Carguy34

Hey Fellas,
I just installed an e-fan and I am having issues getting it to turn on. I have the PWM1 wire (Violet/White) running to a relay that controls the fan. I never see 12 volts through that wire. I have tried to turn the fan on using low numbers to see if it'll work (65C on, 60C off, for example when water temp is 67C) and it has never turned on. I have checked the PWM1 enabled box too. If there somewhere else that I need to specify that I want to use PWM1? When I was looking through the help file, it mentioned a test that could be run to check the wiring. How do I run that test?
I have tested the relay by applying 12 volts where the PWM wire plugs in and the fan turns on and runs great, so I know the problem is the PWM wire. Should I just try a different channel (PWM2 for example) to see if that works? That was my next step but I ran out of time to try it today. Any help will be appeciated.

Thanks

Derek10AE

I could be wrong but from looking at the E6X wiring diagram PWM 1-4 are going to be grounds. Your grey/red ignition wire is your 12v common.

Claudio RX-7

iTrader: (1)

This has been covered a lot.... read this post: https://www.rx7club.com/showthread.p...ht=PWM+outputs

PWMs are sink to ground, ie. the negative side of the equation, so they go to the negative side of the relay.

Carguy34

That makes sense, thanks for the replies. I will try to get out there after work tonight to see if I can get it wired correctly.

Thanks again,
-Brandon