Oil Pressure Gauge: Description and Operation
ENGINE OIL PRESSURE GAUGEThe engine oil pressure gauge indicates whether the engine oil pressure is low or normal.
The oil pressure gauge is controlled by the IPDM E/R (intelligent power distribution module engine room). Low oil pressure causes oil pressure switch terminal 1 to provide ground to IPDM E/R terminal 42. The IPDM E/R then signals the combination meter (unified meter control unit) via CAN communication lines and a low oil pressure indication is displayed by the oil pressure gauge.