This F#*king horn!

Mazdabater · 01-16-2011, 03:11 AM

So got a long bit of wire and connected it to the GR wire that connects it to the horn and ran it back near the CPU so I could check continuity between it and the GR wire coming off the CPU plug and it has continuity. The GW wire measures 12v with a multi meter and when jumpered to the GR wire I get no horn. However when I jump the wire from the battery to the horn it works. The CPU also clicks. So it seems to me like nothing is wrong but I'm still getting no F'n Horn

Pete_89T2 · 01-16-2011, 08:11 AM

Sounds like the solder joints to the connectors on the CPU board are causing the open circuit. Just like the HVAC/logicon/clock & idiot light cluster on FCs, the solder joints like to crap out on these too. If you're handy with a soldering iron, pull out the CPU, open it up and re-do all the solder joints where the connectors join the circuit board. Pop it back in and see if it solves your problem.

01-16-2011, 03:11 AM	#1
Mazdabater FC3S Join Date: Jun 2010 Location: Townsville, QLD, AUS Posts: 326 Rep Power: 16	So got a long bit of wire and connected it to the GR wire that connects it to the horn and ran it back near the CPU so I could check continuity between it and the GR wire coming off the CPU plug and it has continuity. The GW wire measures 12v with a multi meter and when jumpered to the GR wire I get no horn. However when I jump the wire from the battery to the horn it works. The CPU also clicks. So it seems to me like nothing is wrong but I'm still getting no F'n Horn

01-16-2011, 08:11 AM	#2
Pete_89T2 Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD Posts: 874 Rep Power: 16	Sounds like the solder joints to the connectors on the CPU board are causing the open circuit. Just like the HVAC/logicon/clock & idiot light cluster on FCs, the solder joints like to crap out on these too. If you're handy with a soldering iron, pull out the CPU, open it up and re-do all the solder joints where the connectors join the circuit board. Pop it back in and see if it solves your problem.