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Generic Functions
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Functional test controls allow you to activate/deactivate or change the test signal.
The controls will vary depending on the test, a few examples are shown in the
following table.
5.7.1 Functional Resets and Procedures
Functional Resets allow you to manually reset certain control module values (e.g.
reset fuel trim values, or turn off the oil change indicator) directly from the diagnostic
tool (if supported by the vehicle).
Functional Resets Procedures are step-by-step instructions to guide you though an
on-vehicle reset procedure. These instructions maybe provided in certain
applications (if available) when on-tool functional resets are not supported.
Functional resets are not available for all vehicles, and will vary depending on
vehicle support. A screen message may display “Functional Reset is not available
for this vehicle”.
5.8 Generic Functions
Selecting
Generic Functions
from the Vehicle Systems Test/Function menu opens
a submenu of available OBD-II/EOBD tests and functions for 1996 and newer
vehicles.
For additional information on generic OBD-II functions refer to the
Global OBD
Vehicle Communications Software Manual
.
Typical OBD-II/EOBD tests and functions include:
•
MIL Status
- displays the ID and status of the Malfunction Indicator Lamp (MIL)
•
Troubleshooter
- displays vehicle specific experience-based tests and tips
•
Readiness Monitors
—displays the status of the OBD-II/EOBD required
monitors
•
($01) Display Current Data
- displays a screen containing Generic OBD PID
data
•
($02) Freeze Frame
—displays data stored in ECM memory when a DTC is set
•
($05) Oxygen Sensor Monitoring
—displays on-board oxygen sensor
monitoring test results
•
($06) On-Board Monitored Systems
—displays the status of system monitors
•
($08) Request Control of On-Board System
—establishes bidirectional ECM
communication
•
($09) Calibration Identification
—displays the ECM calibration identification
numbers
•
($09) Calibration Verification Number
—displays the ECM calibration
•
($09) In-Use Performance Tracking
—displays a monitoring conditions report
•
($09) Vehicle Identification Number
—displays the VIN
•
($0A) Emissions Related Fault with Permanent Status
—displays a record of
permanent codes
Icon
Description
Test
Activates the test.
Change List
Allows you to switch data lists.
Custom
Allows you to select which parameters display during the
functional test.
Minus
Switches an item to low or off, or incrementally reduces a
variable signal.
Plus
Switches an item to high or on, or incrementally increases a
variable signal.
