Section 5 – SR-2 Diagnostics
66 LOW ENGINE OIL LEVEL
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Alarm Type
Log or Shutdown Alarm
Associated Alarm
Codes
Component Description and Location
The switch is located in front of the oil filter, on the top of the oil pan. The switch is open with full oil level and
closed with low oil level.
Circuit Description
The wiring is located in the Main Harness via the OLS-01 and CHOL circuits.
How Alarm is Set
1. If the engine oil level switch indicates low engine oil for 3 minutes, Alarm Code 66 is set as a Shutdown
alarm.
2. If Alarm Code 66 is manually cleared and the engine oil level is still low, Alarm Code 66 is reset as a
Shutdown Alarm.
How Alarm is Cleared
Alarm self-clears if the oil level input is good for 3 seconds.
Considerations
Becomes a log alarm if unit is switched to electric mode.
Diagnostic Procedure
1. Check and adjust the engine oil level.
2. Check the switch with an ohmmeter. It should be open when the oil level is satisfactory.
3. Check the harness wires OLS-01 and CHOL with an ohmmeter for continuity, per Service Procedure H04A.
67 CHECK LIQUID LINE SOLENOID CIRCUIT
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Alarm Type
Check Alarm or Shutdown Alarm (Pretrip Only)
Considerations
Not implemented – future use.
5-60
02 February 2005
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