Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check that water is not inside connectors.
Is the inspection result normal?

YES

GO TO 2.

NO

Repair or replace error-detected parts.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY

Turn ignition switch ON.

Check the voltage between EVAP control system pressure sensor harness connector and ground.

+		-	Voltage (V)
EVAP control system pressure sensor
Connector	Terminal
B41	3	Ground	Approx. 5

Is the inspection result normal?

YES

GO TO 4.

GO TO 3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

EVAP control system pressure sensor		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B41	3	E10	125	Existed

Is the inspection result normal?

YES

INSPECTION END

Repair or replace error-detected parts.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

EVAP control system pressure sensor		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
B41	1	E10	148	Existed

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 5.

Repair or replace error-detected parts.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check EVAP control system pressure sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace EVAP control system pressure sensor. Refer to Removal and Installation .