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Page 39/55 UltraGauge™ EM User Manual www.ultra-gauge.com
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MENU
Vehicle Setup ..
Force Protocol
Prevents UltraGauge from searching for the protocol used by the Vehicles Electronic Control Module (ECM). Normally
UltraGauge tries each of the five interfaces and protocols until it discovers the protocol used by the ECM. Each vehicle should
only support a single protocol. After the initial Scan, UltraGauge will not Scan the interface for the protocol again unless
UltraGauge is unplugged.
WARNING
!
!
!
!
The Scanning process can interfere with proprietary implementations of the OBD II connector/interface. For example, on some
vehicles the traction control light becomes lit, or the speedometer or other gauges may stop functioning, the transmission may
shift hard or not at all, or the check engine light may become lit. To avoid these issues, the Protocol can be fixed to that used by
the vehicle.
Force Protocol
Description
Auto Discovery
Scans the interface for the protocol. This is the default setting
Force J1850-VPM
Early GM vehicles and some Chrysler vehicles
Force 9141
Most early foreign vehicles and most early Chrysler vehicles
Force Ford
Exclusively used on early ford vehicles.
Force KWP2000
This rare protocol is used on various vehicles.
Force CAN
Used on all 2008 and newer vehicles as well as on many 2004 and newer vehicles.
Force Current
Forces the Protocol currently in use, found during the scanning process. Use this if
you can’t remember the protocol found.
UltraGauge Automatically remembers the last found protocol and attempts to communicate with the vehicle’s ECM using that
protocol. As long as communication is established, UltraGauge will not attempt other protocols. If communication is not
established, then UltraGauge will cycle though each protocol until communication is established. Forcing the protocol will
prevent this and UltraGauge will repeatedly try only the forced protocol.
Once any of the above Forced Protocol menu items are selected, UltraGauge will restart and then communicate with the ECM
using only the forced protocol.
If your vehicle is experiencing issues, follow this procedure:
1.
Force the protocol: MENU
Vehicle Setup
Force Protocol
2.
Unplug UltraGauge
3.
Start the vehicle
4.
Insure the issue is not present, if present turn of the vehicle and repeat step 3.
5.
turn off the vehicle
6.
Place the ignition in the RUN position
7.
Re-attach UltraGauge. UltraGauge will then discover the available gauges.
8.
Once UtlraGauge has found the available gauges, start the vehicle and ensure the issue has been resolved
Once forced, UltraGauge will likely not function if moved to a difference vehicle. This can be resolved one of three ways:
1.
Prior to moving UltraGauge to a different vehicle select
MENU
Vehicle Setup ..
Force Protocol
Auto
Discovery
2.
If the protocol used on the second vehicle is known, use the Force Protocol menu to force the protocol to that of the
second vehicle.
3.
Once attached to the second vehicle and during the initial scanning screen, hold the
MENU
key until the Menu screen
appears. Select
MENU
Vehicle Setup ..
Force Protocol
Auto Discovery
