Manifold Pressure/Vacuum Sensor: Testing and Inspection

INSPECTION:





Using Scan Tool

HARNESS INSPECTION:





STEP 1. Check for continuity of the ground circuit.
- Manifold differential pressure sensor connector: Disconnected
OK: GO TO STEP 2
NG: Repair the harness. (A2 - 49)





STEP 2. Check for open-circuit, or short-circuit to ground, between the engine control module and the manifold differential pressure sensor.
- Manifold differential pressure sensor connector: Disconnected
- Engine control module connector: Disconnected
OK: GO TO STEP 3
NG: Repair the harness. (A1 - 92)





STEP 3. Measure the sensor feed voltage to the manifold differential pressure sensor.
- Manifold differential pressure sensor connector: Disconnected
- Engine control module connector: Connected
- Ignition switch: ON
Voltage: 4.8 - 5.2 V
OK: STOP
NG: Replace the engine control module.