Idle Mixture Adjustment - Daewoo G420E Service Manual

Idle Mixture Adjustment

Figure G7
The method for making the idle mixture adjustment to
a running engine is to use the Service Tool software
by connecting a laptop computer to the SECM. If you
do not have the Service Tool proceed to (step 12). A
USB (Universal Serial Bus) to CAN (Controller Area
Network) communication adapter by Kavaser will be
required along with a Crypt Token (Figure G7). The
Crypt Token acts as a security key allowing the laptop
to retrieve the necessary data from the SECM.
Figure G8
1. Install the Crypt Token in an available USB port in
the computer (Figure G8).
2. With the ignition key in the OFF position, connect
the Kavaser communication cable from a second
USB port on the computer to the CAN
communications cable on the engine. (*If your
laptop computer does not have a second USB
port an appropriate USB Hub will need to be
used).
3. Connect a timing light to the engine.
4. Turn the ignition key to the ON position (Do Not
Start the Engine).
Tier
G420E/G424E
Crypt
Token
LP Engine
Figure G9
5. Launch the MotoView program on your computer
and open the Service Tool display.
6. Start the engine; you should now see the idle
RPM on your Service Tool display Run Screen
(Figure G9).
NOTE
Service Tool software (MotoTuneViewer)
and the security Crypt Token is
obtainable by certified technicians
through authorized dealers.
85 Test And Adjustments