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Conditions for Checking
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Nominal Value
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Affected Terminals: 21
Possible Trouble Codes: -
Only vehicles with ATWS:
Ignition OFF
Electronic immobilizer must be switched off (if necessary,
switch off using centre button of infrared key transmitter; only vehicles
with infrared remote control)
All doors closed
Turn key in driver's door 30° to the left (vehicle with
LHD) I right (vehicle with RHD) (central door locking system unlocked and
anti - theft warning system switched off)
Press F5 in the system main menu, select desired test
with the arrow keys and confirm with YES. Follow the instructions in the
TECH 1 display.
After YES key is actuated again,
the central door locking system can signal "arm" or
"disarm" to the ATWS:
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arrow key Up -
> "arm" signal
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ARM 0V
ATWS armed after 10 s
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Arrow key
DOWN - > "disarm" signal
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DISARM 5V
ATWS disarmed
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The check is completed after a maximum of 30 s.
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Possible test procedure:
Guide TECH 1 cable through joint of driver's door (left
ajar) and operate TECH 1 from outside the vehicle.
However, ensure that the driver's door contact switch is correctly
actuated (see section 6.3.2 test step 09)
Ignition OFF
Select actuator test as described above
On TECH 1, press arrow key Up and wait approx. 10 s
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(LED of electronic immobilizer flashes regularly for
approx. 10 s, while anti - theft warning system is being armed; once the anti
- theft warning system is armed, the LED flashes irregularly)
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ARM 0V
ATWS armed after 10 s
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Open driver's door, left ajar
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Contact switch in driver's door is actuated and ATWS
triggers alarm
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Press arrow key DOWN on TECH 1
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DISARM 5V
ATWS disarmed
ATWS finishes alarm
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After this actuator test is finished, delete the
corresponding alarm codes in the ATWS control unit using TECH 1
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