User Manual

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1 General Information
On-Board Diagnostics (OBD) II
The first generation of On-Board Diagnostics (called OBD I) was developed
by the California Air Resources Board (ARB) and implemented in 1988 to
monitor some of the emission control components on vehicles. As
technology evolved and the desire to improve the On-Board Diagnostic
system increased, a new generation of On-Board Diagnostic system was
developed. This second generation of On-Board Diagnostic regulations is
called “OBD II”.
The OBD II system is designed to monitor emission control systems and key
engine components by performing either continuous or periodic tests of
specific components and vehicle conditions. When a problem is detected,
the OBD II system turns on a warning lamp (MIL) on the vehicle instrument
panel to alert the driver typically by the phrase of “Check Engine” or “Service
Engine Soon”. The system will also store important information about the
detected malfunction so that a technician can accurately find and fix the
problem. Here below follow three pieces of such valuable information:
1. Whether the Malfunction Indicator Light (MIL) is commanded ‘on’ or ‘off’;
2. Which, if any, Diagnostic Trouble Codes (DTCs) are stored;
3. Readiness Monitor status.
Oil Reset
The Engine Oil Life System calculates when to change the engine oil and
filter based on vehicle use. An oil change is required whenever indicated by
the display and according to the recommended maintenance schedule.
Whenever the oil is changed, reset the system so it can calculate when the
next oil change is required. If a situation occurs where the oil is changed
prior to a service indicator being turned on, the system also needs to be
reset.