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Old 06-27-2023, 08:48 AM   #1
Mini-Skoolie
 
Join Date: Nov 2022
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Year: 2008
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Chassis: CE 300 man. 2006
Engine: 2006 DT466 with egr
Rated Cap: 20 with 5 handicap
Need electric diagrams

I am looking for the wiring diagrams for a 2006 ce300. I have found the link that contains most of ICs information but it does not have Legacy School Buses. https://www.internationaltrucks.com/body-builder/body-resources does anyone know where I can find the older diagrams?

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Old 07-03-2023, 07:02 PM   #2
Skoolie
 
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Year: 2007
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Chassis: CE200
Engine: VT-365
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Quote:
Originally Posted by t-chuck View Post
I am looking for the wiring diagrams for a 2006 ce300. I have found the link that contains most of ICs information but it does not have Legacy School Buses. https://www.internationaltrucks.com/...body-resources does anyone know where I can find the older diagrams?
I recently bought a CD on eBay that had a pdf of my engine's service manual. It is a steep price to pay for like 15kb of info, but it was legitimate. My next purchase will be the chassis wiring cd.

https://www.ebay.com/itm/204297071765

Good luck!

I guess build date and model year are different, so I would message the seller before taking the leap.
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Old 07-03-2023, 08:17 PM   #3
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Year: 1999
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Engine: DT466E HT 250HP - Md3060
2007 B & CE wiring diagrams

Quote:
Originally Posted by t-chuck View Post
I am looking for the wiring diagrams for a 2006 ce300. I have found the link that contains most of ICs information but it does not have Legacy School Buses. https://www.internationaltrucks.com/...body-resources does anyone know where I can find the older diagrams?
Try these on for size.
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Old 03-12-2024, 12:47 PM   #4
Almost There
 
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Chassis: CE300 Conventional (PB105)
Engine: 2009 Maxxforce DT
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Originally Posted by ewo1 View Post
Try these on for size.
I just made my bus non-startable while pulling wires.

I am very confused by Section 3.3 Ignition Feed P.3 (page 23) and Section 3.4 P.4 (page 24).

From what I see, a pink wire runs to IGN RELAY #1 and IGN RELAY #2.

Relay #1 appears to excite Telematics and Compass, so I am assuming Relay #2 goes to actual starter.

I'm assuming starter signal goes to F18? But schematic stops at fuse blocks and I lose trace.
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Old 03-12-2024, 02:04 PM   #5
Bus Crazy
 
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Did you pull any of the wires for the circuits you mentioned ???

Most times busses become non startable is because a door, window, emergency hatch or wheelchair interlock was disturbed.

Did you remove wires for any of these types of circuits?

It would help greatly if you can better explain what wires/circuits you were messing with.
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Old 03-12-2024, 02:12 PM   #6
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F18 - see pdf page 52, right side of page just below pedal circuit.

wired to engine ECM, position 31, Ignition key power.

Oh yeah, your fired from the wire cutting job!
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Old 03-12-2024, 03:19 PM   #7
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Quote:
Originally Posted by ewo1 View Post
Did you pull any of the wires for the circuits you mentioned ???

Most times busses become non startable is because a door, window, emergency hatch or wheelchair interlock was disturbed.

Did you remove wires for any of these types of circuits?

It would help greatly if you can better explain what wires/circuits you were messing with.
literally the whole panel was getting worked as I minimized bundles one wire at at a time. I thought about emergency exit stuff, but I had already cut them prior and was able to start.

Just gonna be me tracing the starter circuit next weekend to determine what I may have cut.

I thought I was being deliberate enough, but I was swimming in wire.

I also now located the Charging and Cranking system circuit in Section 4.1, so that is very helpful for me to see what I clipped.

I get no starter click so I'm certain I cut something on Monday.
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Old 03-12-2024, 03:21 PM   #8
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Quote:
Originally Posted by ewo1 View Post
F18 - see pdf page 52, right side of page just below pedal circuit.

wired to engine ECM, position 31, Ignition key power.

Oh yeah, your fired from the wire cutting job!
I have the Maxxforce DT, isn't that for V8 only or applicable to all?

EDIT: Found it on page 49 of pdf
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Old 03-12-2024, 03:30 PM   #9
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Imagine your bus with NO motor.... Starter only.
The wiring diagram would be the same up to certain points/connections, the starter....

If you got no starter click, run a temp wire with a push button switch to the relay in question. apply power/push button to see if starter turns...work from there.

also, I have found that many bus wires are numbered, they have numbers printed on them. Look at you cut pile of wires, look for numbers and then try to find those wires on the circuit diagrams, helpful to identify what circuits you interrupted.

What scares me as I have zero experience with it, the all the different controllers on your bus.

You should sketch out a block diagram of the controllers you find on your bus, if anything so at least you know what you got and where it is located.
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Old 03-12-2024, 03:42 PM   #10
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Take a look at pages 12-14 of part 1.

This table identifies the wire number and wire color and what circuit the wire is associated with.
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Old 03-12-2024, 03:46 PM   #11
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Quote:
Originally Posted by ewo1 View Post
Imagine your bus with NO motor.... Starter only.
The wiring diagram would be the same up to certain points/connections, the starter....

If you got no starter click, run a temp wire with a push button switch to the relay in question. apply power/push button to see if starter turns...work from there.

also, I have found that many bus wires are numbered, they have numbers printed on them. Look at you cut pile of wires, look for numbers and then try to find those wires on the circuit diagrams, helpful to identify what circuits you interrupted.

What scares me as I have zero experience with it, the all the different controllers on your bus.

You should sketch out a block diagram of the controllers you find on your bus, if anything so at least you know what you got and where it is located.
Good to go. luckily for me, no telemetrics or other crazy adds with my bus.

I've been deleting the flashers, e-exit sensors, heaters, lighting, and radio so far.

basically just an ECM and guage cluster at this point.

I do plan on making my own diagram after I am done chopping it all up for nice maintenance reference later.

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Old 03-12-2024, 06:28 PM   #12
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Yikes.....no **** you going to town. All I did on my 2001, searched and found the starter interrupt circuit. Then I found the 4 wires, 2 on the body builder side, 2 on the chassis side. Unplugged them and just plugged the 2 chassis wires together. Starts everytime.

Now the reason......I believe a screw hit one of the wires causing the no start. Glad it happened at home and not some chaffed wire on the road.

Regardless. All my window, roof, door switches removed. Cut whatever wire I could. Left rest in place. Deemed to much effort to rip all that wiring to remove 5.....maybe 10lbs of wire but I respect people putting in the effort
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Old 03-12-2024, 06:51 PM   #13
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Yea, I'm happy to make all these mistakes now because my goal is know what every wire on this bus does to avoid the very scenario you are talking about.

By the time I'm done with cleaning up the wiring as far as I'm going into it, there won't be much left to go wrong later 😆😅
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Old 03-12-2024, 06:55 PM   #14
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Quote:
Originally Posted by Omnibot2000 View Post
All I did on my 2001, searched and found the starter interrupt circuit. Then I found the 4 wires, 2 on the body builder side, 2 on the chassis side. Unplugged them and just plugged the 2 chassis wires together. Starts everytime.
I need to figure this out on mine this week now. I've seen the Body Builder mentioned in the schematics, but need to research it. No idea what that is.
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