Oil Pump: Testing and Inspection

METERING OIL PUMP

Malfunctions related to the metering oil pump are separated into the electrical component problems and the mechanical component problems.
Electrical Component Related Problem
1. Check the malfunction code with the SST (49 H018 9A1)
2. Check if the malfunction code No.20, 27, or 37 appears.
3. If code No. 20, 27 or 37 appears, check metering oil pump with diagnosis chart below.






Diagnosis Chart






Control Unit Terminal

INSPECTION






1. Metering oil pump control system.






2. Metering oil pump position sensor






Mechanical Component Related Problem
Excessive oil consumption is caused by metering oil pump malfunction. Before replacing the metering oil pump, first perform the oil leakage inspection in Troubleshooting guide and electrical component inspection.






Oil nozzle

1. Remove the housing oil nozzles from the rotor housing and remove the manifold oil nozzle from the intake manifold.
2. Check that air passes in only one direction. If not so, replace the oil nozzle.