Thread: Air Con Blower fan

I would be looking for a bad connection starting from the connector at the fan and working my way back. A test light would be a good thing to use, as it puts a load on the circuit.
It looks like your earth connection is okay as the fan works when you apply 12v direct.
I need to look at RAVE first, to get an understanding of the circuit before I can comment further.
Good luck.

Hi Greg

The ATC ECU performs a diagnostic check each time the ignition is switched on. To avoid nuisance fault indications at low light levels, the sunlight sensor is omitted from the diagnostic check. If a fault is detected, the audible warning sounds three times and the AUTO window on the control panel display flashes for 20 seconds. The ATC ECU then reverts to normal control but uses a default value or strategy for the detected fault. Faults are identified by performing a manual diagnostic check of the system.

A manual diagnostic check includes a check of the sunlight sensor, and is initiated by pressing and holding the AUTO switch and the air distribution switch, then turning the ignition switch from off to on. The audible warning sounds once and the indications on the control panel display illuminate. FC is shown in the LH temperature window and the results of the check are shown as a two digit fault code in the RH temperature window. If a fault is detected, the audible warning sounds three times and the AUTO window on the display flashes on and off for 20 seconds.

If more than one fault is detected, the fault codes cycle in numerical order, at 1 Hz. The audible warning sounds as each fault code is shown. In low light conditions, to avoid false sunlight sensor fault indications, the sunlight sensor should be illuminated with a strong light source.


Diagnostic fault codes and fault descriptions Code Component Fault Default value/strategy
00 - No fault found
11 In-car temperature sensor Open or short circuit 25C (77F)

12 Ambient temperature sensor Open or short circuit 10C (50F) Cooling fan permanently on
Display shows "- -" if external air temperature selected

13 Thermistor Open or short circuit 0C (32F)

14 Heater coolant temperature sensor Open or short circuit 70C (158F)

21 Sunlight sensor, left output Open or short circuit No solar heating correction

22 Sunlight sensor, right output Open or short circuit No solar heating correction

31 LH temperature servo motor Open or short circuit Motor or flap mechanism seized
Servo motor locked in position

32 RH temperature servo motor Open or short circuit Motor or flap mechanism seized
Servo motor locked in position

33 Distribution servo motor Open or short circuit Motor or flap mechanism seized
Servo motor locked in position

Good Luck

Craig

I have carried out the manual diagnostic check, with no faults found.

Unfortunately, it looks like I need to chase an electrical problem, somewhere.

Greg

Keep looking mate, it's probably something really trivial like a bad earth somewhere. Have you tried changing the climate control panel in the dash?. Maybe there's something amiss in there?? They come up on eBay for not a lot of money.
Regards
Robbo

I've got error #32 with mine. Damn thing beeps incessantly at me each time I turn the key.

Greg,
did you solve this problem? my TD5 2000 is doing the same thing - just started the other day.

regards
Steve

If fuse F7 interior fusebox is good there are two relays involved in the fan's feed, one for the earth path and one for the live, se what's missing then check C0901 = earth and C0153 = live (RAVE -Electrical library- connector views)

in the pic they appear C901 and C153

Sierrafery,
thanks - I will look at those on the week end.

regards
Steve