Component Inspection (EVAP Control System Pressure Sensor)

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Turn ignition switch OFF.
Remove EVAP control system pressure sensor with its harness connector.
Always replace O-ring with a new one.
Install a vacuum pump to EVAP control system pressure sensor.

Turn ignition switch ON and check output voltage between ECM harness connector terminals under the following conditions.

TERMINALS VOLTAGE REFERENCE CHART

ECM			Condition [Applied vacuum kPa (kg/cm² , psi)]	Voltage (V)
Connector	+	-
Connector	Terminal	Terminal
F160	143	150	Not applied	1.8 - 4.8
F160	143	150	-26.7 (-0.272, -3.87)	2.1 to 2.5 lower than above value

CAUTION:

Always calibrate the vacuum pump gauge when using it.
Never apply below -93.3 kPa (-0.952 kg/cm² , -13.53 psi) or pressure over 101.3 kPa (1.033 kg/cm² , 14.69 psi).

Is the inspection result normal?

YES: INSPECTION END

NO: Replace EVAP control system pressure sensor.