C1279

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C0371,C1279: Yaw Rate Sensor (Test Mode DTC)
C1279 - Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)

DESCRIPTION

DTCs C0371 and C1279 can be cleared when the yaw rate and deceleration sensor sends a yaw rate and/or deceleration signal or when Test Mode ends. DTCs C0371 and C1279 are output only in Test Mode.





WIRING DIAGRAM

Refer to DTCs C1232, C1243 and C1245 C1232.

INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate sensor assembly, perform zero point calibration Component Tests and General Diagnostics.

PROCEDURE

1. CHECK YAW RATE AND DECELERATION SENSOR INSTALLATION

(a) Check that the yaw rate and deceleration 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.

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

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

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





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

(c) Turn the ignition switch to ON.

(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 DECELERATION SENSOR (GND TERMINAL)

(a) Turn the ignition switch off.





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

Standard Resistance:





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

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

OK -- REPLACE YAW RATE SENSOR ASSEMBLY Removal