AUTOMATIC TRANSAXLE SYSTEM, 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

Shifting from 1st to 5th is performed in combination with "ON" and "OFF" operation of the shift solenoid valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or short circuit occurs in either of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated smoothly (Fail safe function).

DTC No. DTC Detection Condition Trouble Area
P0985 ECM detects short in solenoid valve SR circuit 2 times when solenoid valve SR is operated (1-trip detection logic)

  • Short in shift solenoid valve SR circuit

  • Shift solenoid valve SR

  • ECM
P0986 ECM detects open in solenoid valve SR circuit 2 times when solenoid valve SR is not operated (1-trip detection logic)

  • Open in shift solenoid valve SR circuit

  • Shift solenoid valve SR

  • ECM

MONITOR DESCRIPTION

The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF". When there is an open or short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid valves "ON/OFF" (In case of an open or short circuit, the ECM stops sending current to the circuit.) Click here.

WIRING DIAGRAM

A017CEZE05

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SR)


    1. A017EZRE55

      Disconnect the transmission wire connector from the transaxle.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      9 (SR) - Body ground 20°C (68°F) 11 to 15 Ω

    NG

    INSPECT SHIFT SOLENOID VALVE (SR) Click here

    OK

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


    1. A017FSLE08

      Connect the transmission wire connector to the transaxle.

    2. Disconnect the ECM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      B50-31 (SR) - Body ground 20°C (68°F) 11 to 15 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM (for 2GR-FE) Click here

  3. INSPECT SHIFT SOLENOID VALVE (SR)


    1. A017FVDE07

      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
      Solenoid Connector (SR) - Solenoid Body (SR) 20°C (68°F) 11 to 15 Ω

    3. Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.

      OK
      The solenoid makes an operating sound.

    NG

    REPLACE SHIFT SOLENOID VALVE (SR) Click here

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here