Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P100D: 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 circuit 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 circuit is turned off.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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