C1232

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1232, C1243, C1245: Acceleration Sensor Stuck Malfunction
C1245 - Acceleration Sensor Output Malfunction

DESCRIPTION

* The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system (w/ VDIM).

* The skid control ECU receives signals from the yaw rate and acceleration sensor (built into skid control ECU) (w/o VDIM).

The yaw rate sensor has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).

If there is a malfunction 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 (w/ VDIM).

These DTCs are also output when calibration has not been completed.





WIRING DIAGRAM









INSPECTION PROCEDURE

NOTICE:
* When replacing the brake actuator assembly or yaw rate and acceleration sensor, perform zero point calibration and store system information Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT
When DTC U0123, U0124 and/or U0126 is output together with DTC C1232, C1243, and/or C1245, inspect and repair the trouble areas indicated by DTC U0123, U0124 and/or U0126 first Vehicle Stability Control System.

PROCEDURE

1. CHECK VEHICLE EQUIPMENT

(a) Confirm whether the vehicle is w/ VDIM or w/o VDIM.

Result





B -- CHECK BRAKE ACTUATOR ASSEMBLY
A -- Continue to next step.

2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

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

OK:

The sensor is tightened to the specified torque.

The sensor is not 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

3. CHECK BRAKE ACTUATOR ASSEMBLY

(a) Check that the brake actuator assembly has been installed properly Installation.

OK:

The brake actuator assembly is tightened to the specified torque.

The brake actuator assembly is not installed in a tilted position.

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 BRAKE ACTUATOR ASSEMBLY CORRECTLY Installation

OK -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal