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JB74- K15B ECU wiring Pinout Diagram

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19 Dec 2023 09:33 - 19 Dec 2023 11:32 #252932 by MIghty Zuk
Hi, I've been looking for the ECU wiring pinout for my K15B engine. Been searching and asking everywhere for it but no luck, would anyone have a copy of the wiring pinout diagram. 
I'm currently wanting to rewire the wiring harnesses from the ECU to the transmission. Having the diagram will really help out lots. Thanks 
Attachments:
Last edit: 19 Dec 2023 11:32 by MIghty Zuk.

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19 Dec 2023 09:58 #252933 by mlines
What are you trying to achieve?

The ECU controls the Engine.

The BCU (Body Control Unit) and TCM (on A/T systems) and 4WD module control the rest of the vehicle including the transmission. However the bulk of the communication is now CANBUS so is a data link, not simple sensor signals.

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
The following user(s) said Thank You: MIghty Zuk

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19 Dec 2023 11:32 - 19 Dec 2023 11:51 #252934 by MIghty Zuk
Hi, thanks for the info. 
 I've bought a K15B engine together with the 4 speed A/T transmission but the wires has all been cut therefore I would like to figure out what each wire connects to.
Thanks !
I've attached a picture of the ECU/BCU and the cut wires.
Attachments:
Last edit: 19 Dec 2023 11:51 by MIghty Zuk.

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19 Dec 2023 13:58 #252939 by fordem
I hate to be the bearer of bad news, but, the wiring is going to be the least of your problems - you're not going to get that running without the immobilizer & keys from the Jimny that ECM came from, or another immobilizer & key set AND a way to program them to one another.

You're also going to need the TCM, BCM and pretty much every other electronic controller the "donor" car had fitted because they're going to look for one another and generate fault codes when they can't find the missing controllers.

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19 Dec 2023 14:21 #252940 by mlines

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
The following user(s) said Thank You: MIghty Zuk

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21 Dec 2023 09:21 #252983 by MIghty Zuk
HI, thank you so much for the much needed info!

I've currently managed to rewired the ECU wrings, bypass the immobilizer and the BCM connected. However i was only aware of the TCM after you mentioned it. I then went looking for one. I'll attached an image, would you kindly help me to confirm that this is the TCM for the engine. thanks you!
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21 Dec 2023 21:58 #252997 by mlines
TCU is - 3E130-78R10

Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses

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24 Dec 2023 09:15 #253036 by MIghty Zuk
Thanks for the confirmation Martin!

By the way do you know if the wiring harness for the TCU has a part number so that I can look for one online? Or do I have to figure the wiring out.

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