InterMotive Inc.
12840 Earhart Avenue
Auburn, CA 95602
Phone: (530) 823-1048
Fax: (530) 823-1516
Page 1 of 6
www.intermotive.net
AFIS420VSX-B-021318-INS
Introduction
The AFIS420VSX-B is a Fast Idle system that elevates engine idle RPM based on a number of “triggers”.
The vehicle must be in Park for Fast Idle to engage. There are three different engine RPM settings which
can be selected by grounding different control inputs. The three different RPM values can be independently
set during installation.
An ISO 9001:2008 Registered Company
Options
AFIS420VSX-B — Single OBDII connector Data Link Harness
AFIS420VSX-BP — Two connector “T” Data Link harness
AFIS420VSX-BIP — Two connector white panel mount “T” Data Link harness
AFIS420-VSX-BW — Input 1 default speed is: 1500—RPM Gas/1500—RPM Diesel
Installation Instructions
Disconnect vehicle battery before proceeding with installation.
AFIS420VSX-B Module
Remove the lower dash panel below the steering column area and find a suitable location to mount the
AFIS420VSX-B module. Locate the module in an area away from any external heat sources (engine heat,
heater ducts, etc.). Do not actually mount the module until all wire harnesses are routed and secure. The
last step will be to mount the module.
IMPORTANT—READ BEFORE INSTALLATION
It is the installer’s responsibility to route and secure all wiring harnesses where they cannot be damaged
by sharp objects, mechanical moving parts and high heat sources. Failure to do so could result in damage
to the system or vehicle and create possible safety concerns for the operator and passengers.
Avoid placing the module where it could encounter strong magnetic fields from high current cabling
connected to motors, solenoids, etc. Avoid radio frequency energy from antennas or inverters next to
the module. Avoid high voltage spikes in vehicle wiring by always using diode clamped relays when
installing upfitter circuits.
AFIS420VSX-B Fast Idle System
2009-2018 Ford E-Series, all engines
2009-2010 Ford F-250 - F-550, all engines
2014-2018 Ford F53/F59, 6.8L engine
2014-2016 Ford Transit Connect
2009-2017 Chevrolet Express / GMC Savana
2015-2017 Chevrolet Silverado / Sierra
2011-2014 American General MV-1 4.6L
2016-2017 Isuzu NPR
