... or disconnect the cooling fan relay and jumper pins 3 to 4. The fans should spin immediately with keys in your pocket. This bypasses the fan relay control circuit and verifies fan operation. No practical way to test the relay without a scanner so all you can do is verify it's getting power (pin 4 grey wire) and the ground (pin 1 black wire) then check continuity of the control wire from the PCM. That's pin 2 light green wire at the relay to pin 73 connector c2 at the PCM. Disconnect the negative battery cable before disconnecting the PCM to prevent PCM damage.
FYI - The A/C blower fan has nothing to do with the radiator cooling fans.
Last edited by Raptor 07; 08-26-2012 at 04:55 PM.