Shift Lock System On-Vehicle Inspection

Transmission. Lexus Gs430, Gs300. Uzs190 Grs190
A960E Automatic Transmission. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSPECT SHIFT LOCK CONTROL ECU SUB-ASSEMBLY

Shift Lock System -- On-Vehicle Inspection



1. INSPECT SHIFT LOCK CONTROL ECU SUB-ASSEMBLY
  1. Check shift lock operation.

    1. Move the shift lever to the P position.

    2. Turn the engine switch off.

    3. Check that the shift lever cannot be moved to any position other than P.

    4. Turn the engine switch on (IG), depress the brake pedal and check that the shift lever can be moved to another position.
      If the operation cannot be done as specified, inspect the shift lock control unit.

  1. Check shift lock release button operation.

    1. Using a screwdriver, remove the shift lock release cover.

    2. When operating the shift lever with the shift lock release button pressed, check that the lever can be moved to any position other than P.
      If the operation cannot be done as specified, check the shift lever assembly installation condition.



  1. Inspect the shift lock control unit assembly.



      Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Shift Lock System  On-Vehicle Inspection
    1. Measure the voltage according to the value(s) in the table below.

      HINT:
      Do not disconnect the shift lock control unit assembly connector.

      Terminal
      Measuring Condition
      Voltage (V)
      2 (STP) - 4 (E)
      Depress brake pedal
      10 to 14
      2 (STP) - 4 (E)
      Release brake pedal
      Below 1
      1 (IG) - 4 (E)
      Engine switch on (IG)
      10 to 14
      1 (IG) - 4 (E)
      Engine switch off
      Below 1


    2. Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Shift Lock System  On-Vehicle Inspection
    3. Measure the resistance according to the value in the table below.

      HINT:
      Do not disconnect the shift lock control unit assembly connector.
      If the result is not as specified, replace the shift lever assembly.

      Terminal
      Measuring Condition
      Specified Value
      4 (E) - Body ground
      Always
      Below 1 Ω