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. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
C2304 Open or Short Circuit in U Phase With the power switch on (IG) (auxiliary battery voltage is 8 V or more), voltage at 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 relay (Transaxle parking lock control relay)

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Comes on

 DTC stored
C2305 Open or Short Circuit in V Phase With the power switch on (IG) (auxiliary battery voltage is 8 V or more), voltage at transmission control ECU assembly terminal MVA is 6 V or less for 1 second or more.

  • Auxiliary battery

  • Transmission control ECU assembly

  • Shift control actuator assembly

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

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Comes on

 DTC stored
C2306 Open or Short Circuit in W Phase With the power switch on (IG) (auxiliary battery voltage is 8 V or more), voltage at transmission control ECU assembly terminal MWA is 6 V or less for 1 second or more.

  • Auxiliary battery

  • Transmission control ECU assembly

  • Shift control actuator assembly

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

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Comes on

 DTC stored

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.

  • Do not disconnect the connectors 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.


      Body Electrical > Transmission Control > Trouble Codes
      Result
      Result Proceed to
      DTC 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, C2305 or C2306 is stored individually, there may be a malfunction in the parking lock motor (MUA, MVA or MWA) circuit

    5. Turn the power switch off.


    B

    GO TO STEP 6 Click here

    A

  2. CHECK FREEZE FRAME DATA (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. Read the freeze frame data of C2304, 2305 and 2306.


      Body Electrical > Transmission Control > Trouble Codes
      Body Electrical > Transmission Control
      Tester Display
      IG(+B) Voltage Value
      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

    REPLACE AUXILIARY BATTERY Click here

    A

  3. CLEAR DTC

    Result
    Proceed to
    NEXT

    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.


      Body Electrical > Transmission Control > Trouble Codes

    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.

      Result
      Proceed to
      NEXT

    NEXT

  4. CHARGE AUXILIARY BATTERY


    1. Charge the auxiliary battery.

      Result
      Proceed to
      NEXT

    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.


      Body Electrical > Transmission Control > Trouble Codes
      Result
      Result Proceed to
      DTC C2304, 2305 or 2306 is output A
      DTCs C2304, 2305 and 2306 are 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.


      Body Electrical > Transmission Control > Data List
      Tester Display
      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.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    NG

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


    1. Disconnect the A131 transmission control ECU assembly connector.

    2. Disconnect the B169 shift control actuator assembly connector.

    3. A00YPOJC09
      *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 Display Condition Specified Condition
      A131-5 (MUA) - B169-1 (MUA) Power switch off Below 1 Ω
      A131-2 (MVA) - B169-6 (MVA) Power switch off Below 1 Ω
      A131-1 (MWA) - B169-7 (MWA) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Display Condition Specified Condition
      A131-5 (MUA) or B169-1 (MUA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A131-2 (MVA) or B169-6 (MVA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A131-1 (MWA) or B169-7 (MWA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the B169 shift control actuator assembly connector.

    5. Reconnect the A131 transmission control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the B169 shift control actuator assembly connector.

    2. Remove the P-CON relay (transaxle parking lock control relay) from the No. 1 engine room relay block and No. 1 junction block assembly.

    3. A00YPUTC01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *a

      Front view of wire harness connector

      (to Shift Control Actuator Assembly)
      *b P-CON Relay (transaxle parking lock control relay) Connector of No. 1 Engine Room Relay Block and No. 1 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
      B169-2 (BMA) - 5 (P-CON relay) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B169-2 (BMA) or 5 (P-CON relay) - Body ground and other terminals Power switch off 10 kΩ or higher

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

    5. Reconnect the B169 shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY


    1. Disconnect the A131 transmission control ECU assembly connector.

    2. Remove the P-CON relay (transaxle parking lock control relay) from the No. 1 engine room relay block and No. 1 junction block assembly.

    3. A00YP8GC01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b P-CON Relay (transaxle parking lock control relay) Connector of No. 1 Engine Room Relay Block and No. 1 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
      A131-5 (MUA) - 5 (P-CON relay) Power switch off Below 50 Ω
      A131-2 (MVA) - 5 (P-CON relay) Power switch off Below 50 Ω
      A131-1 (MWA) - 5 (P-CON relay) Power switch off Below 50 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A131-5 (MUA) - Body ground Power switch off 10 kΩ or higher
      A131-2 (MVA) - Body ground Power switch off 10 kΩ or higher
      A131-1 (MWA) - Body ground Power switch off 10 kΩ or higher
      5 (P-CON relay) - Body ground Power switch off 10 kΩ or higher

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

    5. Reconnect the A131 transmission control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SHIFT CONTROL ACTUATOR ASSEMBLY Click here

    OK

  10. INSPECT P-CON RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)

    Result
    Proceed to
    OK
    NG

    1. Remove the P-CON relay (transaxle parking lock control relay) from the No. 1 engine room relay block and No. 1 junction block assembly.

    2. A01KTL3E01

      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 relay (transaxle parking lock control relay).

      Result
      Proceed to
      OK
      NG

    NG

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

    OK

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


    1. Disconnect the A131 transmission control ECU assembly connector.

    2. Remove the P-CON relay (transaxle parking lock control relay) from the No. 1 engine room relay block and No. 1 junction block assembly.

    3. A00YP8GC02
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *b P-CON Relay (transaxle parking lock control relay) Connector of No. 1 Engine Room Relay Block and No. 1 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
      A131-23 (BMA) - 2 (P-CON relay) Power switch off Below 1 Ω
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A131-23 (BMA) or 2 (P-CON relay) - Body ground and other terminals Power switch off 10 kΩ or higher

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

    5. Reconnect the A131 transmission control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Remove the P-CON relay (transaxle parking lock control relay) from the No. 1 engine room relay block and No. 1 junction block assembly.

    2. A00YOG1C01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *a P-CON Relay (transaxle parking lock control relay) Connector of No. 1 Engine Room Relay Block and No. 1 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 relay) - Body ground Power switch off Below 1 Ω

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

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. CHECK HARNESS AND CONNECTOR (P-CON RELAY POWER SOURCE CIRCUIT)


    1. Remove the P-CON relay (transaxle parking lock control relay) from the No. 1 engine room relay block and No. 1 junction block assembly.

    2. A00YOG1C01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *a P-CON Relay (transaxle parking lock control relay) Connector of No. 1 Engine Room Relay Block and No. 1 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 relay) - Body ground Always 9 to 14 V

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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    NG

    CHECK AND REPAIR POWER SOURCE CIRCUIT