Detection Condition

PCM monitors VTCS shutter valve position using VTCS shutter valve switch. If PCM turns VTCS solenoid valve off but VTCS position still remains closed (VTCS shutter valve switch is on), PCM determines that VTCS shutter valve has been stuck closed. This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition 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.