DTC P100D
DTC P100D: Electric VTC Motor Power Relay Circuit Stuck On
General Description
The EVTM line of the powertrain control module (PCM) is installed to receive diagnostic signal from the electric VTC motor. When the electric VTC relay is off under normal conditions, the EVTM line output from the electric VTC motor is 100 % (+/-5 %) duty. When in the vehicle OFF (LOCK) mode, the PCM detects a malfunction and stores a DTC when the EVTM line output is anything other than 100 % (+/-5 %) duty continuously for the prescribed time though the electric VTC relay is turned off.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 5 seconds or more |
| DTC Type | One drive cycle, MIL off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage [Battery] | 10.5 V | - |
[ ]: HDS Parameter
Malfunction Threshold
When the EVTM output is other than 100 % (+/-5 %) duty continuously for 5 seconds or more though the PCM has turned off the electric VTC relay in the vehicle OFF (LOCK) mode.
Possible Cause
- Electric VTC motor VB2 (EVTC) line short to power
- PCM EVTC RLY CL- line short to ground
- Electric VTC relay stuck on failure
- Electric VTC motor EVTM line short to ground
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.