Lumina V6-3.1L VIN J (2000)
Powertrain Control Module: Description and Operation
PCM Controlled Warning Lamps
The PCM controlled lamps are intended to alert the driver to an operating condition which may require immediate attention.
MIL Operation
The Malfunction Indicator Lamp (MIL) is located on the instrument panel and is displayed as CHECK ENGINE lamp.
MIL Function
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The MIL informs the driver that a malfunction has occurred and the vehicle should be taken in for service as soon as possible
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The MIL illuminates during a bulb test and a system test
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A DTC will be stored if a MIL is requested by the diagnostic
MIL Illumination
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The MIL will illuminate with ignition switch ON and the engine not running
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The MIL will turn OFF when the engine is started
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The MIL will remain ON if the self-diagnostic system has detected a malfunction
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The MIL may turn OFF if the malfunction is not present
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If the MIL is illuminated and then the engine stalls, the MIL will remain illuminated so long as the ignition switch is ON.
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If the MIL is not illuminated and the engine stalls, the MIL will not illuminate until the ignition switch is cycled OFF, then ON.
