Dtc C1436 Yaw Rate Sensor Malfunction

Brake. Corolla. Zre142 Aze141
Brake Control Dynamic Control Systems. Corolla. Zre142 Aze141

DESCRIPTION

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (YAW RATE AND ACCELERATION SENSOR)

CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

DTC C1436 Yaw Rate Sensor Malfunction


DESCRIPTION

The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system.
The yaw rate sensor has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).
If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.
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 acceleration sensor output value is not 0 deg/s.
  2. Abnormal comparison value.
Yaw rate and acceleration sensor

INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate and acceleration sensor, perform zero point calibration (COROLLA_ZRE142 RM000000XHR08KX.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 (COROLLA_ZRE142 RM000000YUO0J7X.html).
1.READ VALUE USING TECHSTREAM (YAW RATE AND ACCELERATION SENSOR)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Select the Data List on the Techstream (COROLLA_ZRE142 RM000000XHW0BYX.html).

    ABS/VSC/TRAC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Yaw Rate Sensor
    		Yaw rate sensor / min.: -128 °/s, max.: 127 °/s
    		Vehicle stationary: 0 °/s
    Right turn: -128 to 0 °/s
    Left turn: 0 to 127 °/s
    		-
    Yaw Rate Sensor2
    		Yaw rate sensor 2 / min.: -128 °/s, max.: 127 °/s
    		Vehicle stationary: 0 °/s
    Right turn: -128 to 0 °/s
    Left turn: 0 to 127 °/s
    		-

  1. Check that the yaw rate and acceleration sensor output value displayed on the Techstream.

    Result:

    Result
    		Proceed to
    NG (The yaw rate and acceleration sensor output value is 0 deg/s when the vehicle is stationary, but the value fluctuates when turning)
    		A
    NG (The yaw rate and acceleration sensor output value is not 0 deg/s when the vehicle is stationary)
    		B
    OK
    		C
    NOTICE:
    Check the yaw rate and acceleration sensor signal after replacement (COROLLA_ZRE142 RM000000XHT0ATX.html).
    HINT:
    If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (COROLLA_ZRE142 RM000000XHN0DUX.html).


B
REPLACE YAW RATE AND ACCELERATION SENSOR (COROLLA_ZRE142 RM000003D8S00IX.html)

C
CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (COROLLA_ZRE142 RM000000XHP0EKX.html)
A


2.CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

  1. Turn the ignition switch off.

  1. Check that the yaw rate and acceleration sensor has been installed properly (COROLLA_ZRE142 RM000003D8Q00MX.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 acceleration sensor signal after replacement (COROLLA_ZRE142 RM000000XHT0ATX.html).
    HINT:
    If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (COROLLA_ZRE142 RM000000XHN0DUX.html).


NG
INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY (COROLLA_ZRE142 RM000003D8Q00MX.html)
OK

REPLACE YAW RATE AND ACCELERATION SENSOR (COROLLA_ZRE142 RM000003D8S00IX.html)