ECM is very reliable
only way to damage it - overpressurization when priming goes wrong.
yep, injectors are collected in banks. 1-2-3 and 4-5-6. But if one bank fails - other works
1996 Volvo D12 wia
Discussion in 'Volvo Forum' started by aron12, Apr 2, 2015.
Page 31 of 33
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have u got wiring diagram?
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How to check computer off the truck?
First of all - connect grounding and power supply.
Connect diagnostic interface to datalink pins
remove cover, check voltage on flux capacitor terminals (90 v DC)
connect ABS sensor on camshaft terminals
connect relays on injector pins
Move any steel grid to emulate camshaft speed
check for pulses on relays. They click usually/ Puls is 90V, but very fast, so no relay damage
check fault codes, ecm data to be sure processor and memory are okbenglebrick Thanks this. -
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Look at back cover of ECM. If it is not flat, looks lile a frog belly it may be damaged with pressure inside
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Finally I found truck with D12B engine.
D12A and D12B are different engines, really!
They share mechanics, but ECMs are different. D12B is controlled by VECU via J1939 and really D12B shares ECM with D12C. -
did you get it going? i have a 1995 volvo wia with ved 12 and had injector problems.
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did you ever get it going i know the feeling. i have a 95 volvo gmc white with ved 12. very hard to get anyone to work on it. i do most of the repairs myself now. i had injector problems. mc carhty tires in balt. md. they fixed it. they tested the injector harness. when i called volvo here they said they dont have anyone that has the know how to get it fixed.
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yep, I know, D12A and D12B are like forgoten art.
Volvo wont supporting so old trucks( -
No doubt still waiting to see what you would charge to make a diagnostic cable for my ved12a. lol can't find a shop with one that works
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