It says with short circut ECU will be probably damaged - Saab 9000 Bulletin Board - Saabnet.com
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It says with short circut ECU will be probably damaged
Posted by Victor (more from Victor) on Tue, 31 May 2005 11:22:18
In Reply to: Testing ECU, buying a used BPC Solenoid, Bill Homer [Profile/Gallery]
, Tue, 31 May 2005 10:54:47
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So, should I assume that as long as both pins have 3 ohm resistance- ECU is good?
Bill, great info, thanks!
This is what I found:
· Pins 1 and 2
· Pins 2 and 3 Nominal resistance is 3 ±1 ohms in both circuits.
If the readings are OK, continue with point 6.
If any reading is not OK, change the boost pressure control valve.
NOTE : If any winding has a short circuit, the control module will probably also be damaged. If a new valve is then fitted, it will automatically be rendered unserviceable. Accordingly, in the event of a short circuit the control module must be changed.
If necessary, change fuse 5.
6.Checking The Valve Ignition switch in the ON position. Plug in the valve's connector. A slight buzzing sound should then be heard. If the valve buzzes, continue with point 7. If the valve does not buzz, check the lead between pin 3 of the valve's connector and pin 2 of the control module and take remedial action if necessary. If the lead is OK, continue with point 11.
7.Checking The Valve's Electrical Connection Unplug the valve's 3-pin connector. Turn the ignition switch to the ON position. Connect a test lamp to pins 1 and 2 of the connector. The test lamp should not light up. Select "ACTIVATE". Select "BOOST PRESS. VALVE". The test lamp should light up. If the test lamp lights up, continue with point 8. If the test lamp does not light up, check the lead between pin 1 of the valve's connector and pin 26 of the control module and take remedial action if necessary. If the lead is OK, continue with point 11.
posted by 66.216.138...
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