First verify that the switch is energizing the relay in both positions by turning the low beams on and then pulling up the relay--does it click? If not, replace the switch. If yes, next check for power on the red wire as it comes out of the column. Switch on, no power--replace the switch. If power, check for power at the head-low fuse in the engine compartment fuse box. No power--find break in wire. If power, check for power on the yellow/red wire as it comes out of the fuse box. No power--repair fuse box. Power--check for power at lamps--same wire. No power--repair yellow/red wire.
Check the low beam relay . Look here for location http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on electrical distribution , then under subsystem click on relay . Click the search button then the blue link . Look at left side near the bottom ,HEAD LP LO . Right above #5 and #4 fuse's . Do you know how to test at relay base ,that's where it plugs into. Watch this video .
VEHICLE RELAYS Operation Diagnosis
You likely need a new flasher control module, it is located under the dash near the steering column.
It looks like a large relay with three blade connector.
Follow the wire harness from fan. If you dont find a relay it should be in the fusebox under the hood. When you take the cover off flip it over and there should be the location of each fuse/ relay and what it is for.
Remove all the belts on the pulley. Remove the center retaining bolt which typically needs to keep the engine from turning to get it off unless you use an impact wrench. Then you need a puller to push against the end of the crank shaft and pull the pulley off.
