Medium and Heavy Trucks

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Medium and Heavy Trucks

2003 freightliner Columbia yesterday cab and sleeper blower

Customer Question
motors working fine also high...
2003 freightliner Columbia yesterday cab and sleeper blower motors working fine also high beam lights working , this morning blower motors not working and no high beam lights
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so the Heavy Truck Mechanic can help you best.
Customer: where should I start to check problems, first thing I was thinking was key switch since it needs to be on for high beams and blower motors to work
JA: Anything else I can tell the Heavy Truck Mechanic before I connect you two?
Customer: no
JA: I'm sending you to a secure page on JustAnswer so you can place the $5 fully refundable deposit now. While you're filling out that form, I'll tell the Heavy Truck Mechanic about your situation and connect you two.
Submitted: 1 year ago.Category: Medium and Heavy Trucks
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Answered in 2 minutes by:
4/13/2016
Technician: Daniel Wilson,
 replied 1 year ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 5,702
Experience: Owner at DJ Wilson
Verified
Hi my name is ***** ***** be glad to help. Do all other cab accessories work? What codes do you have logged in the dash display and do you need the information on how to access them?
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Customer reply replied 1 year ago
yes other accessories work fine
Technician: Daniel Wilson,
 replied 1 year ago
Sam cab fault codes?
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Technician: Daniel Wilson,
 replied 1 year ago
Usually HVAC and headlight circuits will throw a fault code in the dash for the problem circuit and type of failure to help isolate where to start testing and troubleshooting.
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Customer reply replied 1 year ago
how do I check to see if there are any codes
Technician: Daniel Wilson,
 replied 1 year ago
Click on this link and see the PDF page 17 for the instructions to access the codes.Drivers manual
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Technician: Daniel Wilson,
 replied 1 year ago
Link wont post.... Copy and paste this one in your browser.http://www.selectruckhouston.com/pdf/New_Folder3/columbia-driver's-manual.pdf
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Technician: Daniel Wilson,
 replied 1 year ago
You press and hold the mode button to scroll through.... Hold to get to next menu and press to scroll through that menu. The info will display in the odometer screen.
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Customer reply replied 1 year ago
Only gives me a 404 error will mot onpen your link
Customer reply replied 1 year ago
This truck does not have that mode button you speak of
Technician: Daniel Wilson,
 replied 1 year ago
Ok. Well since you have an 03 you might not have it..... Newer models have it in the smart wheel and on the dash to access diagnostics through the dash
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Technician: Daniel Wilson,
 replied 1 year ago
Ill get some schematics for you to help.
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Technician: Daniel Wilson,
 replied 1 year ago
Click on this link to access the sleeper HVAC info.Schematics
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Technician: Daniel Wilson,
 replied 1 year ago
AlsoDiagram
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Customer reply replied 1 year ago
Ok i got those
Technician: Daniel Wilson,
 replied 1 year ago
PDM Click the links above. These diagrams should help testing your circuit. Test all your fuses for power on both sides using a test light probing the top metal tabs of the fuse. There should be power on both sides with the key on. Any fuse with power only on one side is bad. Check your relays by swapping one at a time with a known good one..... Inspect the harness and connector pins for damage or corrosion.
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Customer reply replied 1 year ago
Ok will advise after this is done
Technician: Daniel Wilson,
 replied 1 year ago
Sounds good. Pleasure to help.
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Technician: Daniel Wilson,
 replied 1 year ago
Start at the PDM ( Power distribution module/ fuse panel) there are two... one in the b pillar and the main one.
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Customer reply replied 1 year ago
Still no luck fuses and breakers good
In both locations
Customer reply replied 1 year ago
Still no luck fuses and breakers good
In both locations
Technician: Daniel Wilson,
 replied 1 year ago
We need to try to get body controller codes.When the parking brake is applied, pressing themode/reset button will scroll through the followingscreens:i.Trip distanceii.Trip hoursiii.Outside temperatureiv.Select screenv.Temperature alert screenvi.Diagnostic screenvii.Clear screen (with less than 254 miles)viii.Engine milesix.Engine hoursx.Set up screenxi.Back to odometer
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Technician: Daniel Wilson,
 replied 1 year ago
Mode/Reset ButtonFunctionsThe mode/reset button (seeFig. 4.6) is located onthe right side of the instrument cluster.
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Customer reply replied 1 year ago
This truck doesnt have that dash in it
Technician: Daniel Wilson,
 replied 1 year ago
Have you tested power at the PDM for the HVAC and tested the relays? Is there power at the blower motor connector? How far did you get with testing and tracing out the schematic? Let me know
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Customer reply replied 1 year ago
Tested all hvac relays fuses
No power at blower? What does the high beam switch and blower motors have in common
Since neither cab nor sleeper blowers are working nor the highbeams
Key switch problem??
Customer reply replied 1 year ago
Something is failing to tell those acc to power up
Technician: Daniel Wilson,
 replied 1 year ago
the PDM is the common link. Test the pins at the PDM in the link I supplied for power and ground for those circuit locations. Check for corrosion at the terminals and damaged connections. Possible faulty PDM
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Customer reply replied 1 year ago
Ok, i will
Wont be for awhile before i can
Technician: Daniel Wilson,
 replied 1 year ago
thats ok, We can post back and forth as needed.... Keep me posted...
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Daniel Wilson
Daniel Wilson
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 5,702
5,702 Satisfied Customers
Experience: Owner at DJ Wilson

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