VE Factory HVAC Information

[ZerOne]

Automatic (Dual and Triple Zone) Climate Control Wiring Diagrams

Airconditioning Compressor Control



Temperature and Air Direction Control



Automatic Climate Control Input Sensors



Dual Zone Control

[ZerOne]

HVAC HCE Module X1 Connector

Code: Select all

Pin 1 - Orange - HVAC Blower Motor Control Wire
Pin 2 - Black    - Ground


HVAC HCE Module X2 Connector
WARNING : This information has been obtained from the factory workshop manual,
however it appears that this connector is completely different for Single Zone, and Dual one Climate Control
HCEs.....
As such, the information for this connector is not reliable !!!!!

Code: Select all

Pin A1 - Light Blue                         - Air Temperature Door Position Sensor
Pin A2  - Yellow / Black Stripe         - Mode Door Position Signal
Pin A3  - Brown                            - Recirculation Door Position Signal
Pin A4  - Gray                              - Rear Mode Door Position Signal
Pin A5  -                                     - Not Used
Pin A6  - Light Blue                       - Rear Passenger Air Temperature Door Control
Pin A7  - Light Green / White Stripe  - Rear Mode Door Control A
Pin A8  - Yellow                            - Air Temperature Door Contorl Low Reference
Pin A9  - Grey / Black Stripe            - Passenger Air Temperature Motor Control
Pin A10 - Yellow                            - Mode Door Control B
Pin A11 - Grey                              - After Boil Coolant Pump Relay Control
Pin A12 - Purple                            - Recirculation Door Control A
Pin B1   -  Dark Blue                       - Passenger Air Temperature Door Position Signal
Pin B2   -                                     - Not Used
Pin B3   -  Dark Green                     - Rear Passenger Air Temperature Door Signal
Pin B4   -  Purple                           - Rear Mode Signal Switch
Pin B5   -  Light Blue                      - Rear Temperature Switch Signal
Pin B6   -  Brown                           - Rear Passenger Air Temperature Door Control B
Pin B7   -  Light Green / Black Stripe - Rear Mode Door Control B
Pin B8   -  Dark Blue                       - Air Temperature Dor Control
Pin B9   -  White / Black Stripe         - Passenger Air Temperature Door Control
Pin B10  -  Tan                              - Mode Door Control A
Pin B11  -                                     - Not Used
Pin B12  -  Dark Green                     - Recirculation Door Control B


HVAC HCE Module X3 Connector

Code: Select all

Pin 1   -  Black                               - Mode Actuator 1 Control
Pin 2   -  Brown                              - Mode Actuator 1 Power
Pin 3   -  Grey                                - Mode Actuator 1 Feedback
Pin 4   -  Red                                 - Mode Actuator 2 Feedback
Pin 5   -  Black / Yellow Stripe           - Air Mix Actuator Feedback
Pin 6   -  Grey / Red Strip                 - Recirculation Actuator Feedback
Pin 7   -  Black                                - Evaporator Temperature Sensor Signal
Pin 8   -  Black                                - Evaporator Temperature Sensor Low Reference
Pin 9   -  Dark Blue / Black                - Low Reference
Pin 10  -  Black / Red                       - Low Reference
Pin 11  -  Light Green                       - Mode Actuator 2 Power
Pin 12  -  Orange                            - Mode Actuator 2 Control
Pin 13  -  White                              - Air Mix Actuator Power
Pin 14  -  Yellow                             - Air Mix Actuator Control
Pin 15  -  White / Black Stripe           - Recirculation Actuator Power
Pin 16  -  White / Blue Stripe            - Recirculation Actuator Control
Pin 17  -  Dark Green                       - 5V Reference
Pin 18  -  Pink                                - 5V Reference
Pin 19  -  Black / White                    - 5V Reference
Pin 20  -  White / Green                   - 5V Reference
Pin 21  -  Dark Blue                         - Low Reference
Pin 22  -  Light Blue                        - Low Reference


HVAC HCE Module X4 Connector

Code: Select all

Pin 23   - Dark Blue / White Stripe     - Dual Zone Air Mix Actuator Power
Pin 24   - Yellow / Black Stripe          - Dual Zone Air Mix Actuator Control
Pin 25   - Yellow / Blue Stripe           - Dual Zone Air Mix Actuator Feedback
Pin 26   - Yellow / Red Stripe            - 5V Reference
Pin 27   -                                      - Not Used
Pin 28   - Brown / White Stripe         - Low Reference
Pin 29   -                                      - Not Used


HVAC HCE Module X5 Connector
Warning : The pins for this connector are not available on single and dual zone HVAC Models.

