User Manual

Using the Scan Tool
VIEWING OEM ENHANCED DTCs
3040e 43
General Motors/Isuzu Enhanced DTCs
When GM OEM Enhanced is chosen from
the System Menu, the Scan Tool retrieves
OEM enhanced DTCs from the vehicle’s
computer.
1. A “One moment please” message
displays while the Scan Tool retrieves
the selected DTCs.
 If the Scan Tool fails to link to the
vehicle’s computer, a “Communica-
tion Error” message shows on the
Scan Tool’s display.
- Ensure your vehicle is OBD2
compliant. See VEHICLES
COVERED on page 4 for vehicle
compliance verification information.
- Verify the connection at the DLC,
and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
- Press the LINK
button to continue.
 If the Scan Tool cannot link to the
vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the SYSTEM MENU
button to return to the System
Menu.
- Turn the ignition off, and dis-
connect the Scan Tool.
- Contact Technical Support for assistance.
2. To read the display:
Refer to DISPLAY FUNCTIONS on page 6 for a description of
LCD display elements.
 A visible icon indicates that the Scan Tool is being powered
through the vehicle’s DLC connector.
 A visible icon indicates that the
Scan Tool is linked to (communi-
cating with) the vehicle’s computer.
 The upper left corner of the display
shows the Diagnostic Trouble Code
(DTC), the number of the code
currently being displayed and the
total number of codes retrieved,
and the type of code.