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 C1232, C1243, and/or C1245, inspect and repair the trouble
areas indicated by DTC U0123, U0124 and/or U0126 first See: U Code Charts/U0073.
PROCEDURE
1. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION
(a) Check that the yaw rate and acceleration sensor has been installed properly See: Brakes and Traction Control/Antilock Brakes /
Traction Control Systems/Acceleration/Deceleration Sensor/Service and Repair/Installation.
OK:
The sensor is tightened to the specified torque.
The sensor is not installed in a tilted position.
NOTICE:
Check the yaw rate and acceleration sensor signal after replacement See: Brakes and Traction Control/Antilock Brakes /
Traction Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Test Mode Procedure.
HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next
step See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and Inspection/Symptom Related
Diagnostic Procedures/Problem Symptoms Table.
NG -- INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY See: Brakes and Traction Control/Antilock
Brakes / Traction Control Systems/Acceleration/Deceleration Sensor/Service and Repair/Installation
OK -- REPLACE YAW RATE AND ACCELERATION SENSOR See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Acceleration/Deceleration Sensor/Service and Repair/Removal
Up to 08/2009
BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: C1203,C1270: ECM
Communication Circuit Malfunction
DESCRIPTION
The circuit is used to send TR(A)C and VSC control information from the skid control ECU to the ECM, and engine control information from the
ECM to the skid control ECU.
If the skid control ECU is replaced or if the memory is cleared, system information such as the destination or vehicle type will be unconfirmed. After
switching to Test Mode, the skid control ECU performs initialization when starting communication with the vehicle, and stores the system
information in 2 or 3 seconds.
DTC C1270 will be cleared when the initialization is completed normally or when Test Mode ends. DTC C1270 is output only in Test Mode.
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