AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P2769, P2770

DTC Code DTC Name
P2769 Short in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL)
P2770 Open in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL)

DESCRIPTION

Based on the ON/OFF condition of solenoid valve SL, the TCM controls the fluid pressure to the lock-up relay valve, and performs lock-up control.

DTC No. DTC Detection Condition Trouble Area
P2769

TCM detects short in solenoid valve SL circuit 2 times when solenoid valve SL is operated

(2 trip detection logic)

  • Shift solenoid valve SL

  • Transmission wire

  • Harness and connector

  • TCM
P2770

TCM detects open in solenoid valve SL circuit 2 times when solenoid valve SL is operated

(2 trip detection logic)

  • Shift solenoid valve SL

  • Transmission wire

  • Harness and connector

  • TCM

Fail-safe function:

If the TCM detects a malfunction, it turns the shift solenoid valve SL OFF.

MONITOR DESCRIPTION

Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the TCM sends a signal to the solenoid valve SL to regulate the hydraulic pressure and provide smoother torque converter clutch engagement. The shift solenoid valve SL responds to commands from the TCM. The valve controls the lock-up relay valve to perform the torque-converter lock-up function. If the TCM detects an open or short circuit for shift solenoid valve SL, it will illuminate the MIL.

WIRING DIAGRAM

A01GHKOE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND TRANSMISSION WIRE (TRANSMISSION WIRE - TCM, TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL))


    1. A01GKZME03

      Disconnect the E6 TCM connector.

    2. Measure the resistance of the wire harness side connector.

      Standard resistance
      Tester Connection Condition Specified Condition
      E6-7 (SL) - Body ground Always 11 to 15 Ω

    NG

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

    OK

  2. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM AT REGISTRATION Click here

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


    1. A01GJ47E04

      Disconnect the E50 transmission wire connector.

    2. Disconnect the E6 TCM connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard resistance
      Tester Connection Condition Specified Condition
      E50-7 (SL) - E6-7 (SL) Always Below 1 Ω
      E50-7 (SL) or E6-7 (SL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT SHIFT SOLENOID VALVE SL


    1. A01GHWNE01

      Remove the shift solenoid valve SL Click here.

    2. Measure the resistance of the shift solenoid valve.

      Standard resistance
      Tester Connection Condition Specified Condition
      Shift solenoid valve SL connector - Shift solenoid valve SL Body 20°C (68°F) 11 to 15 Ω

    3. Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating noise.

      OK
      Valve moves and makes operating noise.

    NG

    REPLACE SHIFT SOLENOID VALVE SL Click here

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here