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SERIES 50 IMPROPER ENGINE OIL LEVEL

To determine if improper engine oil level is causing low oil pressure, perform the following steps: ‪

  1. Ensure that the vehicle is parked on level ground.
  2. Check the engine oil level; refer to Section .
    1. If the engine oil level is correct, check lubricating oil viscosity, refer to Section .
    2. If the engine oil level is incorrect, refer to Section .

Low Engine Oil Level Resolution

Perform the following steps for low engine oil level: ‪

  1. Fill engine oil pan to correct level; refer to Section .
  2. Verify low engine oil resolution; refer to Section .
Test for Proper Engine Oil Level

Perform the following to determine if properly filled oil pan resolved low oil pressure: ‪

  1. Install the Diagnostic Data Reader to the vehicles Display Data Line Adaptor, see Figure 24089 ; refer to OEM guidelines.

    Typical Display Data Line Adaptor

  2. Start and vary engine speed between 1800-2100 r/min.
  3. Visually examine the DDR for oil pressure reading.
    1. If the DDR indicates oil pressure greater than 241 kPa (35 lb/in.2 ), at 1800 r/min, shut down the engine and disconnect the DDR. No further troubleshooting is required.
    2. If the DDR indicates oil pressure less than 241 kPa (35 lb/in.2 ), at 1800 r/min, shut down the engine and disconnect the DDR. Check lubricating oil viscosity; refer to Section .