *1 Engine Room Relay Block and 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 Relay Block and Junction Block Assembly

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A23-5 (MUA) - 5 (P CON MTR relay) Power switch off Below 50 Ω
      A23-2 (MVA) - 5 (P CON MTR relay) Power switch off Below 50 Ω
      A23-1 (MWA) - 5 (P CON MTR relay) Power switch off Below 50 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A23-5 (MUA) - Body ground Power switch off 10 kΩ or higher
      A23-2 (MVA) - Body ground Power switch off 10 kΩ or higher
      A23-1 (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 A23 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. A005AC9E06

      Remove the P CON MTR relay (transaxle parking lock control relay) from the engine room relay block and 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 the A23 transmission control ECU assembly connector.

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

    3. A005CHPE02
      Text in Illustration
      *1 Engine Room Relay Block and 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 Relay Block and Junction Block Assembly

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A23-23 (BMA) - 2 (P CON MTR relay) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A23-23 (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 A23 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 relay block and junction block assembly.

    2. A005C65E07
      Text in Illustration
      *1 Engine Room Relay Block and Junction Block Assembly
      *a P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Relay Block and Junction Block Assembly

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

      Standard Resistance (Check for Open)
      Tester Connection 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 relay block and junction block assembly.

    2. A005C65E07
      Text in Illustration
      *1 Engine Room Relay Block and Junction Block Assembly
      *a P CON MTR Relay (transaxle parking lock control relay) Connector of Engine Room Relay Block and 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).


    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    NG

    CHECK AND REPAIR POWER SOURCE CIRCUIT