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C1436





BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1436: Yaw Rate Sensor Malfunction
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.





INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate and acceleration sensor, perform zero point calibration .

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 U Code Charts.

PROCEDURE

1. READ VALUE USING TECHSTREAM (YAW RATE AND ACCELERATION SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Select the Data List on the Techstream Data List / Active Test.

ABS/VSC/TRAC

ABS/VSC/TRAC:





(d) Check that the yaw rate and acceleration sensor output value displayed on the Techstream.

Result:





NOTICE:
Check the yaw rate and acceleration sensor signal after replacement Test Mode Procedure.

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

C -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Diagnosis System

B -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal
A -- Continue to next step.

2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

(a) Turn the ignition switch off.

(b) Check that the yaw rate and acceleration sensor has been installed properly Installation.

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 Test Mode Procedure.

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Installation

OK -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal