DESCRIPTION The driving support ECU assembly communicates with each sensor and ECU via CAN communication.
If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | | U0100 |
Lost Communication with ECM / PCM "A" |
While
the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar
cruise control system is operating, a communication error between the
ECM and driving support ECU assembly is detected for approximately 1
second or more. |
- CAN communication system
- ECM
- Driving support ECU assembly
| Does not come on | |
U0125 | Lost Communication with Yaw Rate Sensor Module |
While
the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar
cruise control system is operating, a communication error between the
yaw rate and acceleration sensor (airbag sensor assembly) and driving
support ECU assembly is detected for approximately 1 second or more. |
- CAN communication system
- Yaw rate and acceleration sensor (Airbag sensor assembly)
- Driving support ECU assembly
| Does not come on | |
U0126 | Lost Communication with Steering Angle Sensor Module |
While
the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar
cruise control system is operating, a communication error between the
steering sensor and driving support ECU assembly is detected for
approximately 1 second or more. |
- CAN communication system
- Steering sensor
- Driving support ECU assembly
| Does not come on | |
U0129 | Lost Communication with Brake System Control Module |
While
the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar
cruise control system is operating, a communication error between the
skid control ECU (brake actuator assembly) and driving support ECU
assembly is detected for approximately 2.5 seconds or more. |
- CAN communication system
- Skid control ECU (Brake actuator assembly)
- Driving support ECU assembly
| Does not come on | PROCEDURE
(a) Clear the DTCs. Powertrain > Radar Cruise2 > Clear DTCs
(b) Make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs. Powertrain > Radar Cruise2 > Trouble Codes
|
Result | Proceed to | |
DTC U0100, U0125, U0126 and U0129 are not output |
A | | DTC U0100, U0125, U0126 or U0129 is output |
B |
| A |
 | USE SIMULATION METHOD TO CHECK |
| B |
| GO TO CAN COMMUNICATION SYSTEM | |
