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Discussion Starter · #1 ·
AC blows hot.
Error codes P0691 P1682 (see pictures)
Recharged the AC, low port, to a normal (green level) pressure
Fuse 36 in engine bay is blown. Replaced with a new one.
Cleaned ground contacts near fuses/battery area.
Cooling fans are spinning like crazy, even when driving. They stop when car is parked.
All above didn't resolve the issue (I mean it started blowing ice cold after AC recharge while car was parked but then after 5 min drive AC blows warm).
DTC can not be cleared.
Also searched this forum before posting....

Anyone? AC compressor? Thanks!
 

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P0691 is radiator fan malfunction. It prevents AC.
P1682 is plausibility fault between +15 and main relay.
 

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Discussion Starter · #3 ·
Thank you mimmi.

I've replaced radiator fan relay. Everything started working. Fan went nicely on Med then on Low. P0691 got cleared. AC was ice cold. But...this was good for 5 minutes.....

20A Fuse 36 got blown. Fan stopped working. Replaced Fuse 36. Works for a minute then gets blown. Reconnected fan relay connector, replaced Fuse 36 again. So far it is working.

Two days ago did oil filter change, perhaps I touched fan relay connector?

What would cause Fuse 36 to burn?
 

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Discussion Starter · #5 ·
Thanks. Agreed.

Radiator Fan Control unit has been replaced. This hasn’t resolved the issue.

P0691 Engine Coolant Blower Motor 1 - Short on Earth error message is self explanatory.

so…..if Radiator Fan Control replacement didn’t fix the problem then the next steps would be to find shortage on Motor 1 or Main connector ( oil filter change was done 2 days prior the problem)

  • Motor 1 - is it on driver or pass. side?
  • Short on Earth troubleshooting on main fan connector- what’s the best way? - visual inspection, move connector to the left or right, etc…? Or I should take voltmeter and read values from connector?
 
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