Circuit/System Description

The powertrain control module (PCM) performs continuous self checks of all internal circuits. If the status of an internal memory circuit within the control module is incorrect, a DTC P0604 sets. If the inputs or outputs from the many central processing units (CPU) within the control module deviate from the standard level, a DTC P0606, P0607, or P060A sets. The control module monitors the accelerator pedal position (APP) sensor 1 signal and sets a DTC P060D when an internal APP sensor fault is detected. The control module monitors the throttle position (TP) sensor 1 signal and the stop lamp switch input for synchronous activity. If a deviation is detected a DTC P060E sets. The control module has several internal clock or timer circuits. The DTC P2610 diagnostic monitors the internal timer circuit responsible for the ignition OFF operation of the evaporative emission (EVAP) system vacuum leak pump. If the there is an error in the control module timer, a DTC P2610 sets.