These DTCs are stored when a communication malfunction occurs between ECUs that
perform pre-collision system control.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
U0100
|
Lost Communication with ECM / PCM "A"
|
When the vehicle is being driven at a speed of 5 km/h (4 mph) or more,
a communication error between the ECM and millimeter wave radar sensor assembly
is detected for approximately 4 seconds.
|
- CAN communication system
- ECM
- Millimeter wave radar sensor assembly
|
U0125
|
Lost Communication with Yaw Rate Sensor Module
|
When the vehicle is being driven at a speed of 5 km/h (4 mph) or more,
a communication error between the yaw rate sensor (airbag sensor assembly)
and millimeter wave radar sensor assembly is detected for approximately
1 second.
|
- CAN communication system
- Yaw rate sensor (Airbag sensor assembly)
- Millimeter wave radar sensor assembly
|
U0126
|
Lost Communication with Steering Angle Sensor Module
|
When the ignition switch is ON, a communication error between the spiral
with sensor cable sub-assembly and millimeter wave radar sensor assembly
is detected for approximately 1 second.
|
- CAN communication system
- Spiral with sensor cable sub-assembly
- Millimeter wave radar sensor assembly
|
U0129
|
Lost Communication with Brake System Control Module
|
When the ignition switch is ON, a communication error between the skid
control ECU (brake actuator assembly) and millimeter wave radar sensor assembly
is detected for approximately 6 seconds.
|
- CAN communication system
- Skid control ECU (Brake actuator assembly)
- Millimeter wave radar sensor assembly
|
U0137
|
Lost Communication with Trailer Brake Control Module
|
When the ignition switch is ON, a communication error between the trailer
brake control ECU (brake control with bracket relay) and millimeter wave
radar sensor assembly is detected for approximately 3 seconds.
|
- CAN communication system
- Trailer brake control ECU (Brake control with bracket relay)
- Millimeter wave radar sensor assembly
|
(a) Clear the DTCs.
(b) Make sure that the DTC detection conditions are met.
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.