Detection Condition

The PCM monitors ECT sensor signal at PCM 30-pin harness connector terminal "1M" after engine is started and engine is cold. If ECT voltage does not reach expected temperature for specified period, PCM determines that it has taken an excessive amount of time for engine coolant temperature to reach temperature necessary to start closed-loop fuel control. 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.