so close to a year ago I posted about will I see all the issues that seem to plague our vehicles.
anyway 2 days ago I shut off the truck and the blower stays running, how many posts have we read about that,
I disconnected battery, replaced blower motor resistor, back to normal, except now i have traction control and antilock brake
warning lights on,cant find my code reader in my garage mess, anyway do we think its related to blower motor problem or disconnecting battery for 2 days?. i did try and disconnect battery again but no change, any ideas until i find my code reader?

thanks

 

I would start by ruling out any relays, and the ignition switch itself. One time after having my battery disconnect my HVAC control module in the dash started acting really weird, as well as no AC. Disconnecting the battery, touching both cables together to discharge any remaining power held in the system, reconnecting the battery.. turning ignition to the on position but not starting yet and watch the HVAC unit. It should go through about a 10 or 15 second reinitialization. That cured my problem anyway, on a 2003 H2. Sort of a complicated system. Don't forget that when you turn the vehicle off you still have power to several functions until you open the door. Obviously triggered by the lock actuator sending a signal to the module in the driver's door. As always, with any electrical issues, check and clean all grounds. A bidirectional scanner or one of the tech 2 Chinese clones come in handy.

 

@zapshd
it's difficult to link the Blower Motor Controller (Resistor) to the fault you describe, its probably either

• coincidence
• something's been disturbed
• a newfault has developed

the DTC will provide essential data.

 

Yeah..L.O.L. I know when I shift the transfer case to 4 low..you get the traction control and anti skid off lamp on. Now I'm no super smart guy here but I'll throw this out knowing how these computers send us on all kinds of wild chases. Do you have the lamp on for this? Is it possible that some how the anti skid and traction control got messed up in this to send you into the forest of WTF happened?

I know the Blower motor has nothing to do with Traction control and Anti Skid.... But is it possible that your 2 is screwing with you?

 

Ah, I had to reread the original post and missed that the HVAC blower is working fine.

So you've got a completely separate problem unrelated. LOL, well it's pointless with the HVAC fan, for peace of mind I would probably unplug the resistor and see if the other functions return to normal. 99.9% unlikely, but H2S are known to have bizarre issues when none OEM parts are used. (ie; a Walker brand camshaft position sensor will work fine. Every time you turn the key it sends the proper signal to the PCM. But every other attempt to start results in a no start situation. Verified by the dealer, the guy said it made no sense but he confirmed my test results. OEM camshaft position sensor solved the problem. Even though the Walker brand showed the correct signal being sent.) Just for peace of mind I would unplug it and see if there's any change. Stranger things go on with H2S.

More likely you have something going on with your ABS system/Brakes. I would do a physical hardware check first, check all brake lines and wires. Have any issues with mice? My gut instinct is the traction control light is on because you have an ABS problem. Traction control won't work without a functioning abs. I'm afraid we're back to needing a bi-directional scanner or a tech 2 if you find out there's no code stored.

 

went away for a long weekend just got back to see posts, i reconnected battery after being disconnected for days, ac works
fine blower etc but still have faults, will find my code reader and let you know what I find thanks
blower motor doe have a slight squeak to it when in low speed, going to change blower motor too, soon

 

Removing the power for long periods should make no difference, any on-board components should have completely discharged within minutes and in any case Power-On Reset circuitry should completely reboot the ECU's once power is restored.

Defective components can behave unpredictably, but in any case retrieving the Diagnostic Trouble Code(s) will mostly likely resolve any apparent mystery, like a treasure map. The braking system is important !!!

If the blower motor has a "squeak" this may indicate partially seized bearing and could the root cause for the "Resistor" (BMC) failure i.e. current overload.

Pretty much agree with @RobertDez also consider any other seemingly unrelated work that's been done recently.

fyi:-
The following conditions will cause the TRAC OFF indicator to illuminate:
• The EBCM has disabled the TCS due to a DTC.
• The EBCM has disabled the TCS due to a overheated ABS/TCS hydraulic unit.
• The IPC bulb check. When the ignition switch is turned to ON, the TRAC OFF indicator will turn ON for approximately 5 seconds and then turn OFF.

 

Lube the bearing>

3-IN-ONE

3-IN-ONE

Works on ALL noisy motor bearings, door hinges, etc... to stop the annoying squeak.

 

I know I will catch crap for this comment, Don't to forget to check the condition and the voltage of the battery plus also make sure your grounds are good. I once had a problem on my 06 with the "Service 4wd" error, after screwing around with switches, actuators and what nots it turned out to be a simple ground connection on the frame under the truck. On top of that the battery was also on the way out which aggravated the situation.

 

Thought my old scanner would do abs and traction control. But doesn’t. Have to wait for time for my friend to throw on his scanner

definitely all good advice about grounds etc. but coincidence or not. The blower resistor going bad did not cause the faults. I turned truck on and off
multiple times with blower running with key off. Had no faults. Only when I disconnected battery and reconnected it did it occur.