Heater Fan Does Not Turn On

[JL1RX7]

Originally Posted by vex

I'm wondering if the relay has crapped itself. Although I hear it cycle on I get nothing more than voltage--no current. If I bridge the AC-connection I get the fan able to come on full tilt (granted it negates the variable resistor of the logicon, but it at least lets me drive the car now).

Unfortunately the FSM doesn't relate any information concerning the wires that run to the 5-wire relay in question. I know there's enough current to energize the coil. The wire leading to the battery has voltage and some amount of current--but when I bridge that wire and the wire that runs to the motor I get no movement.

Check continuity of your wires. See what happens there.

[vex]

Originally Posted by JL1RX7

Check continuity of your wires. See what happens there.

Tried that. I have continuity to ground on B. I have continuity to Fan plug (if I remember correctly) R/Y. Since I have voltage with Key off on L to relay I think it safe to assume that it has continuity. I'll need to isolate and test the variable resistor from the logicon to ensure that it is grounding properly (I believe it is... but I don't remember 100%). If I'm imagining the circuit correctly I should be getting a variable resistance to ground via the logicon switch to alter the current throughput going to the motor.