C1279

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1279: Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)


DESCRIPTION

DTC C1279 can be cleared when the yaw rate and acceleration sensor sends an acceleration signal or when Test Mode ends. DTC C1279 is output only in Test Mode.





WIRING DIAGRAM

Refer to DTCs C1232, C1243 and C1245 C1232.

INSPECTION PROCEDURE

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

PROCEDURE

1. 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.

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

2. INSPECT YAW RATE AND ACCELERATION SENSOR (IG TERMINAL)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.





(b) Disconnect the yaw rate and acceleration sensor connector.

(c) Turn the engine switch on (IG).

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

Standard Voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (IG CIRCUIT)
OK -- Continue to next step.

3. INSPECT YAW RATE AND ACCELERATION SENSOR (GND TERMINAL)

(a) Turn the engine switch off.





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

Standard Resistance:





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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)

OK -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal