DESCRIPTION This DTC is detected if communication is lost between the ECM and skid control ECU. |
DTC Code | DTC Detection Condition
- Diagnosis Condition
- Malfunction Status
- Malfunction Time
- Other
| Trouble Area | |
U0100 |
- Ignition switch ON
- Communication is lost between ECM and 4 wheel drive control ECU
- 5 seconds or more
- 1 trip detection logic
| CAN communication system | |
U0122 |
- Ignition switch ON
- Communication is lost between skid control ECU and 4 wheel drive control ECU
- 0.7 seconds or more
- 1 trip detection logic
| CAN communication system | CAUTION / NOTICE / HINT
NOTICE:
- When the data in the ECM or skid control ECU is being overwritten, the
indicator light may rapidly blink due to the 4 wheel drive control ECU
detecting a communication malfunction (blinks at 0.25 second intervals
(0.25 seconds on and 0.25 seconds off)), but this is not a malfunction.
- Clear all DTCs, since DTCs are stored after the data in the ECM or skid control ECU is overwritten.
PROCEDURE (a) Clear the DTCs (See page
 ). (b) Check if the same DTCs are output (See page
). Result |
Result | Proceed to | |
DTC is output | A | |
DTC is not output | B |
| A |
 | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
| B |
| USE SIMULATION METHOD TO CHECK | |
