AutoXray EX-SCAN 5000, User Manual

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• ENABLED: SC is enabled but not engaged.
• NORMAL: SC is engaged and Cruise mode is active.
• ACCEL: SC is engaged and Acceleration mode is active.
• DECEL: SC is engaged and Deceleration mode is active
Coolant Temp (° F) Range: -40° to 260°
The temperature of the vehicle coolant is used to determine when to
transition into closed loop and to calculate spark advance during cold
starts. The PCM converts the voltage from the sensor to a temperature.
Coolant Temp (Volts) Range: 0 to 5 Volts
The PCM converts the voltage read from the coolant temperature sensor
to a temperature (see Coolant Temp degrees F).
Engine Speed (RPM)
Engine speed based on the distributor reference pulses.
F1 - F3 Start Count (Counts) Range: 0 to 255 Counts
The number of key on cycles since the latest fault (F1), the second latest
fault (F2), and the third latest fault (F3) were set or since all of the codes
have been erased.
Injector Pulse #x (mS) Range: 0 to 20 mS
Amount of on-time base duration (pulse width) for an injector as
determined by the PCM. The longer the duration, the more fuel being
added. Pulse width will be less for Multi-port Fuel Injection (MFI) because
there is an injector for every cylinder. Most Electronic Fuel Injection (EFI)
and Throttle Body Injection (TBI) motors will have a longer duration due to
there only being one or two fuel injectors.
Knock Sensor #x (Volts) Range: 0 to 5 Volts
The knock sensor is located in the intake manifold and will generate a
signal to the PCM if knock is detected. This input is used by the PCM to
retard the timing to eliminate the knock condition. The knock circuit is
disabled at low RPM or in high manifold vacuum conditions. (x) refers to
the bank of cylinders that the detonation sensor represents.
MAP Sensor (Volts / in-Hg) Range: 0 to 5 Volts, or 0 to 60 in-Hg
This sensor is used to monitor atmospheric (key on / engine running) and
manifold absolute pressures in order to calculate manifold vacuum (engine
load). This sensor along with others are used to modify the air/fuel mixture
and spark advance. Higher voltages indicate higher engine load, where
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