RESTRAINT CONTROL SYSTEM
9J1–5
System Schematic
D09RX002
SRS Diagnostic System Check
The diagnostic procedures used in this section are
designed to find and repair Supplemental Restraint
System (SRS) malfunctions. To get the best results, it
is important to use the diagnostic charts and follow the
sequence listed below:
A
Perform the “SRS Diagnostic System Check."
The “SRS Diagnostic System Check" must be the
starting point of any SRS diagnostics. The “SRS
Diagnostic System Check" checks for proper “AIR
BAG" warning lamp operation, the ability of the
Sensing and Diagnostic Module (SDM) to
communicate through the “Serial Data" line and
whether SRS diagnostic trouble codes exist.
B
Refer to the proper diagnostic chart as directed by
the “SRS Diagnostic System Check."
The “SRS Diagnostic System Check" will lead you
to the correct chart to diagnose any SRS
malfunctions. Bypassing these procedures may
result in extended diagnostic time, incorrect
diagnosis and incorrect parts replacement.
C
Repeat the “SRS Diagnostic System Check" after
any repair or diagnostic procedures have been
performed.
Performing the “SRS Diagnostic System Check"
after all repair or diagnostic procedures will ensure
that the repair has been made correctly and that no
other malfunctions exist
Circuit Description
When the ignition switch is first turned “ON", “ignition 1"
voltage is applied from the “SRS" fuse to the SDM at the
“ignition 1" input terminals “12". The SDM responds by
flashing the “AIR BAG" warning lamp seven times while
performing tests on the SRS.