DESCRIPTION The driving
support ECU assembly uses the millimeter wave radar sensor assembly to
detect objects in front of the vehicle. Based on signals from the
millimeter wave radar sensor assembly, the driving support ECU assembly
sends pre-collision system control operation signals. 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 the driving support ECU assembly
is detected for approximately 5 seconds. |
CAN communication system | |
U0125 | Lost Communication with Yaw Rate Sensor Module |
When
the engine switch is on (IG), a communication error between the yaw
rate sensor (airbag ECU assembly) and the driving support ECU assembly
is detected for approximately 1 second. |
CAN communication system | |
U0126 | Lost Communication with Steering Angle Sensor Module |
When
the engine switch is on (IG), a communication error between the
steering sensor and the driving support ECU assembly is detected for
approximately 4 seconds. | CAN communication system | |
U0129 | Lost Communication with Brake System Control Module |
When
the engine switch is on (IG), a communication error between the skid
control ECU (brake actuator assembly) and the driving support ECU
assembly is detected for approximately 3 seconds. |
CAN communication system | |
U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module |
When
the engine switch is on (IG), a communication error between the
combination meter assembly and the driving support ECU assembly is
detected for approximately 3 seconds. |
CAN communication system | PROCEDURE
(a) Clear the DTCs. Body Electrical > Pre-Collision 2 > 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. Body Electrical > Pre-Collision 2 > Trouble Codes
|
Result | Proceed to | |
DTC U0100, U0125, U0126, U0129 and U0155 are not output |
A | | DTC U0100, U0125, U0126, U0129 or U0155 is output |
B |
| A |
 | USE SIMULATION METHOD TO CHECK |
| B |
| GO TO CAN COMMUNICATION SYSTEM | |
