MAP Sensor

NOTE: The following vacuum and pressure values are indicated by relative pressure from atmospheric pressure.




1. Connect the SSTs to the data link connector-2.
2. Select the "PID/DATA MONITOR AND RECORD" function on the NGS display.
3. Select "FTP V" on the NGS display and press START. The NGS measures and shows the voltage.
4. Turn the ignition switch to ON.

CAUTION: Do not apply a vacuum or pressure outside of the specified limits. Doing so will damage the manifold absolute pressure sensor.




5. Apply pressure then a vacuum to the manifold absolute pressure sensor according to the following procedure.
6. Decrease the applied pressure from +100 kPa {+750 mmHg, +29.5 in.Hg} to -86.7 kPa {-650 mmHg, -25.6 in.Hg} and verify that the "MAP V" voltage decreases accordingly.

Reference data




NOTE: The output voltage varies with the measuring condition.

Measuring condition:
- Input voltage: 5.0 V
- Atmospheric pressure: 101.3 kPa {760 mmHg, 29.9 in.Hg}
- Outside temperature: 25° C {77° F}

7. If not as specified, perform the following inspection.




- Harness continuity
- Between PCM terminal 3AB and manifold absolute pressure sensor terminal A
- Between PCM terminal 3U and manifold absolute pressure sensor terminal B
- Between PCM terminal 3A and manifold absolute pressure sensor terminal C
- Terminal voltage (Ignition switch ON)
- Manifold absolute pressure sensor terminal B voltage:
Constant voltage (4.5 - 5.5 V)
- Manifold absolute pressure sensor terminal A voltage:
Ground (Below 1.0 V)

8. If terminal voltage is correct and if there is harness continuity, replace the manifold absolute pressure sensor.