Page 1365 - Foton Workshop Manual - Aumark (BJ1099)

SUPPLEMENTAL RESTRAINT SYSTEM - SUPPLEMENTAL RESTRAINT SYSTEM 42-1
SUPPLEMENTAL RESTRAINT SYSTEM

NOTICES

DANGER:
• Some vehicles are equipped with Supplemental Restraint System (SRS), i.e., driver
airbag. Failure to carry out service operations in the correct sequence may cause
the SRS to unexpectedly deploy during servicing, or even lead to critical accident.
Furthermore, an operational mistake may also prevent the SRS from normal operations.
Before servicing (including removal, installation,inspection or replacement of any part),
be sure to read through the following items carefully and perform the correct procedures
described in the service manual.
• Operation can only be started 90 seconds after the ignition switch is turned to the "LOCK"
position and the negative (-) cable and the positive (+) cable are disconnected from the
battery.(The SRS is equipped with backup power supply. Therefore, if any operation is
taken within 90 seconds after disconnecting the battery negative (-) cable and positive (+)
cable, the SRS may deploy suddenly.)
• Do not expose the horn button assembly to heat or flame.
WARNING:
• Since it is difficult to identify the failure of the SRS, Diagnostic Trouble Code (DTC) is an
essential source of information during troubleshooting. Thus, when troubleshooting the
SRS, always remember to check the DTCs before disconnecting the battery.
Even after a minor impact that the SRS does not deploy, it is always important to check
the horn button assembly and airbag ECU. (Refer to "Chapter 42 Supplemental Restraint 42
System - Horn Button Assembly, Replacement", "Chapter 42 Supplemental Restraint
System - Airbag Ecu, Replacement")
• Before repairing, remove the airbag ECU first if the service may result in any impact onto
it. (Refer to "Chapter 42 Supplemental Restraint System - Airbag Ecu, Replacement")
• Never use any SRS part from another vehicle. If replacement is required, be sure to use
new spare parts. Do not disassemble the horn button assembly.
• If the horn button assembly has been dropped, or there are cracks, dents or other faults
on the housing, replace it with a new one.
•Use a multimeter with high resistence to troubleshoot the SRS electrical circuits.
• During servicing, be sure to follow the instructions on the labels attached to the SRS
components.
• After repairing the SRS, remember to check the airbag indicator lamp.
• When the negative (-) cable is disconnected from the battery, the memory of the clock and
the radio system will be reset. So before repairing, back up the data if necessary. After
repairing, reset the radio system and the clock. Never use any backup power supply from
another vehicle, which may reset the memory of the systems. The backup power supply
will power up the SRS, which may unexpectedly deploy the airbag during servicing.

Page 1365