AUTOMATIC TRANSMISSION SYSTEM(for 8AR-FTS), Diagnostic DTC:P280713

DTC Code DTC Name
P280713 Pressure Control Solenoid "G" Circuit Open

DESCRIPTION

Based on the ON-OFF combinations of the solenoid (SL1, SL2, SL3, SL4 and SL5) valves, the ECM performs gear shifts from 1st gear to 8th gear.

If a circuit related to a solenoid valve is open or shorted, the ECM uses the fail-safe function to turn other solenoid valves ON or OFF. If all solenoid valves are malfunctioning, only the mechanical fluid pressure circuit will function and some manual operation will be possible. If an open or short has occurred, the ECM cuts power to the malfunctioning solenoid valve.

Tech Tips

The following table shows normal operation of the solenoid (SL4) valve when the shift lever is in D.

Shift Solenoid Valve Operation:
Gear 1st 2nd 3rd 4th 5th 6th 7th 8th
Solenoid (SL4) Valve OFF OFF OFF ON OFF ON OFF OFF
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P280713 Pressure Control Solenoid "G" Circuit Open

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. Driving so that gear changes occur

  2. Solenoid (SL4) valve circuit is open or shorted

  3. 1 second

  4. 1-trip detection logic

  • Solenoid (SL4) valve

  • Transmission wire

  • Harness and connector

  • ECM

 Comes on DTC stored

SAE Code:

P2810

MONITOR DESCRIPTION

This DTC indicates an open or short in the solenoid (SL4) valve circuit. The ECM commands gear shifts by turning the shift solenoid valves on or off. When there is an open or short in any shift solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores a DTC.

The ECM performs the fail-safe function and turns the other normal shift solenoid valves on or off. In case of an open or short circuit, the ECM stops sending current to the open or shorted solenoid.

WIRING DIAGRAM

B0074B3E39
*a Solenoid (SL4) Valve
*b Transmission Wire

CAUTION / NOTICE / HINT

Note

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

Click here

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Perform the D Position Shift Test inspection in Road Test.

    Click here

  2. Check for DTCs again.

    Click here

PROCEDURE


  1. CHECK HARNESS AND TRANSMISSION WIRE (TRANSMISSION WIRE (SOLENOID (SL4) VALVE) - ECM)


    1. Disconnect the F66 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F66-13 (SL4+) - F66-12 (SL4-) 20°C (68°F) 5.0 to 5.6 Ω
      F66-13 (SL4+) or F66-12 (SL4-) - Body ground 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 A/T CODE REGISTRATION Click here

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


    1. Disconnect the F61 transmission wire connector.

    2. Disconnect the F66 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F61-26 (SL4+) - F66-13 (SL4+) Always Below 1 Ω
      F61-27 (SL4-) - F66-12 (SL4-) Always Below 1 Ω
      F61-26 (SL4+) or F66-13 (SL4+) - Body ground Always 10 kΩ or higher
      F61-27 (SL4-) or F66-12 (SL4-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  4. INSPECT SOLENOID (SL4) VALVE


    1. B007782C46
      *a

      Component without harness connected

      (Solenoid (SL4) Valve)

      Remove the solenoid (SL4) valve.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal 1 of the solenoid (SL4) valve - 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 2 and a negative (-) lead to terminal 1 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 (SL4) VALVE Click here