Malibu V6-191 3.1L VIN M SFI (1997)
Oil Pressure Warning Lamp/Indicator: Description and Operation
The Oil Pressure indicator (red) will be illuminated when the Powertrain Control Module (PCM) transmits a Class 2 message to the Body Function
Controller (BFC) indicating there is a Low Oil Pressure condition. The Body Function Controller (BFC) will then command the Oil Pressure indicator
ON over the Serial Peripheral Interface (SPI) interface to the Instrument Cluster. In the event of a loss of Class 2 serial data the Oil Pressure indicator
will not illuminate unless the indicator was illuminated when the event occurred. That is the indicator will remain in its current state for the ignition cycle
when the loss occurred. In the event of an Serial Peripheral Interface (SPI) data link failure the Oil Pressure indicator will not illuminate unless the
indicator was illuminated prior to the Serial Peripheral Interface (SPI) data link failure.
