Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Instrument Cluster Schematics | ||||
1 | Did you review the system operation and perform the necessary inspections? | -- | Go to Step 2 | |
2 | Start the engine. Does the engine oil pressure (EOP) gage display that the engine oil pressure is within the normal operating range? | 10-70 psi (69-483 kPa) | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the EOP gage display the specified value or less? | 0 psi (0 kPa) | Go to Step 4 | Go to Step 6 |
4 |
Does the EOP gage display at or above the specified value? | 80 psi (550 kPa) | Go to Step 7 | Go to Step 5 |
5 | Test the signal circuit of the EOP sensor for an open, for a high resistance, or for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 9 |
6 | Test the signal circuit of the EOP sensor for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 9 |
7 | Inspect for a high resistance or for a poor connection at the case ground of the EOP sensor. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 8 |
8 | Inspect for poor connections at the harness connector of the EOP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 10 |
9 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 11 |
10 | Replace the EOP sensor. Refer to Duramax® 7800 Medium Duty Diesel Engine Manual. Did you complete the replacement? | -- | Go to Step 12 | -- |
11 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? | -- | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
