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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Automatic Transaxle) >> Automatic Transmission System >> DTC P0985: Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR); DTC P0986 Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND TRANSMISSION WIRE (TRANSMISSION WIRE - TCM, TRANSMISSION WIRE (SHIFT SOLENOID VALVE SR)) 
    1. Disconnect the TCM connector
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E59-15 (SR) - Body ground Always 11 to 15 Ω
      3. Fig 1: Identifying E59 TCM Connector Terminal
      G05750729Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to step  3

    OK: Go to next Step 

  2. REPLACE TCM 
    1. Replace the TCM (See REMOVAL  )

    NEXT: PERFORM A/T CODE REGISTRATION  (See REGISTRATION  )

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) 
    1. Disconnect the transmission wire connector.
    2. Disconnect the TCM connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E47-18 (SR) - E59-15 (SR) Always Below 1 Ω
      E47-18 (SR) or E59-15 (SR) - Body ground Always 10 kΩ or higher
      4. Fig 2: Identifying E47 Transmission Wire And E59 TCM Connector Terminal
      G05750755Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next Step 

  4. INSPECT SHIFT SOLENOID VALVE SR 
    1. Remove the shift solenoid valve SR (See DISASSEMBLY  ).
    2. Measure the resistance according to the value (s) in the table below

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      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. 

      Fig 3: Inspecting Shift Solenoid Valve SR
      G04948332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE SHIFT SOLENOID VALVE SR  (See DISASSEMBLY  )

    OK: REPAIR OR REPLACE TRANSMISSION WIRE  (See REMOVAL  )

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