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AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P275612

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DTC Code DTC Name
P275612 Torque Converter Clutch Pressure Control Solenoid Control Circuit Short to Battery
*1 Spool Valve *2 Sleeve *3 Solenoid Coil - - *a Current *b Hydraulic Pressure
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DESCRIPTION

The ECM controls the solenoid (SLU) valve using a predetermined current, and performs lock-up and flex lock-up control.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P275612 Torque Converter Clutch Pressure Control Solenoid Control Circuit Short to Battery While the vehicle is being driven, a short to +B is detected in the solenoid (SLU) valve circuit for 1 second (1-trip detection logic).

  • Solenoid (SLU) valve

  • Transmission wire

  • Harness and connector

  • ECM

 Comes on DTC stored

SAE Code:

P2763
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MONITOR DESCRIPTION

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

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CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Tip:

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 ignition switch to ON and turn the GTS on.

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

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

  5. Turn the ignition switch to ON and turn the GTS on.

  6. Start the engine.

  7. Perform the Lock-up Function inspection in Road Test.

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  8. Stop the vehicle.

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

  10. Input the DTC: P275612.

  11. 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
    Tip:

    • 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.

Table 1. *a Solenoid (SLU) Valve *b Transmission Wire
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SOLENOID (SLU) VALVE) - ECM)


    1. Disconnect the C59 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C59-12 (SLU+) or C59-11 (SLU-) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

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    REPLACE ECM


    1. Replace the ECM.

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      Result
      Proceed to
      NEXT

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    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. Disconnect the C93 transmission wire connector.

    2. Disconnect the C59 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C93-5 (SLU+) or C59-12 (SLU+) - Other terminals Always 10 kΩ or higher
      C93-4 (SLU-) or C59-11 (SLU-) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

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

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    INSPECT SOLENOID (SLU) VALVE


    1. B0071RQC76
      *a

      Component without harness connected

      (Solenoid (SLU) Valve)

      Remove the solenoid (SLU) valve.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Solenoid (SLU) 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 operating sound.
      Result
      Proceed to
      OK
      NG