C1232

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1232,C0371,C1243,C1245,C1279: Acceleration Sensor Stuck Malfunction
C1279 - Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)

DESCRIPTION

The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system.

If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (yaw rate sensor communication trouble) and U0124 (acceleration sensor communication trouble) are stored.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
* When replacing the yaw rate and acceleration sensor, perform calibration Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON.

(d) Check if DTCs U0073, U0123, C1210 and/or C1336 are output Reading and Clearing Diagnostic Trouble Codes.

Result

C -- REPAIR CIRCUIT INDICATED BY OUTPUT DTC Vehicle Stability Control System

B -- GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Initial Inspection and Diagnostic Overview
A -- Continue to next step.

2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

(a) Check that the yaw rate and acceleration sensor is installed properly.

OK:

The sensor is tightened to the specified torque. The sensor is not tilted.

NG -- INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Installation
OK -- Continue to next step.

3. CHECK TERMINAL VOLTAGE AND RESISTANCE (IG, GND)

(a) Disconnect the F36 yaw rate and acceleration sensor connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

Result

C -- REPAIR OR REPLACE HARNESS OR CONNECTOR

B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

A -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal