LH Control unit testing... - Saab 900 Bulletin Board - Saabnet.com
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LH Control unit testing...
Posted by steven [Email] (more from steven) on Thu, 29 May 2014 15:03:53
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how do you test the unit itself to make sure it's working.the pump is new, I bypassed 27 and 30 fuses and the pump runs.I get power to the control unit, switched power, and constant power.I tested the socket at the fuel pump relay it has power, same with the system relay it has power.I have been driving saabs for 15 years, and have never had an LH control unit go bad. It is a 1990 Saab 900 turbo,so this is my 1st 1990. All the rest have been 86 87 and 88 900 turbos, so unfortunately I do not have a LH control unit to swap with it.we were on our way home from Kansas Cityand it was just dead on the side of the road, and hasn't started since. I figured it was just a pump so I put a new pump in that wasn't it.I have power to the ECU I have power to the coil, so my guess is LH control units bad but how do I confirm that.Thanks
posted by 208.54.40...
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