Quote:
Originally Posted by peashooter
ok, both vehicles have 12v red to black, 5-11v red to yellow. Is there a check for the regulator? Thanks.
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I had a typo on that last voltage test..the second part of the test is yl to blk , not R to Yl..
Anyway, if that test OK, then you have to get to the motor/reg and ground the Blu wire that goes from the motor to the reg....that will give you high fan, verifying fan motor. If yes, then reg is bad.
The yellow wire is the trigger voltage to turn on the reg, which is why I have you verify voltage at yl wire before going down to the motor.
When you ground the blu wire , it is the same as direct 12 v to the motor b/c you have 12V + at the red and the blu is the ground side of the motor circuit. The regulator simply controls the ground side of the circuit [ a switched ground]