Medium and Heavy Trucks
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Hi my name is ***** ***** will be glad to help. Check for a loss of power to the ABS or from the PDMs. That fault is for a loss of power.
Your power circuits should be 376a and 376c1 into the B pillar PDM and 376a should be pin 8 at the ABS ECU plug and 376c1 pin 7.Pins 4 and 9 are grounds.The only wiring that goes through the plug on the bottom of the cab are for the sensors and ABS solenoids, all your power supply and ground wires for the ABS ecu are routed in the cab.Circuit 1204(GROUND) goes to a stud in the B-pillar. The schematics will help identify the wiring and terminal pin locations in the connectors. Confirm the voltage to battery voltage using a volt meter instead of a test light in case you are getting under battery voltage in the circuit as well. Test your grounds with an OHM meter. Let me know
Click on this link for some diagrams to help in troubleshooting.
Do have a complete electrical Manual for the Columbia I can offer at a premium service if you are interested I will post the offer. Review what ive posted and let me know if you need further schematics.
Click on this link.
Hi, I help on here in between jobs and as I am able. Experts are not employees of the site. Experts only get credit for their time on accepted answers and positive feedback for a percentage of the question value. It is a holiday weekend and I am with my family who is visiting for the long weekend. I have not had time to look through the schematics as of yet to walk you through this.
B pillar 1
B pillar 2
B pillar 3
Let me know if these match up to your PDM better.
I have nothing to do with how the site advertises and their communication to you other than what I type in this chat. I was at the White mountains in NH all day so I was definitely not logged in here so that is a technical issue with the site. Ill opt out so someone else can help you sooner. Good luck.