Absolute Pressure Sensor: Testing and Inspection
COMPONENT INSPECTIONAbsolute pressure sensor
1. Start engine and warm it up to normal operating temperature.
With Consult
2. Perform "MAP/BARO SW/V" in "ACTIVE TEST" mode with CONSULT.
3. Check the following.
- Condition: At idle under no-load
- CONSULT display
OR
Without Consult
2. Turn ignition switch "ON" and check output voltage between ECM terminals (64) and (128) (ECM ground).
The voltage should be more than 2.6V.
3. Start engine and wait at least 5 seconds and check voltage between terminals (64) and (128).
The voltage should be less than the voltage in step 2.
If NG, go to step 4; if OK, inspection end.
4. Turn ignition switch "OFF".
5. Remove absolute pressure sensor with its harness connector connected.
6. Remove hose from absolute pressure sensor.
7. Turn ignition switch "ON" and check output voltage between terminal (64) and (128) (ECM ground).
The voltage should be 3.2 to 4.8 V.
8. Use pump to apply vacuum of -26.7 kPa (-200 mm Hg, -7.87 inHg) 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 7.