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07-10-2013
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#1 |
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Join Date: Dec 2012
Location: NC
Posts: 1,783
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Will not fully seated Memory Clibration module always...
... light up more than 1 DTC code?
I got a 42 4 module H. I cleared it, started diags running for a couple minutes, and it didn't light up again (I hate problems that go away by themselves). FSM says first 'Intermittent' is to check MEM-Cal module for seating. If it's not seated, won't it cause ALWAYS at least SEVERAL DTC's, instead of just one?? |
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07-10-2013
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#2 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,683
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Re: Will not fully seated Memory Clibration module always...
If you put it into DIAG mode, it should just give you 1 + 2 flashes, 3 times, then repeat. Have you looked at the prom? The blue and white levers on each end should be locked in. Is your MALF code for the ECM or CCM?
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07-10-2013
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#3 |
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Join Date: Dec 2012
Location: NC
Posts: 1,783
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Re: Will not fully seated Memory Clibration module always...
Haven't started digging yet there Darryl; waiting to see if the code lights up again here...
Diagnostic mode LCD showed proper when reading, and when cleared. Loose ground somewhere probably - haven't checked any system ground connections either. LCD flickers occasionally too. Still trying to de-compile the automatic install, and get it zipped up. |
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07-10-2013
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#4 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,683
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Re: Will not fully seated Memory Clibration module always...
Sounds like a CCM issue
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07-10-2013
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#5 | |
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Join Date: Dec 2012
Location: NC
Posts: 1,783
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Re: Will not fully seated Memory Clibration module always...
Quote:
32k car shouldn't have grounds problem otherwise. Corrosion in some grounds I'm sure; previous owner had the headlight motor short, which was draining the battery. He also had mounted an onboard trickle charger for this. Fumes HAD to be involved. |
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07-10-2013
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#6 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,683
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Re: Will not fully seated Memory Clibration module always...
Those are CCM codes, not ECM.
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07-14-2013
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#7 |
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,156
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Re: Will not fully seated Memory Clibration module always...
Let's start from the beginning.. Tell us exactly how you are grabbing the codes.. Are you installing a jumper somewhere or?
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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07-15-2013
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#8 |
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Join Date: Dec 2012
Location: NC
Posts: 1,783
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Re: Will not fully seated Memory Clibration module always...
Yes - jumper into the sockets 'A' and 'G'...
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07-15-2013
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#9 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,156
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Re: Will not fully seated Memory Clibration module always...
for the SES to Flash I believe it is A & B that are jumpered
for the FX3 it is A & C doing what you are doing is just like what WVZR-1 is saying, the H codes are history ones and not current
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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