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Home >> Toyota >> 2003 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 770 (Automatic Transmission Electronic Controlled (ECT) - A750E & A750F (2UZ-FE) - Diagnostics) >> DTC P0973, P0974: Shift Solenoid "A" Control Circuit Low/High (Shift Solenoid Valve S1) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

ECM COMMAND GEARSHIFT CHART

ECM command gearshift 1st 2nd 3rd 4th 5th
Shift solenoid valve S1 ON ON OFF OFF OFF
  1. INSPECT TRANSMISSION WIRE(S1) 
    1. Disconnect the transmission wire connector from the transmission.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART (1 OF 3)

      Tester Connection Specified Condition 20°C (68°F)
      8 - Body ground 11 to 15 Ω
      Fig 1: Transmission Wire Connector
      G02584942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step   3 
    2. OK: GO TO NEXT STEP. 
  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) 
    1. Connect the transmission connector to the transmission.
    2. Disconnect the connector from the ECM.
    3. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART (2 OF 3)

      Tester Connection Specified Condition 20°C (68°F)
      E5 - 11 (S1) -Body ground 11 to 15 Ω
    Fig 2: Identifying Tester Connection Specified Condition
    G02584943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (SEE  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: GO TO NEXT STEP. 

    REPLACE  ECM (2UZ-FE) 

  3. INSPECT SHIFT SOLENOID VALVE(S1) 
    1. Remove the shift solenoid valve S1.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      Fig 3: Inspecting Shift Solenoid Valve(S1)
      G02584944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TESTER CONNECTION SPECIFIED CONDITION CHART (3 OF 3)

      Tester Connection Specified Condition 20°C (68°F)
      Solenoid Connector (S1) - Solenoid Body (S1) 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. 

    1. NG: REPLACE SHIFT SOLENOID VALVE (S1) (SEE  TRANSMISSION VALVE BODY ASSY (A750E/A750F)  ) 
    2. OK: GO TO NEXT STEP. 

    REPAIR OR REPLACE  TRANSMISSION WIRE (A750E/A750F)