condition. The purpose of completing an OBD II drive cycle is to force the vehicle to run
its onboard diagnostics. Some form of a drive cycle needs to be performed after DTCs
have been erased from the PCM’s memory or after the battery has been disconnected.
Running through a vehicle’s complete drive cycle will “set” the readiness monitors so
that future faults can be detected. Drive cycles vary depending on the vehicle and the
monitor that needs to be reset. For vehicle specic drive cycle, consult the vehicle’s
Owner’s Manual.
Freeze Frame Data
-- When an emissions related fault occurs, the OBD II system not
only sets a code but also records a snapshot of the vehicle operating parameters to help
in identifying the problem. This set of values is referred to as Freeze Frame Data and may
include important engine parameters such as engine RPM, vehicle speed, air ow,
engine load, fuel pressure, fuel trim value, engine coolant temperature, ignition timing
advance, or closed loop status.
3. Product Information
3.1 Tool Description
1. LCD DISPLAY--Indicates test results.
2. ENTER/EXIT BUTTON--Conrms a selection (or action) from a menu list, or returns to
the main menu.
3. SCROLL BUTTON-- Scrolls through menu items. It is also usedto enter system setup
menu when pressed.
4. OBD II CONNECTOR--Connects the scan tool to the vehicle’s Data Link Connector
(DLC).
- 5 -
1
2
3
4
Scroll
»
Enter
/
Exit