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From The Saab Tech Wiki
The resistance of the sensor coil can be measured across connector pins 1 and 2, and should be within about 10% of the nominal value (At 20C temp). Both pins should test "open" to pin 3. If not, the sensor should be replaced. However, resistance is not always proof of a good sensor.
==Access==
* Turbo BPV vacuum line
* Engine cover
==Information==
===Retaining Bolts Spec===
Torx T-30, M6x100
6 lb-ft torque
===Tools===
* 3/8 drive Ratchet
* 6-inch extension (or shorter with fan in place)
* T-30 Torx socketed bit
* 8, 10, and 13-mm sockets
* PB Blaster penetrant
* Wire brush
===References===
Saab EPC 3A-0420
Haynes Ch 4A, section 15
===Sensor Types===
{| border="1" cellpadding="5" cellspacing="0" width="100%"<tbody> align="LEFT" valign="TOP"
| colspan="4" | <b><font face="Arial,Helvetica">Sensor Types</font></b>
|-
| <b>Year/Model</b>
| <b>900SET 2.0L</b>
| <b>900SE 2.5L V6</b>
| <b>900S 2.3L </b>
|- align="LEFT" valign="TOP"
| <b>1994-95</b>
| rowspan="2" valign="CENTER" | p/n 4227203
<br>540 Ohms
<br>P0335
| p/n 4504288
<br>540 Ohms
<br>P0322, P0336
| p/n 4227203
<br>540Ohms
<br>P0322, P0336
|- align="LEFT" valign="TOP"
| <b>1996-98</b><br><b>(OBD II)</b>
| p/n 4300737
<br>540 Ohms
<br>P0322, P0336
| p/n 9177221
<br>860 Ohms
<br>P0335, P0336
|}
