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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 P0976, P0977: Shift Solenoid "B" Control Circuit Low/High (Shift Solenoid Valve S2) >> 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:

MALFUNCTION CHART

ECM command gearshift 1st 2nd 3rd 4th 5th
Shift solenoid valve S2 OFF ON ON OFF OFF
  1. INSPECT TRANSMISSION WIRE(S2) 
    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)
      15 - Body ground 11 to 15 Ω
      Fig 1: Disconnecting Transmission Wire Connector From Transmission
      G02584947Courtesy 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 - 10 (S2) - Body ground 11 to 15 Ω
      Fig 2: Identifying Harness And Connector (Transmission Wire - ECM)
      G02584948Courtesy 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(S2) 
    1. Remove the shift solenoid valve S2.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION CHART (3 OF 3)

      Tester Connection Specified Condition 20°C (68°F)
      Solenoid Connector (S2) - Solenoid Body (S2) 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. 

      Fig 3: Replacing Harness Or Connector
      G02584949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE SHIFT SOLENOID VALVE (S2) (SEE  TRANSMISSION VALVE BODY ASSY (A750E/A750F)  ) 
    2. OK: GO TO NEXT STEP. 

    REPAIR OR REPLACE  TRANSMISSION WIRE (A750E/A750F)