A/C radiator fans - when does each come on?
03-19-2009, 02:54 PM
#1
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A/C radiator fans - when does each come on?
I've discussed this here some before, but never a clear answer, so before I put out some cash, I'm hoping for a definitive answer.
I've looked in the service manual, but can't find what I'm looking for.
When do each of the radiator fans kick on?
I ask because only the driver's side one in my car runs, regardless. I think the passenger side is supposed to kick on when the A/C is running (and thus provide cooler air) but I can't seem to confirm this.
Anyone with a detailed answer?
Thanks!
I've looked in the service manual, but can't find what I'm looking for.
When do each of the radiator fans kick on?
I ask because only the driver's side one in my car runs, regardless. I think the passenger side is supposed to kick on when the A/C is running (and thus provide cooler air) but I can't seem to confirm this.
Anyone with a detailed answer?
Thanks!
03-19-2009, 03:25 PM
#2
One should operate when the compressor is on, correct. When above the trigger point, I believe both fans will run according to the data above.
Last edited by pmohr; 03-19-2009 at 03:29 PM.
03-20-2009, 05:46 AM
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03-20-2009, 06:13 AM
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Thanks for the info. I'm lost as to where in the FSM it is though. I looked everywhere in the HA section for this.
So now I've gotta dig in and figure out why my passenger side cooling fan never kicks on...does the FSM have a troubleshooting chart for that or should I just start at the fan motor and work my way out?
So now I've gotta dig in and figure out why my passenger side cooling fan never kicks on...does the FSM have a troubleshooting chart for that or should I just start at the fan motor and work my way out?
03-20-2009, 06:40 AM
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Both fans should run.
Use a multi meter, check for voltage at the dead fan's plug when the other is operating.
Got voltage - replace fan.
No voltage - check wiring, relays and fuses.
Troubleshooting 101
Use a multi meter, check for voltage at the dead fan's plug when the other is operating.
Got voltage - replace fan.
No voltage - check wiring, relays and fuses.
Troubleshooting 101
03-20-2009, 06:44 AM
#9
Thanks for the info. I'm lost as to where in the FSM it is though. I looked everywhere in the HA section for this.
So now I've gotta dig in and figure out why my passenger side cooling fan never kicks on...does the FSM have a troubleshooting chart for that or should I just start at the fan motor and work my way out?
So now I've gotta dig in and figure out why my passenger side cooling fan never kicks on...does the FSM have a troubleshooting chart for that or should I just start at the fan motor and work my way out?
It's in EC, under P1900 - Cooling Fan.
).
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