Detection Condition

PCM monitors Variable Tumble Control System (VTCS) solenoid valve control signal at PCM 30-pin harness connector terminal "4T". If PCM turns VTCS solenoid valve off but voltage at PCM 30-pin harness connector terminal "4T" still remains low, PCM determines VTCS solenoid valve circuit has malfunction. 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.