Electric heater matrix C5 wiring

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slackgarry
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Electric heater matrix C5 wiring

Post by slackgarry »

Afternoon everyone, I am looking for a wiring diagram on how the Electric heater Matrix connects to the car.

Details of car are CITROEN C5 2009 2.0 HDI DIESEL Make of ELECTRIC HEATER MATRIX is "BEHR G7192002"

Thanks for the help.
Kind regards

SlackGarry
Black 2008 C1, Petrol, 1KR-FE Engine. aka the GoKart
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GiveMeABreak
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Re: Electric heater matrix C5 wiring

Post by GiveMeABreak »

There is no electrical connection to the heater 'Matrix' - are you referring to the passenger compartment air heating resistance module, shown as part (4)? The car heater 'matrix' supplies hot coolant for the main heating of the interior of the vehicle.

The Air Heating Resistance (4) is a supplementary air heating resistor to help with rapid demisting / defrosting of the windscreen on cold days and to help warm up the cabin until the engine gets to temperature.
Slack A.PNG
If not this, then perhaps you can advise of what the issue is?
Please Don't PM Me For Technical Help

Marc
slackgarry
Donor 2023
Posts: 45
Joined: 17 Apr 2020, 11:38
Location: North Yorkshire
My Cars: Black 2008 C1, 1KR-FE Engine. aka the GoKart
x 2

Re: Electric heater matrix C5 wiring

Post by slackgarry »

Thanks Marc, thats just what I need, Can you provide how "(4) passenger compartment air heating resistance module" is wired please.

Chears
Kind regards

SlackGarry
Black 2008 C1, Petrol, 1KR-FE Engine. aka the GoKart
User avatar
GiveMeABreak
Forum Admin Team
Posts: 36990
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: Electric heater matrix C5 wiring

Post by GiveMeABreak »

X7 Resistance.PNG
Disconnect the connector (Heater element) .
Unclip the connector (Heater element) at "a".

Remove:
  • The earth bolt (3)
  • The (1) bolt
Remove the passenger compartment air heating resistor (2).

Refit:
  • The cabin air heating element (2)
  • The (1) bolt
  • The earth bolt (3)
Refasten the connector (Heater element) as "a".
Reconnect the connector (Heater element).

Have a look at my X7 Pollen Filter replacement guide, where you will see how to remove the passenger side footwell trim to get to it here:

viewtopic.php?t=56904

There is a picture (J7 & J8) that show this., but it may help with seeing where the trim clips are...

As for the wiring:

The passenger air heater element contains 3 resistive elements.
The resistive elements are Positive Temperature Coefficient (PTC) elements.
When it is commanded, the current passes through the resistance and causes heat to be released.

There is a black 4 way connector.
Pin 1: PTC 1 control
Pin 2: PTC 2 control
Pin 3: PTC 3 control
Pin 4: Earth
Please Don't PM Me For Technical Help

Marc
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