Scan Tool Operating Instructions - AK Automotive Training

Manufacturer Applications
Live Data
Live data is read from the ECU and displayed. Pressing the 'tick' button will print a
snapshot of live data on the printer. Some of the parameters displayed may not be
suitable to some systems. e.g. the park/neutral switch.
Cont. Codes - Continuous Codes
This displays the DTCs (fault codes) stored during a normal drive cycle.
Clear Codes
Clears the DTCs displayed in the Continuous Code test above. Some faults may only
be stored in the memory under driving conditions and will not be stored after the 'Clear
Continuous Codes' function. Performing the KO EO and KO ER tests will clear the
memory hence 'Continuous Codes' should be read before either KO EO or KO ER is
run.
KO EO Test - Key On/Engine Off Self Test
This self-test operates as in the case of EEC V.
KO ER Test - Key On/Engine Running Self Test
This test is similar to the KO EO test but with the engine running. Ensure the engine
is at the correct operating temperature and follow the instructions on the display
otherwise incorrect DTCs will be reported.
After the engine has been started allow the check lights to clear and normal idle to be
established.
'Performing Test' will be displayed as the controller runs the test. Engine speed will
rise to mark the start of the test. The operator should then promptly:
1. Turn the steering wheel full lock from left to right.
• Code 521 is displayed if the action is not preformed.
2. Press and release brake pedal to operate the brake switch.
• Code 536 is displayed if the action is not preformed.
3. Toggle O/D switch if fitted.
• Code 653 is displayed if the action is not preformed.
4. When the engine returns to idle wait 10 - 15 seconds then blip the throttle to
exceed 4000 rpm.
• Code 538 is displayed if the action is not preformed.
• Code 411 or 412 is displayed if the action is preformed at the wrong part of
the test.
If there is a fault present at the start then Code 998 is displayed along with the normal
fault code and the self-test will not be performed.
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