Detection Condition

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

If PCM detects any of the following conditions, PCM determines throttle circuit has malfunction.

Default throttle angle that PCM memorized and throttle angle with ET control relay OFF is not much
PCM detects big voltage difference between from ET control relay and from main relay
PCM internal malfunction
Voltage from ET control relay is too high or too low

This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction conditions in two consecutive drive cycles or in one drive cycle while DTC for same malfunction has been stored in PCM. PENDING CODE is available if PCM detects malfunction condition during first drive cycle. FREEZE FRAME DATA is available. DTC is stored in PCM memory.