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Need wiring diagram for a 2001 kenworth T 800( cab to ECM)

Lost power to pin 1 and 70.

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  • terrycote
    terrycote Nov 02, 2012

    This is a highway truck with a cat C-15

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6ya6ya
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Posted on Jan 02, 2017

  • 85 Answers

SOURCE: does the A5 pin on the ecm give a 12 V output

Go to TBICHIPS.com he will answer for you

Posted on Apr 29, 2009

  • 1 Answer

SOURCE: need IMS Conversion vans wiring diagram for 2001

i have a ford windstar 1995 model,also i have a transmission problem,when is cold it drive nomal like 1000 meter,but when it hot stop driving,what do u think is the problem?

Posted on Oct 21, 2009

  • 1757 Answers

SOURCE: I need a electrical/wiring diagram for a 2001

For the entire Vehicle? Then go to alldatadiy.com. They have the most extensive and complete wiring diagrams I have ever seen or used. Cost is approximately $25 for a full 12-month subscription. The Haynes and Chilton Manuals only have "Generic" wiring diagrams, meaning they won't necessary match wire for wire to your specific vehicle. IF you know someone at a dealership service department or garage, ask them for copies of the specific area wiring diagrams you need. I do subscribe to alldatadiy and swear by them. The 12-month subscription is well worth the price. They have everything (plus more) you will ever need about your vehicle.
Let me know if this helped or if you have additional information or questions. Feel free to contact me at FixYa.com!

Posted on Feb 05, 2010

muntejaya
  • 10421 Answers

SOURCE: Looking for the wire color codes for the ECM

Hi,
Please get it here : www.wiringdiagrams21.com/search/pajero+engine+diagram

Regards, Jay

Posted on Feb 27, 2011

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I have a 1999 kenworth w900 l with a cat 3406 e I need the color codes and ECm to harness plug diagrams


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Hook it up to a code reader via OBDII for specifics. Tecnically, there is no reason to flash your ECM unless you are using another ECM from a parts car...for say a 1989 Chevy. This ECM was used on the 1989 S-10 truck with the 2.5L four cylinder, the ’89 Camaro with the 5.0L HO V8 and the ’89 Corvette with the 5.7L Tuned-Port V8 engine. The only difference (aside from the vehicle wiring harness pin population) was the PROM. The PROM contains the calibration software for the ECM. Another reason would be to bypass a security locked ECM like a 2001 Pontiac GT which was notorious for shutting off the fuel pump if the security chip in the key lost connection through switched power.

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A short in the ECM , does it blow the fuse right away ? or does the vehicle start then it blows the fuse ?A short in the wiring going to the ECM could do it also ! Disconnect the connector at the ECM Pull the fuse an check the wire with a ohm meter ! starter has nothing to do with, has a short to ground somewhere on that ECM power feed circuit .You need to find a wiring diagram for that circuit. Connector 2 black 24 pin connector , A-2 pink wire . first you need to find correct side of the fuse pin without power , with volt meter , one side will battery voltage ,you don't want that one ! put black lead to ground an the other to the wire an see if there is continuity. Hope this isn't to long winded an I hope it helps !

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I don't know where it is, probably under the passenger side dash. But before condemning the ECM, check the wiring to that injector. First try to determine if it is the power wire or the ground wire for the injector which is lost. With key on, the yellow power wire should have voltage on it at the injector connector. This is independent of the ECM-only the ground wire goes into the ECM, to be internally grounded to pulse the injector. The #5 ground wire is a yellow-green wire.

If you have voltage on the power wire to #5, key on, then we know either the ground wire is bad (broken or open) to the ecm -or the internal ground for that injector is out, inside the ECM.

To determine whether it is the ground wire or the ECM, you will have to locate the ECM, pull the electrical connector off to it (Be sure and take the negative battery post off, first.), then locate the yellow green wire at pin #106 of the ECM electrical connector. Now test the continuity of that wire from the injector connector to the ECM connector-use a voltmeter set to ohms. If the wire has continuity, then the ECM must have a problem- the internal injector driver for #5 may have failed. Also look for a bent pin at #106, or anything amiss in the electrical connector. In most cases, it is not the ECM but a wiring problem.
Good luck. To locate the ECM, register for free at autozone.com, listing make, model, and year. Look under "repair guides", then component locations-it should tell you the location of the ECM.

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If you are refering to the Engine Control Module (ECM) for your 1987 Blazer, there are two connectors. One is the "A/B" connector (24 Pins) and the other is the "C/D" connector (32 Pins). The letters represent the rows in which a particuler wire or wire connector can be found. For example, if the wiring diagram shows the wire to be going to ECM connector B4, The actual location would be in the 24 pin connector at the ECM and would be the fourth wire in the "B" row of connector pins. SEE DIAGRAM BELOW.

4_11_2012_1_01_08_am.gif

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On the MAF sensor connecting plug you will see 5 pin numbers. Each pin number correspond to a wire color:
Pin no.# 1 = violet/green, is comming from pin no.# 26 of ECM. ECM = Engine Control Module.
Pin no.# 2 = blue/yellow, is comming from fuse no.# 43 = 10 Amp. (battery plus is comming through a blue wire from pin no.# 23 of fuel pump relay).
Pin no.# 3 = green, is comming from pin no.# 27 of ECM.
Pin no.# 4 = red/violet, is comming from pin no.# 53 of ECM.
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Wiring diagram:

2_11_2012_8_32_32_am.jpg

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1 Answer

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Also, according to the powertrain diagnostics manual, page 248, it's "Powerdown data lost error". Set condition: loss of voltage detected at the ECM for a calibrated amount of time.

If you don't trust your dealer to perform the diagnostics, I recommend splicing a volt meter into the following power pins on the ECM:
- Connector C2 (polarizing pins are at the bottom of the connector): 20, 30, and 40. Those need to be +12. Pins 21, 49, and 50 are the grounds.
- Run the voltmeter into the cab so you can watch it all the time.

Hope helps (remember rated this).

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