There's a lot of info in the Ampera service manual that is floating around. I was interested in that valve as well so I pulled the relevant pages out. Attached.
Chevy Volt / Opel Ampera 3-way valve
As a radiator bypass valve I'd like to try to use a 3-way valve from a Chevy Volt.
Part = 22830923
Has anyone else used it?
I've got two main questions:
- Is the electrical connector available somewhere (it's a six pin)?
- What is the pinout for controlling it?
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Hope someone already figured this out.
Otherwise it will be trial and error (with not too much error I hope)
Part = 22830923
Has anyone else used it?
I've got two main questions:
- Is the electrical connector available somewhere (it's a six pin)?
- What is the pinout for controlling it?
Hope someone already figured this out.
Otherwise it will be trial and error (with not too much error I hope)
1 - 14 of 14 Posts
Thanks @Swoozle did not expect the input would be that perfect!
I'm quite sure I would not have been able to figure that out by trail and error.
I used my Arduino Mega and a PWM frequency of 980 Hz building on the recommendations and it works like a charm!
Duty cycle 75% = link position = flow from top to bottom outlet and 3,3V on sensor signal pin (#4)
Duty cycle 25% = bypass position = flow from top to right outlet and 2V on sensor signal pin (#4)
Top/bottom/right as per attached photo.
![Electronics Electrical wiring Auto part Technology]()
I'm quite sure I would not have been able to figure that out by trail and error.
I used my Arduino Mega and a PWM frequency of 980 Hz building on the recommendations and it works like a charm!
Duty cycle 75% = link position = flow from top to bottom outlet and 3,3V on sensor signal pin (#4)
Duty cycle 25% = bypass position = flow from top to right outlet and 2V on sensor signal pin (#4)
Top/bottom/right as per attached photo.
Well. the fact that also for the 4-way valve pin #4 was the signal pin was wishful thinking. I got myself a 4-way as well and got it to work
- pin 3 = unused
- pin 4 = feedback for position
- pin 5 = GND
- pin 6 = 5V
In case
pin 1 = 12V and pin 2 = ground, the valve goes to the Chiller position and the feedback pin gives 1,84V (after disconnecting 12v)
pin 2= 12V and pin 1 = ground, the valve goes to the Radiator position and the feedback pin gives 3,24V (after disconnecting 12v)
If you want the valve to be in the bypass position, you need to apply 12 volt and at a certain point. Then (with 12V disconnected) the feedback is 2,54 V
I'm not sure whether the valve likes or needs 12V. When I feed pin 1_2 with a 1.5V penlite battery it moves as well and much slower.
See attached photo for outlet references.
![Wire Auto part Electrical wiring Electrical supply Plumbing]()
- pin 3 = unused
- pin 4 = feedback for position
- pin 5 = GND
- pin 6 = 5V
In case
pin 1 = 12V and pin 2 = ground, the valve goes to the Chiller position and the feedback pin gives 1,84V (after disconnecting 12v)
pin 2= 12V and pin 1 = ground, the valve goes to the Radiator position and the feedback pin gives 3,24V (after disconnecting 12v)
If you want the valve to be in the bypass position, you need to apply 12 volt and at a certain point. Then (with 12V disconnected) the feedback is 2,54 V
I'm not sure whether the valve likes or needs 12V. When I feed pin 1_2 with a 1.5V penlite battery it moves as well and much slower.
See attached photo for outlet references.
Next question is, which one do you recommend using in my project? I see pros and cons for both:
3-way
pro = easier to control and less hoses
con = less ideal flow in non-radiator circumstances
4- way
pro = better flow when radiator not in use
con = more difficult to control and more crowded in terms of hoses
3-Way
Pump gets fed either via radiator or heater (might be on or not).
![Text Line Parallel Rectangle Diagram]()
And this is how it would bolt in.
![Auto part Engine Automotive engine part Carburetor Vehicle]()
Disadvantage, the bypass and heater flow goes over the motor since the heater will be on the left hand side of the motor.
![Auto part Engine Vehicle Machine]()
4-way
The flow will only go over the motor when it's needed for heating. Otherwise it will just bypass the radiator and get fed directly from the catch tank.
![Line Text Parallel Diagram]()
And I can position the valve like this.
![Auto part Engine Vehicle Car Family car]()
Looking forward to hearing your thoughts.
3-way
pro = easier to control and less hoses
con = less ideal flow in non-radiator circumstances
4- way
pro = better flow when radiator not in use
con = more difficult to control and more crowded in terms of hoses
3-Way
Pump gets fed either via radiator or heater (might be on or not).
And this is how it would bolt in.
Disadvantage, the bypass and heater flow goes over the motor since the heater will be on the left hand side of the motor.
4-way
The flow will only go over the motor when it's needed for heating. Otherwise it will just bypass the radiator and get fed directly from the catch tank.
And I can position the valve like this.
Looking forward to hearing your thoughts.
1 - 14 of 14 Posts
