Yaw Rate And Deceleration Sensor Inspection

Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Brake Control. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

  1. CHECK YAW RATE SENSOR OR DECELERATION SENSOR

  2. INSPECT DECELERATION SENSOR (w/o VSC)

Yaw Rate And Deceleration Sensor -- Inspection



1. CHECK YAW RATE SENSOR OR DECELERATION SENSOR

  1. Check the yaw rate sensor or deceleration sensor.
    Under any of the following conditions, replace the sensor with a new one.

    1. The surface of the sensor is cracked, dented, or chipped off.
    2. The connector or wire harness is scratched, cracked, or damaged.
    3. The sensor has been dropped.


2. INSPECT DECELERATION SENSOR (w/o VSC)


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Brake Control.Anti-Lock Brake System.Yaw Rate And Deceleration Sensor Inspection

  1. Connect 3 dry cell batteries of 1.5 V in series (approximately 4.5 V total).

  1. Connect the batteries' positive (+) lead to terminal 3 (VGS) and the negative (-) lead to terminal 2 (GGND).

    NOTICE:
    Do not apply 6 V or higher to terminals 3 (VGS) and 2 (GGND).

  1. Connect the voltmeter's positive (+) lead to the negative (-) lead of the batteries, and the negative (-) lead to terminal 1 (GL1).

  1. Check the output voltage of terminal 1 (GL1) when the sensor is tilted forward and rearward.

    Standard voltage:
    Tester Connection
    		Sensor Position
    		Specified Condition
    1 (GL1) - Battery's negative (-) lead
    		Horizontal
    		Approx. 2.25 V
    1 (GL1) - Battery's negative (-) lead
    		Tilted forward
    		Approx. 0.45 to 2.25 V
    1 (GL1) - Battery's negative (-) lead
    		Tilted rearward
    		Approx. 2.25 to 4.05 V
    If the result is not as specified, replace the deceleration sensor.
    HINT:
    1. If voltage drops, the sensor should be replaced with a new one.
    2. When replacing the sensor, it should not be placed upside down.