Testing Blower Motor Amperage and Voltage
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@mattcasdorph If you can get at the metal housing of the motor you can check ground there or at the motor electrical connector.
richpin06a 1 month ago
@richpin06a I know the motors good, how would I check the ground?
mattcasdorph 1 month ago
@mattcasdorph You said you had voltage at the connector so if the connection is good it is a ground or motor problem.
richpin06a 1 month ago
@richpin06a I tried a homemade jumper to make sure the connection was good from the connector to the fan prongs, never got it to come on, I also bought a ac/blower switch and replaced that, and today bought a new relay (the old one had a prong that looked like it got hot before so I figured it may have went bad) and it still does not blow. Whats the switch in the center called? The one that controls gates and defrost ect...
mattcasdorph 1 month ago
@richpin06a thanks for the help, I'll check it out again in the morning and update you
mattcasdorph 1 month ago
@mattcasdorph If the ground is good at the connector that would leave just the connection between the connector and motor as a possible problem.
richpin06a 1 month ago
@richpin06a Ok, I tried the meter set to 20 DCV and it read 12.15V, I switched it back to 10A and changed the red probe end to the Amperage gauge and it still shows no amperage, but apparently it does have voltage! I know the blower is good, could it be a bad connection between the connector and the prongs on the blower motor?
mattcasdorph 1 month ago
@mattcasdorph As long as the motor is ok no amperage reading should mean no voltage at the connector.
richpin06a 1 month ago
@richpin06a Would it matter that it was on 10A setting? I know that's amperage, but if there was no amperage reading, wouldn't that tell me there is no voltage anyway? I didn't get to test it on the 20 DCV
mattcasdorph 1 month ago
@mattcasdorph To check that connector your meter needs to be on the V DC 20 scale and the lead from the meter needs to be in the V plug.
richpin06a 1 month ago