AUTOMATIC TRANSMISSION SYSTEM(for 1GR-FE), 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 the "ON" and "OFF" operation of the shift solenoid valves SL1, SL2, S1, S2 and SR which is controlled by the ECM. If an open or short circuit occurs in one of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated smoothly (In case of an open or short circuit, the ECM stops sending current to the circuit. For details, refer to the Fail-Safe Chart Click here.

DTC Code DTC Detection Condition Trouble Area
P0985 The ECM detects a short in the solenoid valve SR circuit 2 times when the solenoid valve SR is operated (1 trip detection logic).

  • Short in shift solenoid valve SR circuit

  • Shift solenoid valve SR

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

  • Open in shift solenoid valve SR circuit

  • Shift solenoid valve SR

  • ECM

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 ECM detects the problem, illuminates the MIL and stores the DTC. When the shift solenoid valve SR is on, if its resistance is 8 Ω or less, the ECM determines there is a short in the shift solenoid valve SR circuit.

When the shift solenoid valve SR is off, if its resistance is 100 kΩ or higher, the ECM determines there is an open in the shift solenoid valve SR circuit Click here.

WIRING DIAGRAM

A01X08DE78
*1 Shift Solenoid Valve SR
*2 Transmission Wire

CAUTION / NOTICE / HINT

Tech Tips

The shift solenoid valve SR turns ON/OFF normally when the shift lever is in D.

ECM gear shift command 1st 2nd 3rd 4th 5th
Shift solenoid valve SR OFF OFF OFF OFF ON

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SR)


    1. A01XAP4E65
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      7 (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. A01X7O4E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C45-6 (SR) - Body ground 20°C (68°F) 11 to 15 Ω

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT SHIFT SOLENOID VALVE SR


    1. A01X97SE01
      Text in Illustration
      *a

      Component without harness connected

      (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 terminal - Shift solenoid valve SR body 20°C (68°F) 11 to 15 Ω

    3. Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.

      OK
      Measurement Condition Specified Condition

      • Battery positive (+) → Shift solenoid valve SR connector

      • Battery negative (-) → Shift solenoid valve SR body

      		 Valve moves and makes an operating noise

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SHIFT SOLENOID VALVE SR Click here