ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:C2309

DTC Code DTC Name
C2309 Open in B+ Circuit

DESCRIPTION

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 outputs this DTC.

DTC No. DTC Detection Condition Trouble Area
C2309 With the power switch on (IG), voltage of transmission control ECU terminal +B is 3 V or less for 1 second or more.

  • Transmission control ECU assembly

  • IGCT fuse

  • IGCT NO. 2 fuse

  • Auxiliary battery

  • Wire harness or connector

WIRING DIAGRAM

Refer to the wiring diagram for DTC C2307 Click here.

INSPECTION PROCEDURE

Note

It is not possible to clear the following DTCs using the intelligent tester: DTCs 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). After the repair, it is necessary to disconnect the P CON MAIN fuse and wait for at least 60 seconds to clear the DTCs.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (IG(+B) VOLTAGE VALUE)


    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 / IG(+B) Voltage Value.

    4. Read the Data List displayed on the intelligent tester.

      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 Click here

    A

  2. INSPECT FUSE


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

    2. A01JCERE01
      Text in Illustration
      *1 Engine Room Junction Block Assembly
      *2 IGCT 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 fuse Always Below 1 Ω
      IGCT NO. 2 fuse Always Below 1 Ω

    3. Install the IGCT fuse and IGCT NO. 2 fuse.


    NG

    REPLACE FUSE

    OK

  3. READ VALUE USING INTELLIGENT TESTER (BATTERY VOLTAGE VALUE)


    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 / Battery Voltage Value.

    4. Read the Data List displayed on the intelligent tester.

      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 Click here

    A

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


    1. Disconnect the A23 transmission control ECU assembly connector.

    2. Remove the IGCT No. 2 fuse from the engine room junction block assembly.

    3. A01JARLE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)
      *2 Engine Room Junction Block Assembly
      *3 IGCT No. 2 fuse

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

      Standard resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition
      A23-16 (+B) - 2 (IGCT No. 2 fuse) Power switch off Below 1 Ω
      Standard resistance (Check for Short)
      Tester Connection Switch Condition Specified Condition
      A23-16 (+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. Install the IGCT No. 2 fuse.

    5. Connect the transmission control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    CHECK AND REPAIR POWER SOURCE CIRCUIT