Absolute Pressure Sensor: Testing and Inspection

COMPONENT INSPECTION
1. Remove absolute pressure sensor with its harness connector connected.
2. Remove hose from absolute pressure sensor.

3. Turn ignition switch "ON" and check output voltage between terminal (2) and engine ground.

The voltage should be 3.2 to 4.8 V.

4. Use pump to apply vacuum of -26.7 kPa (-200 mmHg, -7.87 inch, -3.87 psi) to absolute pressure sensor as shown in figure and check the output voltage.

The voltage should be 1.0 to 1.4 V lower than the value measured in step 3.

5. If NG, replace absolute pressure sensor.

CAUTION: Always calibrate the vacuum pump gauge when using it.