Hummer H1 Service Manual page 1071

6 PCM/Tech 1 Scan Tool
Typical Engine Data Values
Idle/Upper Radiator Hose Hot/Closed Throttle/Park or Neutral/ACC. "OFF"
Tech 1 Parameter
Engine Speed
Desired Idle
ECT
Start Up ECT
IAT
ECT Sensor
Baro
ESO Solenoid
Boost Solenoid
Boost Pressure
Fuel Temp
Fuel Rate
Glow Plug
Glow Plug System
Des. Inj Timing
Act. Inj. Timing
APP Angle
APP 1
APP 2
APP 3
Inj. Pump Sol. Closure Time
TDC Offset
Ignition Volts
MPH kp/h
Cruise Switch
Cruise Active
Cruise Brake Sw.
Brake Switch
Set Switch
4-01-00
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Units Displayed
RPM
RPM
C°/F°
C°/F°
C°/F°
volts
kPa/Volts
on/off
%
kPa
C°/F°
millimeters cubed
volts
disabled/enabled
Degrees
Degrees
%
volts
volts
volts
milliseconds
Degrees
volts
MPH kp/h
on/off
on/off
open/closed
open/closed
on/off
Typical Data Value
±100 RPM from desired
PCM idle command
85°C - 105°C
(185°F - 221°F)
*varies with coolant temp.
varies (depends on start up ECT)
60°C - 80°C
(140°F - 177°F)
*varies with incoming air
1.7-2.2 volts (varies with coolant temp.)
3-5 volts (varies with altitude and baro
pressure)
on
60 - 70%
60 - 103 kPa
*varies with altitude
60°C - 80°C
(140°F - 176°F)
*varies with fuel temp.
7 - 12 mm3
0 volts
disabled
3.5 - 6.0°
3.5 - 6.0°
0%
.45 - .95 volts
4.0 - 4.5 volts
3.6 - 4.0 volts
1.70 - 1.90 ms
-.25 to -.75
12 - 14 volts
0 0
off
off
closed
open
off
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