AUTOMATIC TRANSMISSION SYSTEM(for 2GR-FSE), Diagnostic DTC:P0985, P0986

DTC Code DTC Name
P0985 Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR)
P0986 Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR)

DESCRIPTION

Based on the ON-OFF combinations of the SL1, 2, 3, 4 and 5, SLT, SLU, SL and SR solenoids, the TCM performs gear shifts from 1st gear to 8th gear. If a circuit related to a solenoid valve is open or shorted, the TCM 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 TCM cuts power to the malfunctioning solenoid valve.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0985 Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR) The TCM detects short in solenoid valve SR circuit 2 times when solenoid valve SR is operated (1 trip detection logic)

  • Shift solenoid valve SR

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored
P0986 Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR) The TCM detects open in solenoid valve SR circuit 2 times when solenoid valve SR is operated (1 trip detection logic)

  • Shift solenoid valve SR

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored

MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid valve SR circuit. When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem, illuminates the MIL and stores a DTC. When the shift solenoid valve SR is ON, if resistance is 8 Ω or less, the TCM determines there is a short in the shift solenoid valve SR circuit.

When the shift solenoid valve SR is OFF, if resistance is 100 kΩ or more, the TCM determines there is an open in the shift solenoid valve SR circuit.

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WIRING DIAGRAM

A001K4FE12
*1 Shift Solenoid Valve SR
*2 Transmission Wire

CAUTION / NOTICE / HINT

Note

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

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PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. A001KHXC15
      *a

      Rear view of wire harness connector

      (to TCM)

      Disconnect the F71 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F71-15 (SR) - Body ground Always 11 to 15 Ω
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  2. REPLACE TCM


    1. Replace the TCM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM A/T CODE REGISTRATION Click here

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


    1. Disconnect the F73 transmission wire connector.

    2. Disconnect the F71 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F73-18 (SR) - F71-15 (SR) Always Below 1 Ω
      F73-18 (SR) or F71-15 (SR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT SHIFT SOLENOID VALVE SR


    1. B003W20C01
      *a Shift Solenoid Valve SR

      Remove the shift solenoid valve SR.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Shift solenoid valve SR connector - Shift solenoid valve SR body 20°C (68°F) 11 to 15 Ω

    3. Connect a battery positive (+) lead to the terminal of the solenoid valve connector, and a negative (-) lead to the solenoid body. Then 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 SHIFT SOLENOID VALVE SR Click here