Code: Select all

Pin 30   - Dark Green / Blue Stripe      - Mode Actuator Rear Power
Pin 31   - Dark Green / Red Stripe       - Mode Actuator Rear Control
Pin 32   - Dark Blue / Orange Stripe    - Tri Zone Air Mix Actuator Control
Pin 33   - Light Green / Red Stripe      - Tri Zone AIr Mix Actuator Power
Pin 34   - Light Green / White Stripe   - Mode Actuator Rear Feedback
Pin 35   - Pink  / Black Stripe             - Tri Zone Air Mix Actuator Feedback
Pin 36   - Dark Green / Orange Stripe  - 5V Reference
Pin 37   - Dakr Blue / Green Stripe      - 5V Reference
Pin 38   - Dark Green / Yellow Stripe   - Low Reference
Pin 39   - Red / Black Stripe              - Low Reference


[ZerOne]

Manual HVAC Wiring Diagrams

Air Conditioning Compressor Control



Blower Motor Control



Temperature and Air Direction Control

[prisky]

Hi, just wondering if the HVAC and associated sensors can be modified to achieve a lower temperature at the vents? I have heard about modifying resistance values to "fool" the control module into lowering these temps? I guess this would apply to the in car temperature sensor and evaporative temperature sensor? I'm not looking at anything rediculous, maybe a few degrees cooler. I'm finding the factory VE Omega A/C set to C and on recirculate just doesn't get cold enough. I'm aware if it's too cold we will get the evaporater freezing up, dependant on humidity levels. I've seen a few mods done to overseas cars (on the net) where this has been achieved.

[rucxy]

HVAC HCE Module X2 Connector

Pin Wire Colour Function
1 BN Low Reference
2 D-GN Inside Air Temp Sensor Signal
3 -------- --------
4 L-BU/BK LH Solar Sensor Signal
5 GY RH Solar Sensor Signal
6 WH/BU Rear Defog Relay Control
7 BN Low Reference
8 L-GN/BK Ambient Air Temp Sensor Signal
9 -------- -----------
10 D-GN Low Speed GMLAN Serial Data
11 --------- -----------
12 D-BU AC Compressor Clutch Low Reference
13 D-GN AC Compressor Clutch Supply Voltage
14 RD/WH Battery Positive Voltage

Came across this information from http://adair.com.au/news website under their Support sectionTechnical Service Bulletin (TSB74)

My 07 VE SV6 X2 Pinouts with Single Zone HVAC
use Pins 6, 10, 12, 13 & 14

[40STY]

So this might be a bit off topic, but I need some HVAC advise. Im doing an LS conversion into an old Firebird and am transferring the entire driveline and as much of the interior and gadgets out of a VE commodore (the donor car is actually a WM Statesman) as possible.

Im converting the whole VE A/C system (compressor, condenser, lines with the pressure sensor, HVAC interior unit, temp and sun sensors and blower motor) but need help to get it to run. I understand that the compressor is a VDC and needs the HAVC module and ECM to run it and change the displacement. Thats fine, because I'll have the ECM and BCM in the car.

My problem is the actual dash controls for the HVAC. The VE controls are integrated into one panel for both radio and A/C. The unit is too big to fit into the old school dash, so I need a way of controlling only the A/C without the radio.
My questions are:
1. Do all newer (post 2005) GM vehicles use the same language for GMLAN?
2. Would a dash control plate from another GMLAN vehicle (Im thinking GM USA cars that have a separate A/C control unit, like C6 corvette, Tahoe, Torrent, Silverado) talk to the HVAC module/BCM properly and give the correct signals (ie: will pressing the fan speed up button actually make the fan speed increase)?
3. If it is possible to use a control panel from another GMLAN car from the states, would it display temp in degress or farenheit?
4. Are there any other Holden models that use GMLAN for HVAC controls and have a separate panel that I could use?

[Morris70]

Would something like this solve your problem ?

http://www.folcik.com/products/hi002.htm#.U3MGsChTa8w

[40STY]

I had already checked that out, but dont really want a screen in the car because Im trying to keep the interior as stock looking as possible. Ideally I would like to keep the original dash slider controls (like the vintage air aftermarket Gen IV units do), but since the HVAC module needs GMLAN signals to control everything and not voltage from a potentiometer, its not possible to keep the original knobs. So knobs from another GM car are the next best thing. If this isn't possible either, then getting one of the Folcik touch screens will be a last resort.

[pir4te]

I have a VE Series II with both clutch and ECVD connectors, but I now have to use Camaro accessories, including air con pump.
Problem is that the new Camaro pump only has one connector that fits the VE clutch plug. No ECVD connector.
Using one of the two plugs it does starts for maybe a minute until ECU disconnects.
What is the easiest way to terminate the EVCD connector in order for the air con pump to work clutch only?

[ervich]

Hi gents, I have being trying to find information everywhere unsuccessfully so far, I have 08 WM Statesman with an air con problem, passenger side of the climate control set at hot and blowing hot air, driver side set on Hot, blowing cold air, irrelevant which direction airflow pointed. Compressor has being replaced and gas refilled on the air con expert advice Air con worked for 5 min, same thing no Hot air coming of the drivers side vents, after that system stopped blowing all together, after overnight battery positive off, started blow as a fan. It is duel zone auto head unit. When it stopped working after refill it came came with error "replace ECC". So called expert promise to ring me back next day, and it has been over 2 weeks ago. I have put charge back on my CC for compressor and refill, and trying to work out what to do and where to go. My question is: "ECC" somewhat different from" HVAC/HCM" or it is that "HCM" module? Should I try to replace "HCM" which I can get of the wreckers for about $65 or it is something else. Any positive advice is greatly appreciated.
P.S. I'm a bit reluctant to go to Holden it is $120 just to hook up, and sky is the limit from there.