User manual

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On-Board Diagnostics (OBD) Diagnostic Service Definitions
Test results for these components or systems are reported in the same format as the DTCs in
Service $03; refer to “Service $03: Emission-related DTCs” on page 18.
The intended use of this service is to assist the service technician after a vehicle repair and after
clearing diagnostic information, by reporting test results after a single driving cycle.
• If a test failed during the driving cycle, the DTC associated with that test will be reported. If the
pending fault does not occur again within 40 to 80 warm-up cycles, the fault is automatically
cleared from memory.
• Test results reported by this service do not necessarily indicate a faulty component or system.
If test results indicate a failure again after additional driving, then a DTC will set with Service
$03, indicating a faulty component or system. The MIL will be illuminated.
This service can always be used to request the results of the latest test, independent of the setting
of a DTC.
4.6.8 Service $08: On-board Activation Tests
This service controls the operation of vehicle components, tests or systems. These tests are also
known as “On-Board Activation Tests”.
4.6.9 Service $09: Vehicle Information
The purpose of this service is to enable the scan tool to request vehicle specific vehicle
information such as:
• Vehicle Identification Number (VIN)
• Calibration IDs
• Calibration Verification Numbers (CVN, displayed as hexadecimal value)
Some of this information may be required by regulations and some may be desirable to be
reported in a standard format, if supported by the vehicle manufacturer.
4.6.10 Service $09: In-use Performance Tracking
This data is used to support possible regulatory requirements for “In-use Performance Tracking”.
Manufacturers are required to implement software programs that track in-use performance for
each of the following components or systems:
• Catalyst Bank 1
• Catalyst Bank 2
• Primary Oxygen Sensor Bank 1
• Primary Oxygen Sensor Bank 2
• Evaporative Leak Detection System
• EGR System
• Secondary Air System