DTC P100C: General Description
The EVTS line and the EVTM line of the powertrain control module (PCM) receive the electric VTC motor revolution speed and the electric VTC motor revolution direction data and output pulses accordingly. The EVTM outputs the same pulse as the EVTS when the electric VTC motor revolution direction is normal and outputs reverse pulse of the EVTS when reversing. The PCM detects a malfunction and stores a DTC when the EVTS pulse number and the EVTD pulse number sent from the electric VTC motor are different continuously for the prescribed time.