Brake (BOO) (On/Off)
Vehicles with an automatic transmission have a brake switch input state.
When the brake is depressed, ON should be displayed, otherwise the display
will indicate OFF. The brake switch does not apply for manual transmissions.
EGR Feedback (Volts)
Range: 0 to 5 Volts
For vehicles that have a EGR valve position sensor, this will show voltage
of the sensor corresponding to pintle position which provides feedback to
the ECM to determine if the EGR is operating properly.
EGR Vacuum Regl (duty cycle %)
Range: 0 to 100%
A solenoid on the EGR valve is modulated to send regulated vacuum to
the EGR. Displayed as a duty cycle percentage. Zero percent represents
a closed EGR valve (no vacuum applied to EGR), 100% represents full
open EGR valve (manifold vacuum applied to EGR valve).
Engine Coolant Temp (°F)
Range: -40° to 392°
This displays the converted voltage from the Engine Coolant Temperature
sensor to degrees Fahrenheit.
Engine Speed (RPM)
Engine speed based on the crank position input.
High Speed Fan (On/Off)
The high speed fan is the primary fan for cooling transverse mounted
engines. The screen should indicate ON if the ECM is commanding the
high speed fan ON. If the ECM is commanding the fan OFF, the screen
should indicate OFF.
Idle Air Control (duty cycle %)
Range: 0 to 100%
The solenoid in the Idle Air Control valve is modulated to control the
amount of air entering the manifold at an idle condition. Zero percent
represents a closed valve (manifold not subject to atmosphere), 100%
represents a full open valve (manifold exposed to atmosphere).
Injector PW (mS)
Range: 0 to 20 mS
Amount of on-time base duration (pulse width) for an injector as
determined by the ECM. The longer the duration, the more fuel added.
Pulse width will be less for Sequential Electronic Fuel Injection (SEFI)
because there is an injector for every cylinder. Most Electronic Fuel
Injection, Center Point Injection (CPI) or High Swirl Combustion (HSC)
motors will have longer durations due to only having 1 or 2 fuel injectors.
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Содержание EX-SCAN 5000
Страница 1: ...USERS MANUAL...
Страница 95: ...NOTES Page 95...
Страница 96: ...NOTES Page 96...
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