Dtc C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode Dtc)

Brake. Corolla. Zre142 Aze141
Brake Control Dynamic Control Systems. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

INSPECT YAW RATE AND ACCELERATION SENSOR (IG TERMINAL)

INSPECT YAW RATE AND ACCELERATION SENSOR (GND TERMINAL)

DTC C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)


DESCRIPTION

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

DTC Code
DTC Detection Condition
Trouble Area
C1279
Detected only during Test Mode.
  1. Sensor installation
  2. Yaw rate and acceleration sensor

WIRING DIAGRAM

Refer to DTCs C1232, C1243 and C1245 (Link).

INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate and acceleration sensor, perform zero point calibration (COROLLA_ZRE142 RM000000XHR08KX.html).
1.CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

  1. Check that the yaw rate and acceleration sensor has been installed properly (COROLLA_ZRE142 RM000003D8Q00MX.html).

    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 ACCELERATION SENSOR CORRECTLY (COROLLA_ZRE142 RM000003D8Q00MX.html)
OK


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


    Corolla. Zre142 Aze141.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode Dtc)

  1. Make sure that there is no looseness at the locking part and the connecting part of the connector.

  1. Disconnect the yaw rate and acceleration sensor connector.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    E97-4 (IG) - Body ground
    		Ignition switch ON
    		11 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG CIRCUIT)
OK


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


    Corolla. Zre142 Aze141.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode Dtc)

  1. Turn the ignition switch off.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E97-1 (GND) - Body ground
    		Always
    		Below 1 Ω
    NOTICE:
    Check the yaw rate and acceleration sensor signal after replacement (COROLLA_ZRE142 RM000000XHT0ATX.html).


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

REPLACE YAW RATE AND ACCELERATION SENSOR (COROLLA_ZRE142 RM000003D8S00IX.html)