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METERING OIL PUMP INSPECTION

BHE011114100W03

## Metering Oil Pump Voltage Inspection

1. Disconnect the metering oil pump connector (6-pin).

2. Measure the voltage at terminals C and D.

  • If not within the specification, repair or replace the related harnesses.

  Voltage
  Battery voltage [IG-ON, 20°C {68 °F}]

## Metering Oil Pump Resistance Inspection

1. Disconnect the metering oil pump connector (6-pin).

2. Measure the resistance between terminals D-B, D-F, C-A, and C-E using a tester.

  • If not within the specification, replace the metering oil pump.

  Resistance
  30.6-35.6 ohms [20°C {68 °F}]

## Positioning Switch Resistance Inspection

1. Idle the engine.

2. Stop the engine.

3. Disconnect the metering oil pump connector (3-pin).

4. Measure the coil resistance between A-C terminals using a tester.

  • If not within the specification, replace the metering oil pump.

  Resistance
  400 ohms or less [20°C {68 °F}]

## Oil Nozzle Inspection

1. Remove the oil nozzle.

2. Use a vacuum pump to apply a vacuum of 66.5 kPa {0.68 kgf/cm 2, 9.65 psi} or more on A of the oil nozzle and verify that vacuum holds:

  • If the vacuum drops 2.66 kPa {0.027 kgf/cm 2, 0.39 psi} or more in 1 min, replace the oil nozzle.

## Oil Leakage Inspection

1. Idle the engine and keep it.

2. Inspect for oil leakage along the mating surfaces of the metering oil pump and the front cover and where the oil pipe is connected.

  • If there is any malfunction, repair or replace.

## Clogging Inspection

1. Verify that there is no oil clogging in the following parts.

  • If there is any clogging, repair or replace.

  – Oil pipes
  – Oil nozzles
  – Metering oil pump connector bolts (connecting oil pipes and metering oil pump)