or Tire Stress Monitoring System

This U100 code and transmission fault light illuminated commences rather intriguing. The fleet owners of this vehicle had a instruction session scheduled for his or her newly bought Snap-on ProLink-IQ (NEXIQ). The company principles for instruction on the new piece of products for any fleet operation are no faulty motor vehicles for lab routines. This rule is so the faulty motor vehicle isn't going to derail the coaching as well as the subject automobile gets the concentrate rather than meeting the education objectives set to the class.

To start with day of training the shop supervisor informs me the products is faulty. This is often not beneficial news mainly because almost everyone in the education desires to operate the gear. I perform a easy check for the products and almost everything is so as. This teaching is carried out using a ProLink-IQ remaining operated by each student (one particular per student).

The instruction goes as planned along with the college students mastered the navigation of each of the accessible functions within the ProLink-IQ on Heavy-duty motor vehicles and Worldwide OBDII. We uncovered ourselves with some more class time and together with the new comprehending with the gear "dove" to the troubled Freightliner.

Very first thing the college students recognized is throughout the original communications the scan tool did not choose up each of the ECUs lively from the car. They cleared the U100 code and didn't start out the motor vehicle and carried out a key-on-engine-off (KOEO) communication scan. The car listed all of the ECUs existing ninja 250 fairing. As soon as the automobile was began along with the U100 set we no longer could talk together with the Antilock Brake Method (ABS) or Tire Stress Monitoring System (TPMS) system. We pulled the J1939 data bus schematics to see how the ECU network was communicating.

We performed a short check out on each of the terminators and identified them to become inside specifications. We then studied the wiring schematics and also the ABS/TPMS received its motor vehicle velocity from the TCM. We applied a lab Scope (VantagePro) to this circuit and monitored bus communication and watched the signal from your TPMS strategy end up being completely corrupt. The shop technician at this point confessed that he had currently plugged within a TCM and it didn't fix the issue and replaced the vehicle speed sensor. We did a continuity check to the communications wire concerning the TCM and also the TPSM and when wiggling the harness saw the continuity disappear and reappear. We ran a whole new wire as well as the situation from the U100 code transmission light illuminating was repaired. I checked-in using the shop various weeks later and also the truck continues to be down the road without difficulties. The shop makes use of the ProLink-IQ daily and with higher good results.

Lesson learned: Certainly not just exchange elements. If by using a scan tool you aren't familiar with, get assist or the good instruction so the instrument can enrich your skills.

Until subsequent piece of writing "keep Truck-en"