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Ram B350 van wiring diagram needed

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Old 03-14-2012, 03:15 PM
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Default Ram B350 van wiring diagram needed

Anyone have the wiring diagram for a 1994 Ram B350 van? Specifically I need the ECU pinout and the wiring for the alternator field circuit. I'm getting a code 41. I replaced the alternator, the ECU main relay and the positive and negative cables. First thing in the morning the code isn't there but after 10-15 mins the CEL comes on and the occasionally the alternatore overcharges or undercharges.
Any ideas?
 
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Old 03-14-2012, 03:16 PM
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Sounds like the voltage regulator (which, unfortunately, is IN the PCM), is failing.
 
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Old 03-14-2012, 03:28 PM
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Thats what I'm afraid of. Hope not. Any idea which ecu's will interchange? It's a 5.2.
 
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Old 03-14-2012, 03:35 PM
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My guess would be any PCM out of a dodge van/truck/dakota with the same engine and trans.
 



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