If the 4WD ECU can't read some data through CAN communication or it has an error in the circuit, it sets U0001 and lets a warning lamp turn on.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
CAN Signal Check | 1. Poor connection 2. Open or short in CAN communication line 3. Error in each module |
Enable conditions |
•
IG KEY " ON" or Engine " ON " | |
Threshold value |
•
CAN BUS OFF | |
Detecting time |
•
1 second |
