Yaw Rate Sensor (Test Mode DTC) - Vehicle Stability Control System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1232/32: Stuck in Deceleration Sensor

DTC C1232/32 - Stuck in Deceleration Sensor

DTC C0371/71 - Yaw Rate Sensor (Test Mode DTC)

DTC C1234/34 - Yaw Rate Sensor Malfunction

DTC C1243/43 - Acceleration Sensor Stuck Malfunction

DTC C1244/44 - Open or Short in Deceleration Sensor Circuit

DTC C1245/45 - Acceleration Sensor Output Malfunction

DTC C1279/79 - Deceleration Sensor Output Voltage Malfunction (Test Mode DTC)

DTC C1381/97 - Acceleration Sensor Power Supply Voltage Malfunction

DESCRIPTION

The skid control ECU receives signals from the yaw rate and deceleration sensor via the CAN communication system.
The yaw rate sensor has a built-in deceleration sensor and detects the vehicle's condition using 2 circuits (GL1: G sensor 1, GL2: G sensor 2).
If there is trouble in the bus lines between the yaw rate and deceleration sensor and the CAN communication system, DTC U0123/62 (malfunction in CAN communication with the yaw rate sensor) and U0124/95 (malfunction in CAN communication with the deceleration sensor) are output.
These DTCs are also output when the calibration has not been completed.
DTCs C0371/71 and C1279/79 are deleted when the yaw rate and deceleration sensor sends a yaw rate and/or deceleration signal or test mode ends. DTCs C0371/71 and C1279/79 are output only in test mode.

WIRING DIAGRAM

Refer to DTC C1210/23, C1336/39 C1210.

INSPECTION PROCEDURE
NOTE: When replacing yaw rate and deceleration sensor, perform zero point calibration .
HINT: When DTC U0123/62, U0124/95 or U0126/63 is output together with DTC C1232/32, C1234/34, C1243/43, C1244/44, C1245/45, or C1387/97, inspect and repair the trouble areas indicated by DTC U0123/62, U0124/95 or U0126/63 first.

PROCEDURE

1. CHECK DTC
(a) Clear the DTC .
(b) Turn the ignition switch OFF.
(c) Turn the ignition switch ON again and check that no CAN communication system DTC(s) is output.
(d) Drive the vehicle at a speed of 30 km/h (19 mph) or more and check that no DTCs are output.

Result

C -- END
B -- REPAIR CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. CHECK YAW RATE SENSOR INSTALLATION
(a) Check that the yaw rate sensor has been installed correctly .
OK:
The sensor is tightened to the specified torque.
The sensor is not tilted.
NG -- INSTALL YAW RATE SENSOR CORRECTLY
OK -- Continue to next step.
3. CHECK WIRE HARNESS (YAW RATE SENSOR - BATTERY AND BODY GROUND)
(a) Disconnect the K6 sensor connector.

(b) Measure the voltage of the wire harness side connector.
Standard voltage:

NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE YAW RATE SENSOR