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Re: The burn off feature isn't in the DI it is in the trionics un
Posted by aero gy (more from aero gy) on Sat, 21 Jul 2001 13:50:59
In Reply to: My DI cassette's "burn-off" cycle doesn't work - advice please, Smeter, Sat, 21 Jul 2001 12:51:03
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it. It is triggered by the fuel control relay holding and a zero tach signal input and lifting the +54 voltage. Check or Change your fuel control relay, This has a holding latch to trigger the burn off mode from the DI/APC controller. PN 85 33 176 - Relay has two names but only one function, first name is fuel control relay (not to be confused with the fuel pump relay) the other is engine management control relay - same part, same location, Guess saab finally decided to re-name it. In the glove box or under the air bag, second from front left side in relay bank
To test the ABS relay is the same part just exchange these see if it works, it also has a holding flatch. Check pins to assure that your relay is latching, clicks don't necessarily mean the fuel control relay is working but would be a good indication swap the relays abdnd see if buzz starts if it doesn't you may have a trionics problem. good luck
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