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Home >> Toyota >> 2009 >> Avalon XLS >> Repair and Diagnosis >> Transmission >> Automatic Transmission - U660E >> Automatic Transaxle System >> Circuit Tests >> Transmission Control Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (BATTERY - TRANSMISSION CONTROL SWITCH) 
    1. Disconnect the transmission control switch connector of shift lever assembly.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Switch Condition Specified Condition
      3 - Body ground Ignition switch ON (IG) 11 to 14 V
      Ignition switch OFF Below 1 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 1: Identifying D24 Connector Terminal (With And Without Smart Key System)
    G05000556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      7(1) - Body ground
      5(2) - Body ground      		 Always Below 1 Ω
      (1) w/ Smart Key System
      (2) w/o Smart Key System

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying D24 Connector Terminal (With And Without Smart Key System)
    G05000557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  3. INSPECT TRANSMISSION CONTROL SWITCH 
    1. Measure the resistance between each terminal of the shift lever assembly when the shift lever is moved to each position.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Shift Position Specified Condition
      3 - 9(1)
      3 - 7(2)      		 S, "+" and "-" Below 1 Ω
      Except S, "+" and "-" 10 kΩ or higher
      2 - 7(1)
      2 - 5(2)      		 Press continuously
      "+"
      (Up shift)      		 Below 1 Ω
      S 10 kΩ or higher
      1 - 7(1)
      1 - 5(2)      		 Press continuously
      "-"
      (Down shift)      		 Below 1 Ω
      S 10 kΩ or higher
      (1) w/ Smart Key System
      (2) w/o Smart Key System

    NG: REPLACE TRANSMISSION CONTROL SWITCH  (See REMOVAL  )

    Fig 3: Identifying Transmission Control Switch Connector Terminal
    G05405813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) 
    1. Connect the transmission control switch connector of the shift lever assembly.
    2. Disconnect the ECM connector.
    3. Turn the ignition switch on (IG), and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Shift Position Specified Condition
      A55-25 (S) - Body ground S, "+" and "-" 11 to 14 V
      Except S, "+" and "-" Below 1 V
      Fig 4: Identifying A55 Connector Terminal
      G05405814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch off.
    5. Disconnect the ECM connector.
    6. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Shift Position Specified Condition
      A55-16 (SFTU) - Body ground Press continuously
      "+"
      (Up shift)      		 Below 1 Ω
      S 10 kΩ or higher
      A55-51 (SFTD) - Body ground Press continuously
      "-"
      (Down shift)      		 Below 1 Ω
      S 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

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