ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:C2309

DTC Code DTC Name
C2309 Open in B+ Circuit

DESCRIPTION

Auxiliary battery voltage will be applied to the +B terminal when the power switch is turned on (IG). When a +B terminal voltage malfunction is detected, the transmission control ECU assembly stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
C2309 Open in B+ Circuit With the power switch on (IG), voltage at transmission control ECU assembly terminal +B is 3 V or less for 1 second or more.

  • Transmission control ECU assembly

  • IGCT-MAIN fuse

  • IGCT NO. 2 fuse

  • Auxiliary battery

  • 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 C2307.

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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

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PROCEDURE


  1. READ VALUE USING GTS (IG (+B) VOLTAGE VALUE)


    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 / IG (+B) Voltage Value.


      Body Electrical > Transmission Control > Data List
      Tester Display
      IG(+B) Voltage Value

    4. Read the Data List displayed on the GTS.

      Result
      Result Proceed to
      3 V or less A
      Other than above B

    5. Turn the power switch off.


    B

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY for RHD: Click here

    A

  2. INSPECT FUSE


    1. Remove the IGCT-MAIN fuse and IGCT NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.

    2. A01KRZUC01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *2 IGCT-MAIN fuse
      *3 IGCT NO. 2 fuse

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      IGCT-MAIN fuse Always Below 1 Ω
      IGCT NO. 2 fuse Always Below 1 Ω

    3. Reinstall the IGCT-MAIN fuse and IGCT NO. 2 fuse.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FUSE

    OK

  3. READ VALUE USING GTS (BATTERY VOLTAGE VALUE)


    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 / Battery Voltage Value.


      Body Electrical > Transmission Control > Data List
      Tester Display
      Battery Voltage Value

    4. Read the Data List displayed on the GTS.

      Result
      Result Proceed to
      9 V or more A
      Less than 9 V B

    5. Turn the power switch off


    B

    CHARGE OR REPLACE AUXILIARY BATTERY for Hatchback: Click here
    CHARGE OR REPLACE AUXILIARY BATTERY for Wagon: Click here

    A

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - IGCT NO. 2 FUSE)


    1. Disconnect the A131 transmission control ECU assembly connector.

    2. Remove the IGCT NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.

    3. A01KTYCC01
      *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 IGCT NO. 2 Fuse 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
      A131-16 (+B) - 2 (IGCT NO. 2 fuse) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A131-16 (+B) - Body ground and other terminals Power switch off 10 kΩ or higher

      Note

      Be careful not to break the fuse holder by forcing the tester probes into it during this inspection.

    4. Reinstall the IGCT NO. 2 fuse.

    5. Reconnect the A131 transmission control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    CHECK AND REPAIR POWER SOURCE CIRCUIT

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR