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 C1381, inspect and repair the trouble areas indicated by
DTC U0123, U0124 and/or U0126 first See: U Code Charts/U0073.
PROCEDURE
1. INSPECT YAW RATE AND ACCELERATION SENSOR (IG TERMINAL)
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
(b) Disconnect the yaw rate and acceleration sensor connector.
(c) Turn the engine switch on (IG).
(d) Measure the voltage according to the value(s) in the table below.
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