Vansco VMM replacement instructions.
Programming the Vansco VMM’s
Extend the slide out to get to the nuts on the bolts that hold the VMM to the firewall.
Read all of the instructions first before starting.
1 - Turn ignition key to ON position & leave ON.
2 - Turn OFF chassis disconnect in battery compartment.
3 - Unplug FRONT VMM.
4 - Do Not unbolt the front VMM.
5 - Plug-in new front VMM – just let it hang there.
6 - Turn ON chassis disconnect, leave on for five minutes (This Will Load Software)
7 - Turn OFF Chassis Disconnect For Two Minutes, But Not More Than Three Minutes. ****THIS STEP 7 IS VERY IMPORTANT ****
8 - Turn ON chassis disconnect again, leave ON for five minutes. (This will load ladder logic).
9 - Check and see if this procedure worked by starting the engine ---- if OK continue.
Do not install the next VMM until the FRONT one works. If it does not work repeat above procedure for the FRONT VMM until it works. If something does not work try programming again.
10 - Turn OFF chassis disconnect, repeat steps 3 thru 8 for the next VMM.
11 - Make sure engine starts. Check all chassis functions. HWH, Slideouts & Jacks, Heater Blower, Headlights, Windshield Fans, Turn Signals, Brake Lights, etc. All these items and more are controlled by the Vansco VMM’s
12 - Unbolt old VMM’s and bolt in the new ones.
Remember: Both VMM’s have the same program & ladder logic. Therefore they can be switched back and forth. If the problem follows the VMM – then it is at fault. If the problem stays in the front or back – then the problem is in the wiring or chassis grounds or other chassis items.