P0522

DTC P0522

CIRCUIT DESCRIPTION
The engine oil pressure (EOP) sensor changes resistance based on engine oil pressure. The PCM monitors the signal circuit of the EOP sensor. When the engine oil pressure is high, the sensor resistance is high, and the PCM senses a high signal voltage. When the engine oil pressure is low, the sensor resistance is low, and the PCM senses a low signal voltage. The PCM sends the engine oil pressure information to the IPC via the class 2 serial data circuit.

CONDITIONS FOR RUNNING THE DTC
- The engine is running.
- DTC P1635 is not present.

CONDITIONS FOR SETTING THE DTC
- The PCM detects that the EOP sensor signal circuit is less than 0.4 volts.
- The above condition is present for greater than 9 seconds.

ACTION TAKEN WHEN THE DTC SETS
- The PCM records the operating conditions at the time the diagnostic test fails. The PCM displays this information in the Failure Records on the scan tool.
- The instrument panel cluster (IPC) illuminates the check gages indicator.

CONDITIONS FOR CLEARING THE DTC
- The DTC becomes history when the conditions for setting the DTC are no longer present.
- The history DTC clears after 40 malfunction free warm-up cycles.
- The PCM receives a clear code command from the scan tool.

DIAGNOSTIC AIDS
- Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

TEST DESCRIPTION

Steps 1-3:

Steps 4-8:

Steps 9-12:

The number below refers to the step number on the diagnostic table.
4. This step tests for the proper operation of the circuit in the high voltage range.