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Fault codes 

 

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 Post subject: Fault codes
Posted: Thu Sep 03, 2015 2:00 pm 
Oompa Loompa
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Age: 37

Posts: 25

Joined: 22nd Jul 2014

Ride: NF V8 FAIRLANE

Location: brisbane
QLD, Australia

Hi ,

I have just done a scan on my NF and there are 2 codes coming up . 778 code I now what that is but 637 code I know it's the trans temp link about I can't find where it is and what it does . I hope if I fix the problem the car will get out of limp mode . If anyone has had the same problem or know where I can look .

Any help would be grateful .
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 Post subject: Re: Fault codes
Posted: Thu Sep 03, 2015 6:20 pm 
Smokin em up
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Age: 32

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Ride: EF GLi Manual, '91 EB Wagon

Location: Waikato
New Zealand

The information Link between the EEC and the 97LE module is at or near +12V. Can be caused by a short to Battery Voltage, or a fault in either of the 2 modules
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 Post subject: Re: Fault codes
Posted: Thu Sep 03, 2015 6:21 pm 
Smokin em up
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Age: 32

Posts: 233

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Ride: EF GLi Manual, '91 EB Wagon

Location: Waikato
New Zealand

5h4dy wrote:
The information Link between the EEC and the 97LE module is at or near +12V. Can be caused by a short to Battery Voltage, or a fault in either of the 2 modules


And 778 will be to do with the ECU not turning the cooling fans on.....

Perhaps try another ECU?
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 Post subject: Re: Fault codes
Posted: Thu Sep 03, 2015 8:05 pm 
Oompa Loompa
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Age: 37

Posts: 25

Joined: 22nd Jul 2014

Ride: NF V8 FAIRLANE

Location: brisbane
QLD, Australia

Ok can you check the wire between the two to make sure it's getting 12v , and I will have to have a look at the battery terminals as the battery is brand new .
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 Post subject: Re: Fault codes
Posted: Thu Sep 03, 2015 9:04 pm 
Smokin em up
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Age: 32

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Joined: 8th Jul 2009

Gallery: 1 images

Ride: EF GLi Manual, '91 EB Wagon

Location: Waikato
New Zealand

I believe it's saying it SHOULDN'T be getting 12v, should be earth. And a short to battery voltage on that line isn't caused by a dodgy battery terminal.

I'm no expert, but my interpretation of the error would be that one of the modules is faulty (EEC or 97LE (transmission) module) - and since the other error points to an EEC fault also, I would be trying a new (second hand) ECU before trying to trace a wiring short.
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 Post subject: Re: Fault codes
Posted: Thu Sep 03, 2015 9:14 pm 
Oompa Loompa
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Age: 37

Posts: 25

Joined: 22nd Jul 2014

Ride: NF V8 FAIRLANE

Location: brisbane
QLD, Australia

Ok thanks , I wasn't to sure on what you were say but it makes sense now . I will take a trip to the wreckers tomorrow.
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