2014 ds4 heater fan not working

[Ted]

Hello, I have a citroen ds4 2014 vin VF7**************[VIN obfuscated, can be read by forum staff], my heater fan has stopped working, I have power and earth down to the control module, and power up to the fan, but no earth at fan, so I suspect the control module to be at fault, changed the module still not working? Any ideas where to look next. Many thanks ted

[GiveMeABreak]

Just be aware of parts quality. You can get cheap blower control modules that simply don't work. Get a decent branded version as we've seen similar stories multiple times here. ECP seem to be the worst for these sorts of things.

[Ted]

Does anyone know where I can a wiring diagram for the heating system on my car?

[GiveMeABreak]

Here's the wiring diagram for your vehicle, but also be aware that your DS4 has an outstanding after sales campaign being flagged up. Give Citroen a call and they'll be able to tell you what it's for, but whatever it is it will be free of charge. Some of these can be a simple s0oftware update, but others can be more significant...




The blower Motor Control Module is 8045 where not attached to the Blower Motor itself.