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Re: Codes Reading
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Posted by Ron Johnson (more from Ron Johnson) on Sat, 28 Jan 2006 05:50:38 Share Post by Email
In Reply to: Re: 1992 9000 automatic, Mario, Fri, 27 Jan 2006 19:01:55
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Ok,here goes.The codes obtained should be listed as "Permianent and/or "Intermittent",none of yours have this listed and it makes a big difference in how thing should be done and in what order.

"77595-ECU fault:safety switch 32"(the Turbo bypass valve,it's mounted on the dirvers side fender well) It should have been read as "6/77595,and any other that started with a :2,3,4,or 5 should be looked at first,and the fault repaired first in order. It's the limp home mode code,and indicates a fault with the turbo bypass valve.You need to check all the vacume lines connected to it for:condition,cracks,proper position placementon the ports,then remove the elec plug and test the valve for it's Ohm reading.It should test app. 30Ohms.if not replace it.

"D7590-Safety System Activated" It's in a intermittent "Limp Home" mode,the dash light should be on.

"2/42320-+15 signal absent despite Td(while ignition pulses detected)" This means if the fault is the is perminent,communications cannot be established with the code reader.The limp home is set,youneed to check fuse #13 and see if it's blown/replace it.The ECU may be at fault,try a different one.

"4/22220- no voltage at pin 22 and/or pin 13" It's again in limp home mode.The ECU power-off monitoring function auto tests the ETS system every time the power supply is cut off by the ign.switch.Power remains for 3 seconds after so the self test is done and then turns off. you need to check fuse #21 and relay #377.Test with good known units.

Your problems appear to be minor,and bad safety valve(very common) and some power supply problems,may be a bad relay or ECU.It's really a easy fix,no throttle body needed yet. Mainly lack of proper understanding of the system by the dealer.Good Luck .Get back to me...

posted by 64.136.27...
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