97 ecu in a 96?
#1
97 ecu in a 96?
howdy guys just wondering if a 97 4runner 4x4at 3.4 work in a 96 4runner 4x4 3.4at? im getting mixed results searching online and calling Toyota well there no help at all thanks guys!
#3
Registered User
Doesn't look like they are the same numbers. These should be the ECM p/n's involved:
89661-3D150 (11/1995 - 07/1996)
89661-3D320 (08/1996 - 11/1996)
89661-3D321 (12/1996 - 07/1997)
As you can see, there was a switch four months into MY '97. I have no idea why.
This doesn't mean it won't work. It means it is not plug-and-play (or probably not.)
What you need to do is buy yourself a $15 2-day pass on TIS and download the wiring diagrams for Starting and Ignition and Engine Control and ETC (A/T) for '96 and '97, and then compare plug-by-plug, pin-by-pin, wire-by-wire what each ECM connects to. Maybe the plugs are the same but they need a few repins. Maybe the changes are minor spec changes internal to the box and it will work fine. Maybe the plugs are different but you can transplant a donor plug or two and repin.
Unless you can find someone who has done the exact same p/n swap, there is no way to know unless you do the homework.
If you get the diagrams, I'll try to help. I think I have '96, but it doesn't help, you need both.
89661-3D150 (11/1995 - 07/1996)
89661-3D320 (08/1996 - 11/1996)
89661-3D321 (12/1996 - 07/1997)
As you can see, there was a switch four months into MY '97. I have no idea why.
This doesn't mean it won't work. It means it is not plug-and-play (or probably not.)
What you need to do is buy yourself a $15 2-day pass on TIS and download the wiring diagrams for Starting and Ignition and Engine Control and ETC (A/T) for '96 and '97, and then compare plug-by-plug, pin-by-pin, wire-by-wire what each ECM connects to. Maybe the plugs are the same but they need a few repins. Maybe the changes are minor spec changes internal to the box and it will work fine. Maybe the plugs are different but you can transplant a donor plug or two and repin.
Unless you can find someone who has done the exact same p/n swap, there is no way to know unless you do the homework.
If you get the diagrams, I'll try to help. I think I have '96, but it doesn't help, you need both.
Last edited by TheDurk; 10-24-2014 at 01:54 PM.
#4
Registered User
What is your ecm part number?
I assume yours is a 96 and someone gave you a good deal on a 97 ecm.
My guess would be it will be fine. Little change from 96 > 97 but only an exact ecm swap would be ideal. What was posted above is sound advice and I can send some diagrams if you pm me your email address.
I assume yours is a 96 and someone gave you a good deal on a 97 ecm.
My guess would be it will be fine. Little change from 96 > 97 but only an exact ecm swap would be ideal. What was posted above is sound advice and I can send some diagrams if you pm me your email address.
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