All controls in the car light up and work ( fan speed +/-) but heater fan/motor doesn't actually start up.
Internal fuses all showing good, but is there any other fuses for the heater fan hidden away anywhere ?
Can't get to my Bentley manual for a week so any help would be appreciated.
Thanks
Heater fan/motor stopped working
Re: Heater fan/motor stopped working
Check the following fuses:
Number 15 (10A)
Number 25 (30A)
Number 26 (30A)
Number 5 (10A)
If it's none of those then get a scope on the motor connections to see if any signal is getting to it. It's probably PWM so you might not get a meaningul reading with a multimeter. Still worth trying, though, if that's all you've got.
Number 15 (10A)
Number 25 (30A)
Number 26 (30A)
Number 5 (10A)
If it's none of those then get a scope on the motor connections to see if any signal is getting to it. It's probably PWM so you might not get a meaningul reading with a multimeter. Still worth trying, though, if that's all you've got.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Heater fan/motor stopped working
Also, check to see if the fan spins freely.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Heater fan/motor stopped working
Thanks Shopp.
All four fuses you mentioned are ok.
'PWM' meaning ?
I was even able to do a scan with VCDS , but the log didn't copy onto a flash drive !!! even though i opened 'location' and it showed me it in there.( its not on the laptop either)
I'll charge the car at the weekend and do another scan.
All four fuses you mentioned are ok.
'PWM' meaning ?
I was even able to do a scan with VCDS , but the log didn't copy onto a flash drive !!! even though i opened 'location' and it showed me it in there.( its not on the laptop either)
I'll charge the car at the weekend and do another scan.
Re: Heater fan/motor stopped working
PWM = Pulse Width Modulation. It means the 12v is pulsed at different frequencies to get different motor speeds. Looking at pics of the motor it looks like you might be able to power it directly to see if it spins.
There's a fan controller J126 between the climatronic and the fan.
New fans on Autodoc aren't very expensive.
There's a fan controller J126 between the climatronic and the fan.
New fans on Autodoc aren't very expensive.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Heater fan/motor stopped working
If that's not it, then it could be your climatronic unit. That would be a PITA.
Connect to the HVAC with the Vagcom and run the output tests to see if you can get the fan to blow.
Connect to the HVAC with the Vagcom and run the output tests to see if you can get the fan to blow.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Who is online
Users browsing this forum: 111marc111, B_O_N_K and 207 guests