DTC 100-2 - Engine Oil Pressure OORH at Stall

PROCEDURE OR ACTION:
1. Ensure truck power is OFF.
2. Disconnect the indicated connectors at sensor and VSM or applicable ECU.
3. Change DMM to volts scale.
4. At the sensor harness connector, measure the voltage across the sensor signal wire (+) and the negative (−) terminal of the battery.
Is voltage approximately system voltage?
YES: The signal wire is shorted to an unswitched battery source. Refer to the appropriate Diagrams and Schematics YRM for unswitched battery voltage sources. Locate and repair/replace shorted wire/connection. Refer to the appropriate Wiring Harness Repair YRM.
NO: Go to Step 5.
5. Turn truck power ON and repeat Step 3.
Is voltage approximately system voltage?
YES: The signal wire is shorted to a switched battery source. Refer to the appropriate Diagrams and Schematics YRM for switched battery voltage sources. Repair or replace shorted wire. Refer to the appropriate Wiring Harness Repair YRM.
NO: Go to Cause E.