Conditions for Clearing the MIL/DTC
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
- The PCM receives the clear code command from the scan tool.
DTC P0520
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Instrument Cluster Schematics | |||
| 1 | Did you perform the Diagnostic System Check - Instrument Cluster? | Go to Step 2 | Go to Diagnostic System Check - Instrument Cluster |
| 2 |
IMPORTANT:
Do not turn the key to the crank position or engage the starter at any time during diagnosis.
|
Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
| 3 |
|
Go to Step 6 | Go to Step 4 |
| 4 | Test the EOP signal circuit for an open, for a high resistance, or for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 9 | Go to Step 5 |
| 5 | Inspect for poor connections at the powertrain control module (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 9 | Go to Step 8 |
| 6 | Inspect for poor connections at 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 9 | Go to Step 7 |
| 7 | Replace the EOP switch. Refer to Engine Oil Pressure Sensor and/or Switch Replacement
in Engine Mechanical - 3.4L. Did you complete the replacement? |
Go to Step 9 | - |
| 8 |
IMPORTANT:
Program the replacement PCM. Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement
in Engine Controls - 3.4L.Did you complete the replacement? |
Go to Step 9 | - |
| 9 |
|
Go to Step 2 | System OK |