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 a malfunction in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (Lost
Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.
These DTCs are also output when calibration has not been completed.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the yaw rate and acceleration sensor, perform zero point calibration See: Brakes and Traction Control/Antilock
Brakes / Traction Control Systems/Testing and Inspection/Programming and Relearning.
HINT
When DTC U0123, U0124 and/or U0126 is output together with DTC C1436, inspect and repair the trouble areas indicated by
DTC U0123, U0124 and/or U0126 first See: U Code Charts/U0073.
PROCEDURE
1. READ VALUE USING TECHSTREAM (YAW RATE AND ACCELERATION SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Select the Data List on the Techstream See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Data List / Active Test.
ABS/VSC/TRAC
(d) Check that the yaw rate and acceleration sensor output value displayed on the Techstream.
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