1991 940se ECC light flashing

dougnelson · Post by **dougnelson** » 07 Jul 2014, 18:55

Replaced the blower motor tonight on my 91 940 with a used motor I got from a Volvo mech in town. Got car back together and now the AC button flashes and blower motor does not work. I have some sort of ECC error. Any ideas?

Thanks
Doug

93Regina · Post by **93Regina** » 07 Jul 2014, 22:49

dougnelson wrote:ECC error. Any ideas?

Snippets:

1. "SELF-DIAGNOSTICS - The Electronic Climate Control (ECC) control module can
detect faults in the system and store Diagnostic Trouble Codes (DTCs).
If a fault is present, system informs driver by flashing AC OFF and
REC switch LEDs for 20 seconds.
A fault warning is given when a fault is discovered or
present each time ignition is turned on or engine started. DTCs will
remain stored until cleared by an input code."

2. Volvo 960 climate control & heater system repair manual

dougnelson · Post by **dougnelson** » 08 Jul 2014, 07:39

Thanks a lot. I will give this a try.

Doug

dougnelson · Post by **dougnelson** » 10 Jul 2014, 15:46

Went through the Self Diagnostics and got error code 233 (Fan Motor Excessive Starting Current) any ideas of where to start. The blower motor was going bad and I replaced it with a new one and now I'm getting this code and the fan will not work at all.

lummert · Post by **lummert** » 10 Jul 2014, 16:24

Are you sure the fan motor is a good one?

dougnelson · Post by **dougnelson** » 10 Jul 2014, 18:25

Brand new out of the box. I guess I could check it vice assuming it works. Thanks
Doug

93Regina · Post by **93Regina** » 10 Jul 2014, 20:31

dougnelson wrote:Went through the Self Diagnostics and got error code 233...

I'd check current draw on fan with 12 Volts going to it. I would suspect there are some resistors on a board somewhere, maybe a resistor has shot craps, and/or the fan switch is bad. I know nothing here.

Is there a relay involved...it might be the issue.

Tidbits: Heating and Air Conditioning