Troubleshooting

The engine is equipped with an oil pressure switch.
While the engine is running and oil pressure is
detected, the switch will be open. When no oil
pressure is detected, the switch will be closed.
Table 106
Oil Pressure Switch States and Diagnostics Summary
Engine Condition
Oil Pressure Switch
State
Active Diagnostic
Code
Not running Closed Normal condition
(no oil pressure
detected)
Running Open Normal condition (oil
pressure detected)
Not running Open 100-2
Running Closed 100-17
Note: If a 100-17 diagnostic code is active, refer to
Troubleshooting, “Oil Pressure Is Low” before
returning to this procedure.
Illustration 71 g03636596
Schematic diagram for the oil pressure switch
Not all connectors are shown. Refer to the appropriate Electrical Schematic.
Illustration 72 g02710319
View of the pin location on the P2 connector for the
oil pressure switch
(6) Engine oil pressure switch
232 UENR0612-07
Circuit Tests
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