lowest with the throttle closed and highest at wide open throttle.
Transmission Tmp (°F)
Range: -40° to 304°
Some vehicles are equipped with sensors that monitor the transmission
temperature. The ECM will monitor the temperature for overheating.
Turbo Boost (kPa)
Range: 0 to 200 kPa
Actual boost pressure added to barometric pressure to maintain a desired
manifold absolute pressure.
Vacuum Sensor (Volts)
Range: 0 to 5 Volts
Manifold vacuum. Displayed in volts. The reading should be low when
vacuum is low (and the Manifold Absolute Pressure is high).
VCC Status (Solenoid On / Solenoid Off)
Some Cadillacs after 1985 have Viscous Converter Clutches, this item
should show the ECM command to the output solenoid. This is similar to
the torque converter solenoid, but does not represent the lock up status of
the converter.
Vehicle Speed (MPH)
A signal from the vehicle speed sensor to the ECM that translates
electronic pulses into miles per hour.
Wastegate Bypass (On / Off)
A reading to confirm that the ECM is commanding the wastegate to boost
pressure in some turbocharged engines. Pressure is boosted by turning a
vacuum solenoid ON or OFF to open or close the wastegate.
Wastegate Duty (% On)
Range: 0 to 100% (0 to 60° of dwell)
The percentage of time (or degrees of dwell) that a vacuum solenoid
receives the ON command from the ECM to control the amount of boost
in turbocharged engines. The wastegate allows exhaust gases to either
flow through or bypass the turbocharger.
Water Injector (On / Off)
Used on some turbocharged vehicles to inhibit detonation.
Wide Open Throt (Yes / No)
When the TPS reaches a high enough threshold or a wide open throttle
switch has been activated by the throttle kicker in carbureted vehicles,
this parameter should indicate YES. For any other throttle position this
parameter should indicate NO.
Page 75
GM O
PERATIONAL
D
ATA
I
TEMS
Summary of Contents for EX-SCAN 5000
Page 1: ...USERS MANUAL...
Page 95: ...NOTES Page 95...
Page 96: ...NOTES Page 96...
Page 97: ...NOTES Page 97...