Innova 31403, Owner'S Manual, Page: 95 / 142

GM OBD1 Systems
CODE RETRIEVAL PROCEDURE
OBD1 93
„ If the Scan Tool fails to link to the
vehicle's computer, a "Vehicle is not
responding" message shows on the
Scan Tool’s LCD display. Do the
following:
- Verify the ignition is ON.
- Check the cable connections at the
Scan Tool and at the vehicle’s DLC.
- Turn the ignition OFF, wait 10-12 seconds, then turn back ON
to reset the computer.
- Press the ENTER button and repeat steps 4 and 5 as
necessary.
„ If the Scan Tool cannot link to the
vehicle’s computer, the message
“Contact Technical Support” displays.
- Press the
button to return to
the Ford OBD1 menu.
- Turn the ignition OFF, and dis-
connect the Scan Tool.
- Contact Technical Support for
assistance.
6. If the Scan Tool was able to link to the
vehicle successfully, a "Code retrieval was
successful..." message shows temporarily
on the Scan Tool’s LCD display, followed
by any retrieved DTCs.
„ The Scan Tool will display a code only
if codes are present in the vehicle's
computer memory. If no codes are
present, a "No DTC's are presently
stored in the vehicle's computer" is
displayed.
7. If more than one code was retrieved, press the button, as
necessary, to display additional codes one at a time.
In the case of long code definitions, a small arrow is shown in the
upper/lower right-hand corner of the code display area to indicate
the presence of additional information. Use the
and
buttons, as necessary, to view the additional information.
Code 12 will always be present and it has one of the following meanings:
„ If code 12 is the only DTC retrieved and your vehicle "STARTS OK"
then code 12 indicates system "PASS" and all computer control
systems are functioning properly.
„ If code 12 is present and your vehicle "DOES NOT START", then it
may indicate a problem with the ignition control system.