88C-65
MR-413-X44-88C000$847.mif
V3
88C
AIRBAGS AND PRETENSIONERS
Fault finding - Customer complaints
NOTESOnly refer to the customer complaints after performing a complete check using
the diagnostic tool.
ABSENCE OF DIALOGUE WITH THE AIR BAG COMPUTER ALP 1
MR-413-X44-88C000$847.mif
MRSZ AIRBAG
Vdiag: 04
88C-66
MR-413-X44-88C000$924.mif
V3
88C
AIRBAGS AND PRETENSIONERS
Fault finding - Fault Finding Chart
ALP 1 No communication with the airbag computer
NOTESSpecial note:
See "Introduction" for the + after ignition feed to perform fault finding on a
computer.
Use the W iring Diagrams Technical Note, New TWINGO.
Try to establish dialogue with a computer on another vehicle to make sure that the diagnostic tool is not faulty. If
the tool is not the cause and communication cannot be established with any other computer on the same vehicle,
it is possible that another computer is disrupting the multiplex network.
Proceed by successive disconnections to locate the defective computer. Check the battery voltage and perform
the necessary operations to reach the correct voltage.
(10.5 V < battery voltage < 16 V).
Check for the presence and condition of the supply fuse (F7 15A) of the airbag computer component code 756
on the passenger compartment fuse box component code 1016.
Check the connection of the airbag computer connector, component code 756 and the condition of its
connections.
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check that the airbag computer, component code 756, is correctly supplied:
–Check and ensure the presence of + after ignition feed between the terminals marked earth connection
code NAP and + after ignition feed connection code AP25.
If the + after ignition feed is absent:
Check the insulation against earth and the continuity of the following connection:
–Connection code AP25 between components 1016 and 756.
Check the continuity of the following connection:
–Connection code NAP between component 756 and the earth NAP.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRWhen communication is established, deal with any faults indicated.
ABGAB9_V04_ALP01
MR-413-X44-88C000$924.mif
MRSZ AIRBAG
Vdiag: 04
88C-67
MR-413-X44-88C000$924.mif
V3
AIRBAGS AND PRETENSIONERS
Fault finding - Fault Finding Chart
MRSZ AIRBAG
Vdiag: 04
88C
ALP 1
CONTINUED
Check that the power supply to the diagnostic socket is correct:
–+ before ignition feed on connection code BP19,
If the + before ignition feed is absent:
Check the insulation against earth and the continuity of the following connection:
–Connection code BP19 between components 225 and 1016.
–Earth on connections NAM and MAM.
If the earth is absent:
Check the continuity of the following connection(s):
–Connection code NAM between component 225 and earth NAM.
–Connection code MAM between component 225 and earth MAM.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If dialogue has still not been established after these checks, contact the Techline.
AFTER REPAIRWhen communication is established, deal with any faults indicated.
