![Bild](http://home.bip.net/mandorallen/files/dpm/dpm.jpg)
Air Temperature Sensor
At 20 °C, the sensor resistance must be 2500ohm ± 300. Sensor should also be tested through all its operating range. Use the following chart. Replace sensor if not within specifications.
![Bild](http://home.bip.net/mandorallen/files/dpm/dpmvarden.jpg)
Solenoid and MPEM- Static Test
Unplug electric connector of solenoid no. 20 and connect it to a 12 V battery. The solenoid must sound when it opens. Otherwise, replace solenoid.
Repeat test several times.
Dynamic Test
Air temperature sensor must be at 20 °C (68 °F). For the test, operate the engine at 3800 RPM.
The solenoid must vibrate. Otherwise, ensure fuse(s), wiring harness and
connections are in good condition and if so, try a new MPEM and retest.
![Bild](http://home.bip.net/mandorallen/files/dpm/dpmtest1.jpg)
![Bild](http://home.bip.net/mandorallen/files/dpm/dpmtest2.jpg)
melmaq
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