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Conditions for Checking
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Nominal Value
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Affected terminals: -
Possible trouble codes: -
Ignition ON
Press key F7 in the system main
menu, select the desired test using the arrow keys and confirm with YES.
Follow the instructions in the TECH 1 display.
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When asked about the airbag
system installed in the vehicle, make the appropriate selection with the utmost
care. Select using the arrow keys. Confirm with ENTER key.
When an airbag system with a
single squib circuit is installed (driver's airbag only), then select DRIVER ONLY.
If an airbag system with two
squib circuits (driver's and co-driver's airbags) is installed in the
vehicle, then select CO-DRIVER.
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SELECT
ECU
(SQUIB CODE)
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If an incorrect selection is
made at this point, the control unit may not be able to be programmed.
After selection of the airbag
system, programming of the control unit begins, lasting approx. 35 seconds.
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If the display on the right
appears after programming, programming was successful.
After completing programming,
switch the ignition off and on again once.
To be on the safe side, read out
trouble codes again. Trouble code 51 must not be stored.
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PROGRAMMING
ECU
(SQUIB CODE)
OKAY
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If the display on the right
appears after programming, a fault has occurred during programming.
The following measures should
performed consecutively:
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ECU
(SQUIB CODE)
NOT
PROGRAMMED!
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Reprogram;
perform TECH 1 self-test;
check TECH 1 cable for
damaged insulation and shielding;
reprogram with a new airbag
control unit;
If the display on the right appears
after programming, a fault has occurred during programming. If the YES key is
pressed, TECH 1 displays all trouble codes stored in the control unit.
The following lists the possible fault sources:
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PROGRAMMING
ECU
(SQUIB CODE)
FAULT
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Trouble codes 51, 53 and 34:
The system selected was DRIVER ONLY although the vehicle is
equipped with a system with two squib circuits (driver and co-driver airbag)
- reprogram;
or
The selection (DRIVER ONLY, one squib circuit
installed in vehicle) was correct. The control unit has however registered a
resistance lower than 5 W
between Ter. 5 and 6 - eliminate fault as specified in trouble code
table (trouble code 34) and then reprogram;
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Trouble codes 51, 53 and 33:
The system selected was CO-DRIVER although the vehicle is
equipped with a system with only one
squib circuit (driver airbag
only) - reprogram;
or
The selection (CO-DRIVER, two squib circuits
installed in vehicle) was correct. The control unit has however registered a
resistance higher than 8 W
between Ter. 5 and 6 - eliminate fault as specified in trouble code
table (trouble code 33) and then reprogram;
Trouble codes 51, 53 and
other trouble codes except 33 and 34:
There is a fault in the system
which prevents programming. Eliminate fault according to trouble code table
or data list and then repeat programming.
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