Opel Frontera UBS. Manual - part 2118

6E–45

ENGINE DRIVEABILITY AND EMISSIONS

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Menu

D

The following table shows, which functions are used
the available equipment versions.

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DTC Modes

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On OBD passenger cars there are five options available
in Tech 2 DTC mode to display the enhanced information
available.  A description of the new modes, DTC Info
follows.  After selecting DTC, the following menu
appears:

D

DTC Info

D

Freeze Frame

D

Fail Records (not all applications)

D

Clear Info

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ENGINE DRIVEABILITY AND EMISSIONS

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The following is a brief description of each of the sub
menus in DTC Info and Specific DTC.  The order in which
they appear here is alphabetical and not necessarily the
way they will appear on the Tech 2.

DTC Information Mode

Use the DTC info mode to search for a specific type of
stored DTC information.  There are seven choices.  The
service manual may instruct the technician to test for
DTCs in a certain manner.  Always follow published
service procedures.
To get a complete description of any status, press the
“Enter” key before pressing the desired F-key.  For
example, pressing “Enter” then an F-key will display a
definition of the abbreviated Tech 2 status.

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DTC Status
This selection will display any DTCs that have not run
during the current ignition cycle or have reported a test
failure during this ignition up to a maximum of 33 DTCs.
DTC tests which run and pass will cause that DTC
number to be removed from Tech 2 screen.

Fail This Ignition
This selection will display all DTCs that have failed during
the present ignition cycle.

History
This selection will display only DTCs that are stored in the
PCM’s history memory.  It will not display Type B DTCs
that have not requested the MIL (“Check Engine” lamp).  It
will display all type A and B DTCs that have requested the
MIL and have failed within the last 40 warm-up cycles.  In
addition, it will display all type C and type D DTCs that
have failed within the last 40 warm-up cycles.

Last Test Failed
This selection will display only DTCs that have failed the
last time the test ran.  The last test may have run during a
previous ignition cycle if a type A or type B DTC is
displayed.  For type C and type D DTCs, the last failure
must have occurred during the current ignition cycle to
appear as Last Test Fail.

MILSVC or Message Requested
This selection will display only DTCs that are requesting
the MIL.  Type C and type D DTCs cannot be displayed
using this option.  This selection will report type B DTCs
only after the MIL has been requested.

Not Run Since Code Clear
This option will display up to 33 DTCs that have not run
since the DTCs were last cleared.  Since any displayed
DTCs have not run, their condition (passing or failing) is
unknown.

Test Failed Since Code Clear
This selection will display all active and history DTCs that
have reported a test failure since the last time DTCs were
cleared.  DTCs that last failed more than 40 warm-up
cycles before this option is selected will not be displayed.

Injector Balance Test

This test is conducted to make it sure that appropriate
electric signals are being sent to injectors Nos. 1–6.
Tech 2 must be used for this test.
Test Procedure:
1. Connect Tech 2 to the vehicle DLC.
2. Run the Engine at idle.

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ENGINE DRIVEABILITY AND EMISSIONS

3. Select F3: Miscellaneous Test in the Application

Menu.

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4. Select F7: Injector Balance Test in the Miscellaneous

Test.

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5. Select injector number and push “injector off” of soft

key.

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6. Make sure of engine speed change.
7. In the engine speed whose change has been

confirmed, the injector electric circuit can be regard
as normal.

As for the engine speed whose change has not been
confirmed, the injector electric circuit or the injector
proper is faulty.

EGR Control Test

This test is conducted check EGR valve for its working.
Tech 2 must be used for this test.
Test Procedure:
1. Connect Tech 2 to the vehicle DLC.
2. Run the Engine at idle.
3. Select F3: Miscellaneous Test in the Application

Menu.

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ENGINE DRIVEABILITY AND EMISSIONS

4. Select F5: EGR Control Test in the Miscellaneous

Test.

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5. Instruct EGR Valve to check a data list.

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6. If change in the data list shows a normal valve.

Idle Air Control System Test

This test is conducted check IAC system for its working.
Tech 2 must be used for this test.
Test Procedure:
1. Connect Tech 2 to the vehicle DLC.
2. Run the Engine at idle.

3. Select F3: Miscellaneous Test in the Application

Menu.

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4. Select F3: IAC System Test in the Miscellaneous

Test.

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