Additional Tests
SYSTEM/ACTUATOR TESTS
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The screen refreshes to show the
Result
.
4.
Repeat step 3 as desired.
5.
Choose
Exit
to return to the Active Test menu.
Injector Disable
The Injector Disable functions let you disable a selected fuel injector.
1.
Select
Injector 1 Disable
,
Injector 2 Disable
,
Injector 3 Disable
or
Injector 1 Disable
in the Active Test menu, as desired, then press
ENTER
.
An “informational’ screen displays.
2.
Press
ENTER
to continue.
The Injector Disable screen displays.
3.
Select
Disabled
, then press
ENTER
.
The screen refreshes to show the
Result
.
4.
Choose
Exit
to return to the Active Test
menu.
GM System & Actuator Tests
Depending on the vehicle under test, the ECM Special Functions menu
provides access to one or more of the following tests:
Engine Speed Control
Throttle Position
Throttle Sweep
Reset Idle Learn
EGR Solenoid
Fuel Injector Balance
Cylinder Power Balance
Misfire Graphic
Engine Oil Life Reset
Crankshaft Position Variation Learn
HO2S Learn Sensor
If an error occurs while performing any function, an “advisory”
message displays. Choose
Exit
to return to the ECM Special
Functions menu.
Engine Speed Control
The Engine Speed Control function lets you increase or decrease
engine speed from a base commanded RPM in 25 RPM increments.