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EEC-IV or EEC-V?

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Old Jun 9, 2019 | 09:20 AM
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EEC-IV or EEC-V?

I have a 1997 F350 with a 460 gas engine. It is an old U-Haul. Because it is over 10,000 GVW, they got around the OBD2 requirements. I don't know if it is an EEC-IV or EEC-V system. From what I've read, EEC-IV codes can be accessed by jumping wires in the EEC. EEC-V requires a scanner. Cover of EEC says only "EEC".
 
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Old Jun 9, 2019 | 10:00 AM
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I could be wrong but I think EEC IV has a 64 pin connector for the ECU and EEC V has a 128 pin connector.
 
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Old Jun 9, 2019 | 10:10 AM
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Originally Posted by BobQPublic
I have a 1997 F350 with a 460 gas engine. It is an old U-Haul. Because it is over 10,000 GVW, they got around the OBD2 requirements. I don't know if it is an EEC-IV or EEC-V system. From what I've read, EEC-IV codes can be accessed by jumping wires in the EEC. EEC-V requires a scanner. Cover of EEC says only "EEC".
this EEC cover you mention, is it in the engine compartment ?
 
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Old Jun 10, 2019 | 06:38 AM
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The cover which says EEC is over the test port(?) for the EEC, on the driver's sidewall of the engine compartment.
 
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Old Jun 10, 2019 | 07:38 AM
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Then it's an EEC-IV system. An EEC-V system would have the diagnostic connector under the dash near the steering column.
 
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Old Jun 10, 2019 | 08:05 AM
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Thank you!
 
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