Dtc C1436 Yaw Rate Sensor Malfunction

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (YAW RATE SENSOR)

CHECK YAW RATE AND DECELERATION SENSOR INSTALLATION

DTC C1436 Yaw Rate Sensor Malfunction


DESCRIPTION

The skid control ECU receives signals from the yaw rate and deceleration sensor via the CAN communication system.
The yaw rate sensor has a built-in deceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).
If there is trouble in the bus lines between the yaw rate and deceleration sensor and the CAN communication system, DTCs U0123 (malfunction in CAN communication with the yaw rate sensor) and U0124 (malfunction in CAN communication with the acceleration sensor) are stored.
These DTCs are also output when calibration has not been completed.

DTC Code
DTC Detection Condition
Trouble Area
C1436
Either of the following is detected:
  1. With the vehicle stationary, the yaw rate and deceleration sensor output value is not 0 deg/s.
  2. Abnormal comparison value.
Yaw rate and deceleration sensor

WIRING DIAGRAM

Refer to DTCs C1232, C1243 and C1245 (RAV4_ACA30 RM000001RFV02MX_02.html).

INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate sensor assembly, perform zero point calibration (RAV4_ACA30 RM000001K1O00SX.html).
HINT:
When U0123, U0124 and/or U0126 is output together with C1436, inspect and repair the trouble areas indicated by U0123, U0124 and/or U0126 first (RAV4_ACA30 RM000000YUO048X.html).
1.READ VALUE USING INTELLIGENT TESTER (YAW RATE SENSOR)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG).

  1. Select the Data List mode on the intelligent tester (RAV4_ACA30 RM000000ONK01EX.html).

    ABS/VSC/TRC:
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Yaw Rate Sensor
    		Yaw rate sensor 1 reading / min.: -128 deg/s, max.: 127 deg/s
    		Vehicle stationary: 0 deg/s
    Right turn: -128 to 0 deg/s
    Left turn: 0 to 127 deg/s
    		-

  1. Check that the yaw rate and deceleration sensor output value displayed on the intelligent tester.

    Result:

    Result
    		Proceed to
    NG
    		The yaw rate and deceleration sensor output value is 0 deg/s when the vehicle is stationary, but the value fluctuates when turning.
    		A
    The yaw rate and deceleration sensor output value is not 0 deg/s when the vehicle is stationary.
    		B
    OK
    		C
    NOTICE:
    Check the yaw rate and deceleration sensor signal after replacement (RAV4_ACA30 RM0000022CZ007X.html).
    HINT:
    If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (RAV4_ACA30 RM000000OS701UX.html).


B
REPLACE YAW RATE SENSOR ASSEMBLY (RAV4_ACA30 RM000001XVQ009X.html)

C
CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (RAV4_ACA30 RM00000135201PX.html)
A


2.CHECK YAW RATE AND DECELERATION SENSOR INSTALLATION

  1. Turn the ignition switch off.

  1. Check that the yaw rate and deceleration sensor has been installed properly (RAV4_ACA30 RM000001XVO00CX_01_0001.html).

    OK:
    The sensor should be tightened to the specified torque.
    The sensor should not be installed in a tilted position.
    NOTICE:
    Check the yaw rate and deceleration sensor signal after replacement (RAV4_ACA30 RM0000022CZ007X.html).
    HINT:
    If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (RAV4_ACA30 RM000000OS701UX.html).


NG
INSTALL YAW RATE AND DECELERATION SENSOR CORRECTLY (RAV4_ACA30 RM000001XVO00CX.html)
OK

REPLACE YAW RATE SENSOR ASSEMBLY (RAV4_ACA30 RM000001XVQ009X.html)