Can I Check P3 90195 Brake Controller With a Voltmeter at the 7-Way
Question:
I have a Tekonsha P3 brake controller. Is there a way to check the brakes with a voltage meter or must the vehicle/trailer be moving slowing down? I assume volts/amps would be increased when brakes are applied, when moving. I can see some voltage at the 7 pin plug when the auto is not moving but this does not prove much.
asked by: Gene D
Expert Reply:
Yes, you can sue a circuit tester to check the function of the brake controller at the 7-Way. You will see some voltage at the 7-Way on the brake controller pin when the controller is on. It sends a small amount of current, not even enough to engage the brakes, all the time. This current is used by the brake controller to detect whether or not a trailer is connected.
When you shut your truck off, after a period of inactivity, the brake controller will shut off and no longer send this test current.
Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 4 Axles
- LCD Display
- Up to 360 Degrees
- Tekonsha
more information >
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