ELECTRONIC SHIFT LEVER SYSTEM, Diagnostic DTC:P272C73

DTC Code DTC Name
P272C73 Park Pawl Motor Relay System Actuator Stuck Closed

DESCRIPTION

The No. 1 integration relay (P-CON relay) is activated by voltage output from the hybrid vehicle control ECU and supplies power to the shift control actuator assembly (parking lock motor).

If the hybrid vehicle control ECU detects a malfunction of the No. 1 integration relay (P-CON relay), it stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P272C73 Park Pawl Motor Relay System Actuator Stuck Closed When the P-CON relay is off, voltage at terminals MUA, MVA or MWA of the hybrid vehicle control ECU is 6 V or more for 0.064 seconds or more.

  • Hybrid vehicle control ECU

  • No. 1 integration relay (P-CON relay)

  • Wire harness or connector

  • Master Warning Light


    • Comes on


  • Multi-information Display Error Message


    • Displayed

 DTC stored

CONFIRMATION DRIVING PATTERN

Tech Tips

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Turn the power switch on (IG).

  2. With the brake pedal depressed, select neutral (N).

  3. Push the P position switch (transmission shift main switch).

WIRING DIAGRAM

Refer to the wiring diagram for DTC P1C8F14.

Click here

PROCEDURE


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


    1. Disconnect the C2 shift control actuator assembly connector.

    2. A003MDAC29
      *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 Condition Specified Condition
      C2-2 (BMA) - Body ground Power switch off Below 1 V

    3. Reconnect the C2 shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    INSPECT NO. 1 INTEGRATION RELAY (P-CON RELAY) Click here

    OK

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


    1. Disconnect the A41 hybrid vehicle control ECU connector.

    2. Disconnect the C2 shift control actuator assembly connector.

    3. A003MI7C08
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *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 Short)
      Tester Connection Condition Specified Condition
      A41-1 (MUA) or C2-1 (MUA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-2 (MVA) or C2-6 (MVA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-3 (MWA) or C2-7 (MWA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the C2 shift control actuator assembly connector.

    5. Reconnect the A41 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT NO. 1 INTEGRATION RELAY (P-CON RELAY)

    Click here

    Result
    Proceed to
    OK
    NG

    NG

    REPLACE NO. 1 INTEGRATION RELAY (P-CON RELAY) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - P-CON RELAY)


    1. Disconnect the A41 hybrid vehicle control ECU connector.

    2. Disconnect the 1B No. 1 integration relay connector.

    3. B006I72C10
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)

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

      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A41-15 (BMA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the 1B No. 1 integration relay connector.

    5. Reconnect the A41 hybrid vehicle control ECU 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)


    1. Disconnect the C2 shift control actuator assembly connector.

    2. Disconnect the 1B No. 1 integration relay connector.

    3. A003MDAC30
      *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 (Check for Short)
      Tester Connection Condition Specified Condition
      C2-2 (BMA) - Body ground and other terminals Power switch off 10 kΩ or higher

    4. Reconnect the 1B No. 1 integration relay connector.

    5. Reconnect the C2 shift control actuator assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR