Dtc C1232 Acceleration Sensor Stuck Malfunction

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

DTC C1232 Acceleration Sensor Stuck Malfunction

DTC C0371 Yaw Rate Sensor (Test Mode DTC)

DTC C1243 Acceleration Sensor Stuck Malfunction

DTC C1245 Acceleration Sensor Output Malfunction

DTC 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.
The yaw rate sensor has a built in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).
If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, the DTCs U0123 (malfunction in CAN communication with the yaw rate sensor) and U0124 (malfunction in CAN communication with the acceleration sensor) are output.
These DTCs are also output when calibration has not been completed.
DTCs C0371 and C1279 can be cleared when the yaw rate and acceleration sensor sends a yaw rate and/or acceleration signal or the Test Mode ends. DTCs C0371 and C1279 are output only in the Test Mode.

DTC Code
DTC Detection Condition
Trouble Area
C1232
At a vehicle speed of 10 km/h (6 mph) or more, either GL1 or GL2 (input signal) does not change for 30 seconds or more.
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor circuit
C1243
While the vehicle speed changes from 30 km/h (19 mph) to 0 km/h (0 mph), the condition that the values of GL1 and GL2 do not change 0.0294 G or more occurs 16 times or more.
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor circuit
C1245
At a vehicle speed of 30 km/h (19 mph) or more, the difference between the forward and backward G calculated from the acceleration sensor value and that calculated from the vehicle speed exceeds 0.35 G for 60 seconds or more.
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor circuit
  3. Sensor installation
C0371
Detected only during Test Mode.
Yaw rate and acceleration sensor
C1279
Detected only during Test Mode.
  1. Yaw rate and acceleration sensor
  2. Sensor installation

WIRING DIAGRAM


Yaris. Ncp93, 131.Brake Control Dynamic Control Systems.Anti-Lock Brake System (For Sedan). Dtc C1232 Acceleration Sensor Stuck Malfunction


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the yaw rate and deceleration sensor, perform the zero point calibration (YARIS_NCP93 RM000000XHR06QX.html).
  2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
When U0123, U0124 and/or U0126 is output together with C1232, C1243 and/or C1245, inspect and repair the trouble areas indicated by U0123, U0124 and/or U0126 first (YARIS_NCP93 RM000000YUO0DIX.html).
1.CHECK DTC

  1. Clear the DTC (YARIS_NCP93 RM000000XHV0BQX.html).

  1. Turn the ignition switch off.

  1. At a speed of 30 km/h (19 mph) or more, drive the vehicle, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.

  1. Turn the ignition switch to ON again and check that no CAN communication system DTC is output (YARIS_NCP93 RM000001D3E00OX.html).

  1. Check if DTCs for zero point calibration of the yaw rate sensor undone (C1210) or for zero point calibration of the acceleration sensor undone (C1336) are output (YARIS_NCP93 RM000000XHV0BQX.html).

    Result
    Result
    		Proceed to
    DTC output (relating to yaw rate and acceleration sensor)
    		A
    DTC output (relating to CAN communication system)
    		B
    DTC (C1210 and/or C1336) output
    		C


B
CHECK CAN COMMUNICATION SYSTEM (YARIS_NCP93 RM000001D3500JX.html)

C
REPAIR CIRCUIT INDICATED BY OUTPUT DTC (YARIS_NCP93 RM000000XHU08DX.html)
A


2.CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

  1. Turn the ignition switch off.

  1. Check that the yaw rate and acceleration sensor has been installed properly (YARIS_NCP93 RM000001BYS012X.html).

    OK:
    The sensor should be tightened to the specified torque.
    The sensor should not be tilted.


NG
INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY (YARIS_NCP93 RM000001BYS012X.html)
OK

REPLACE YAW RATE AND ACCELERATION SENSOR (YARIS_NCP93 RM000001BYV012X.html)