ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:C2303

DTC Code DTC Name
C2303 Short in Power Source Relay Circuit

DESCRIPTION

The P CON relay (transaxle parking lock control relay) is activated by output voltage from the transmission control ECU assembly and supplies power to the shift control actuator assembly (parking lock motor). The transmission control ECU assembly stores this DTC when it detects a malfunction in the P CON relay (transaxle parking lock control relay).

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
C2303 Short in Power Source Relay Circuit When the P CON relay (transaxle parking lock control relay) is off, voltage of transmission control ECU assembly terminal MUA, MVA and MWA are 6 V or higher for 0.064 seconds or more.

  • Transmission control ECU 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

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.

PROCEDURE


  1. CHECK SHIFT CONTROL ACTUATOR ASSEMBLY (SHIFT CONTROL ACTUATOR ASSEMBLY POWER SOURCE CIRCUIT)


    1. Disconnect the shift control actuator assembly connector.

    2. A01MHR0C25
      *a

      Front view of wire harness connector

      (to Shift Control Actuator Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D8-2 (BMA) - Body ground Power switch off Below 1 V

    3. Reconnect the shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    INSPECT P CON RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY) Click here

    OK

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


    1. Disconnect the transmission control ECU assembly connector.

    2. Disconnect the shift control actuator assembly connector.

    3. A01MJXNC39
      *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
      Tester Connection Switch Condition Specified Condition
      A25-5 (MUA) or D8-1 (MUA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A25-2 (MVA) or D8-6 (MVA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A25-1 (MWA) or D8-7 (MWA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the shift control actuator assembly connector.

    5. Reconnect the transmission control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT P CON RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY)


    1. A01MHXSC03
      *1 P CON relay (Transaxle Parking Lock Control Relay)

      Remove the P CON relay (transaxle parking lock control relay) from the No. 3 motor compartment relay block.

    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. Install 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

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSEMBLY - P CON RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY))


    1. Disconnect the transmission control ECU assembly connector.

    2. Remove the P CON relay (transaxle parking lock control relay) from the No. 3 motor compartment relay block.

    3. A0026RWC30
      *a

      Front view of wire harness connector

      (to Transmission Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A25-23 (BMA) - Body ground and other terminals Power switch off 10 kΩ or higher

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

    5. Reconnect the transmission control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (SHIFT CONTROL ACTUATOR ASSEMBLY - P CON RELAY (TRANSAXLE PARKING LOCK CONTROL RELAY))


    1. Disconnect the shift control actuator assembly connector.

    2. Remove the P CON relay (transaxle parking lock control relay) from the No. 3 motor compartment relay block.

    3. A01MHR0C26
      *a

      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
      Tester Connection Switch Condition Specified Condition
      D8-2 (BMA) - Body ground and other terminals Power switch off 10 kΩ or higher

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

    5. Reconnect the shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR