AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P271312

DTC Code DTC Name
P271312 Pressure Control Solenoid "D" Circuit Short to Battery

DESCRIPTION

Refer to DTC P27137F.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P271312 Pressure Control Solenoid "D" Circuit Short to Battery While the engine is running, a short to +B is detected in the solenoid (SLT) valve circuit for 1 second (1-trip detection logic).

  • Solenoid (SLT) valve

  • Transmission wire

  • Harness and connector

  • ECM

 Comes on DTC stored

SAE Code:

P2721

MONITOR DESCRIPTION

When a short to +B in the solenoid (SLT) valve circuit is detected, the ECM will determine that there is a malfunction, illuminate the MIL and store this DTC.

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.


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for 2 minutes or more.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine.

  7. Wait for 2 seconds or more with the engine running.

  8. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.

  9. Input the DTC: P271312.

  10. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

B006YTTE12
*a Solenoid (SLT) Valve
*b Transmission Wire

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

Click here

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SLT) VALVE) - ECM)


    1. Disconnect the C96 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C96-67 (SLT+) or C96-37 (SLT-) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) Click here

    OK

  2. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM REGISTRATION Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. Disconnect the C93 transmission wire connector.

    2. Disconnect the C96 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C93-24 (SLT+) or C96-67 (SLT+) - Other terminals Always 10 kΩ or higher
      C93-23 (SLT-) or C96-37 (SLT-) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

    OK

  4. INSPECT SOLENOID (SLT) VALVE


    1. B0071RQC76
      *a

      Component without harness connected

      (Solenoid (SLT) Valve)

      Remove the solenoid (SLT) valve.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Solenoid (SLT) valve connector terminal 1 - terminal 2 20°C (68°F) 5.0 to 5.6 Ω

    3. Connect a positive (+) lead from the battery with a 21 W bulb to terminal 1 and a negative (-) lead to terminal 2 of the solenoid valve connector. Check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SOLENOID (SLT) VALVE Click here