Schematic Reference: Instrument Cluster Schematics

Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views , Powertrain Control Module Connector End Views in Engine Controls 2.8L, or Powertrain Control Module Connector End Views in Engine Controls 3.5L

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Start the engine.

Does the engine oil pressure (EOP) gage display at or below 0 psi (0 kPa)?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

1. Install a scan tool.
2. Turn the ignition ON.
3. With the scan tool, observe the Engine Oil Pressure Switch parameter in the powertrain control module (PCM) Engine Data 3 data list.

Does the Engine Oil Pressure Switch parameter display Ok?

Go to Step 10

Go to Step 4

1. Turn the ignition OFF.
2. Disconnect the EOP switch.
3. Start the engine.
4. With the scan tool, observe the Engine Oil Pressure Switch parameter.

Does the Engine Oil Pressure Switch parameter display Ok?

Go to Step 6

Go to Step 5

Test the signal circuit of the EOP switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 7

Inspect for poor connections at the harness connector of the EOP switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 8

Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 9

Replace the EOP switch. Refer to Engine Oil Pressure Sensor and/or Switch Replacement in Engine Mechanical - 2.8L or Engine Oil Pressure Sensor and/or Switch Replacement in Engine Mechanical - 3.5L.

Did you complete the replacement?

Go to Step 11

--

Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 11

--

Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 11

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2