Code# 42
Instructor
Joined: Jul 2008
Posts: 144
Likes: 0
From: Carrollton Texas
electronic igniton controll grounded (never could spell sorry)
i had that on my 92 and i just pulled the battery for a few min and it went off hasent come back in a month or so.
could be a bad ecm or loose wire connection
i had that on my 92 and i just pulled the battery for a few min and it went off hasent come back in a month or so.
could be a bad ecm or loose wire connection
Thread Starter
Le Mans Master
Joined: Jul 2009
Posts: 6,381
Likes: 66
From: SF bay area C.A.
C4 of the Year Finalist
got a 92 also, thanks ill check it out tommorrow, any suggestions where to start? also i just cut out the airbox could this have caused my car to die pertaining to the ecm?
Last edited by kimmer; Oct 22, 2009 at 06:13 PM.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Post a question....Don't have a FSM for a 1992....I have a DTC code 42???? Please help.
Thread Starter
Le Mans Master
Joined: Jul 2009
Posts: 6,381
Likes: 66
From: SF bay area C.A.
C4 of the Year Finalist
ok now it wont start at all could this be the ign. coil driver? I can do mechanicel work but my electrical is worthless, Im no good at testing voltage or probing things.
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Pro
Joined: Mar 2008
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From: High Bridge New Jersey
Burning Brakes
Joined: Mar 2006
Posts: 891
Likes: 18
From: Dayton Ohio
The code is set by a lack of Electronic Spark Timing signal to the ECM. This is a white wire between the ECM and ignition coil driver(pin 12in the yellow or grey plug at ECM to pin B on the ignition module). Check your wiring between your ECM and ignition module including a close check of the connectors. The wiring is likely good but if you have had a connector gasket fail there could be corrosion in the connector causing a failure.
You could also have a short between the high and low resolution lines from the Optispark. This also could be a wiring/connector issue or a failed Optispark. It is hard to say.
This may be a simple problem that is difficule to track down. A factory service manual would be worth a lot to you at this point.
Matt
You could also have a short between the high and low resolution lines from the Optispark. This also could be a wiring/connector issue or a failed Optispark. It is hard to say.
This may be a simple problem that is difficule to track down. A factory service manual would be worth a lot to you at this point.
Matt
