P0522-ENGINE OIL PRESSURE SWITCH CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W

When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The PCM detects that the Oil Pressure Sensor input voltage is below the minimum acceptable value.

(G6) EOP SIGNAL CIRCUIT SHORTED TO GROUND

(G6) EOP SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Diagnostic Test

1. DTC IS ACTIVE

Start the engine and allow it to reach normal operating temperature.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

Go to 2

Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

2. (G6) EOP SIGNAL CIRCUIT SHORTED TO GROUND

Turn the ignition off.
Disconnect the Engine Oil Pressure Switch connector.
Disconnect the Powertrain Control Module (PCM) connector.
Measure the resistance between ground and the (G6) EOP Signal circuit in the Engine Oil Pressure Switch harness connector.

Is the resistance above 100 ohms?

Yes

Go to 3

Repair the (G6) EOP Signal circuit for a short to ground.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

3. (G6) EOP SIGNAL CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE

Measure the resistance of the (G6) EOP Signal circuit between the Engine Oil Pressure Switch harness connector and the Powertrain Control Module (PCM) harness connector.

Is the resistance below 5.0 ohms?

Yes

Go to 4

Repair the (G6) EOP Signal circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

4. ENGINE OIL PRESSURE SWITCH

Turn the ignition off.
Connect the Powertrain Control Module (PCM) connector.
Turn the ignition on.
With the scan tool, select View DTCs.

NOTE: The PCM should display an Engine Oil Pressure Sensor Circuit High DTC with the switch disconnected.

Is the status Active for an Engine Oil Pressure Sensor Circuit High DTC with the switch disconnected?

Yes

Replace the Engine Oil Pressure Switch in accordance with the service information.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 5

5. POWERTRAIN CONTROL MODULE (PCM)

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Oil Pressure Switch and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes

Repair as necessary.

Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).