Auto A/C HVAC Fan only work on speed 4

I have a problem with my 2003 pathy that is listed in the bulletins. (Auto A/C HVAC fan only works on speed 4). I have 3 questions if someone can help me. First, if a bulletin is listed does the dealer cut you any discounts on repair costs? or Can I fix this myself if I'm somewhat handy? If I have to do it myself where could I find instructions?

Thanks

[NissanTech]

Welcome to Nissanhelp.com!

if a bulletin is listed does the dealer cut you any discounts on repair costs?

No

Can I fix this myself if I'm somewhat handy?

Yes, definitely.

If I have to do it myself where could I find instructions?

I try to add the instruction in this post later, but is very simple.

Thank you, I apprecaite the help.

[NissanTech]

Hello

1. Remove glove box. (See figure 1 for pin locations)
2. Remove the dash finisher and dash lower cover (See Figures 2,3,4,5 for clip locations)
3. With the lower cover removed, remove the 2 screws holding the the amp and replaced with new one. (See figure 6)

Nissan Tech,

I replaced the control amp. You were right it only took a few minutes, unfortunately it didn't solve the problem. The fan still runs on high when in Auto or Econ modes. I notice that the temperature of the air is affected by the theromstat setting but it will only run full speed. Any other possiblities?

[vancbc]

Originally Posted by NissanTech

Hello

1. Remove glove box. (See figure 1 for pin locations)
2. Remove the dash finisher and dash lower cover (See Figures 2,3,4,5 for clip locations) 3. With the lower cover removed, remove the 2 screws holding the the amp and replaced with new one. (See figure 6)

Hey thanks for your replacement instructions, I need to pick up a new part and replace it tonight or tomorrow AM before I drive from Beantown to NYC for the weekend.

Since I am using your instructions, I thought I should say thanks, also, I put the instructions into a PDF as I wanted to print it so it is in a one file.

Can be found here, or in attachment.

[hommey]

I am able to identify the area which correlates most to the diagram displayed above, and also the Relay itself...

However, it seems as though the resistor is made of a hard plastic which is fused onto the hard black plastic fan box...

How does one remove this? Is that a cover, which I must remove first?

I have already completely removed the glove box, and glove box assembly.

Thanks

[scabbeus]

I have a 1998 Pathfinder and my fan stopped blowing. IS it possible that leaves could make down to the fan assembly and impede the blade?

Thank you!

[hommey]

Originally Posted by hommey

I am able to identify the area which correlates most to the diagram displayed above, and also the Relay itself...

However, it seems as though the resistor is made of a hard plastic which is fused onto the hard black plastic fan box...

How does one remove this? Is that a cover, which I must remove first?

I have already completely removed the glove box, and glove box assembly.

Thanks

Forget it, a friendly mechanic I know found it for me... It is actually in the lower right hand side, underneath everything... :( against the back panel...

[Hammy_tn]

Hommey, i sent you a private message. Hammy

[Hammy_tn]

Originally Posted by scabbeus

I have a 1998 Pathfinder and my fan stopped blowing. IS it possible that leaves could make down to the fan assembly and impede the blade?

Thank you!

the 98 control is different from the 2002. yours is manual. your problem is a resistor or the fan itself. you can test the fan by hooking 12v directly to the fan and seeing if it turns. if it does then the resistor is bad more than likely. Hammy

[Hammy_tn]

just a follow-up. i replaced the module and everytrhing worked fine. One of the main causes of this module failure is failure to replace the IN CABIN AIR FILTER. Nissan originally stated to replace this filter every 30,000 miles or 1 year. However they changed the service procedure to 15,000 miles or 1 year. I didnt even know this car had one. :confused: I removed the filter and it was VERY dirty. I found evidense it had been changed 30 months ago, or 50,000 mikes ago.

[hommey]

Originally Posted by Hammy_tn

just a follow-up. i replaced the module and everytrhing worked fine. One of the main causes of this module failure is failure to replace the IN CABIN AIR FILTER. Nissan originally stated to replace this filter every 30,000 miles or 1 year. However they changed the service procedure to 15,000 miles or 1 year. I didnt even know this car had one. :confused: I removed the filter and it was VERY dirty. I found evidense it had been changed 30 months ago, or 50,000 mikes ago.

umm... where is the in cabin air filter?
thanks

[Hammy_tn]

here is a link to the filter replacement. i looked at my system and never found the filter til reading these instructions.

In-Cabin MicroFilter Installation Instructions (page 1 of 2)

Hammy

[mantis102]

Does anybody know the part number for the amp?? I have an 02 Pathfinder SE with manual air conditioning. Thanks for the help!!

[mpe235]

Originally Posted by mantis102

Does anybody know the part number for the amp?? I have an 02 Pathfinder SE with manual air conditioning. Thanks for the help!!

If you don't have auto hvac then you don't have an amp. Your system uses a blower resistor which is much cheaper than the amp. Part #27150-0W014 $45.98.

[mantis102]

Thank you for the fast reply!! Is this part also located near the blower behind the glove compartment?? Is it similar to the procedure for replacing the amp??

[mpe235]

Originally Posted by mantis102

Thank you for the fast reply!! Is this part also located near the blower behind the glove compartment?? Is it similar to the procedure for replacing the amp??

It is toward the firewall just behind the blower. You can get to it without removing the glove box.
I checked aftermarket prices. Napa, autozone and advance auto all are about $52.00

[PivoArch]

Thanks for this forum I'm hoping it is going to save me a few hundred on this fix. I just want to be sure I am getting the right thing I have an 02 Pathy with the climate control system and my fans are now stuck on high. So, I would need to buy and amp right? The resistor is for the manual controlled HVAC.

Also, where do you guys get your part from the dealer near me wants $150 for the amp. I managed to find it on courtesyparts.com for $110, just wondering if anyone has ordered from that site before? Here is the link to the part I am going to order if someone could let me know that it is the right part.

http://http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CP&Product_Cod e=27761-70T03

[Hammy_tn]

I just did the same thing on my 02. I paid 138.00 for mine thru the local dealership. The part number is 27761-70T03 The box also has a number on it of 71030. One thing to look at closely. The reason this controller faiiled is due primarily to a blocked cabin filter. The filer is part number **** and costs about $48.00. If you dont replace the filter you will be replacing the control module again REAL soon. Feel free to give me a call at 931-632-0345 Hammy

Originally Posted by PivoArch

Thanks for this forum I'm hoping it is going to save me a few hundred on this fix. I just want to be sure I am getting the right thing I have an 02 Pathy with the climate control system and my fans are now stuck on high. So, I would need to buy and amp right? The resistor is for the manual controlled HVAC.

Also, where do you guys get your part from the dealer near me wants $150 for the amp. I managed to find it on courtesyparts.com for $110, just wondering if anyone has ordered from that site before? Here is the link to the part I am going to order if someone could let me know that it is the right part.

http://http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CP&Product_Cod e=27761-70T03