DTC U0114
DTC U0114: F-CAN Malfunction (Powertrain Control Module (PCM)-i-VTM Control Unit)
General Description
Without CAN gateway
With CAN gateway
The controller area network (CAN) transmits/receives pulsing signals to/from the control modules simultaneously by using two signal lines (H line and L line).
When the powertrain control module (PCM) does not receive signals from the i-VTM control unit via the F-CAN lines for a set time, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 1 second or more |
| DTC Type | One drive cycle, MIL off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [BATTERY] | 10.0 V | - |
[ ]: HDS Parameter
Malfunction Threshold
The PCM does not receive any signals via the F-CAN lines for at least 1 second.
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- F-CAN circuit F-CAN_H* 3 (F-CAN A_H)* 4, * 5 (F-CAN B_H)* 6 line open
- F-CAN circuit F-CAN_L* 3 (F-CAN A_L)* 4, * 5 (F-CAN B_L)* 6 line open
- F-CAN circuit F-CAN_H* 3 (F-CAN A_H)* 4, * 5 (F-CAN B_H)* 6 line short to ground
- F-CAN circuit F-CAN_L* 3 (F-CAN A_L)* 4, * 5 (F-CAN B_L)* 6 line short to ground
- i-VTM control unit failure (include fuse blown)
- PCM internal circuit failure
*3: Without CAN gateway (6-Speed A/T)*4: With CAN gateway (6-Speed A/T)*5: Without CAN gateway (9-Speed A/T)*6: With CAN gateway (9-Speed A/T)
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.