Suzuki XL7 2007 Service Manual page 2059

5. Use the scan tool in order to clear the SIR and PPS
DTCs.
6. With a scan tool, request the PPS rezeroing
procedure.
7. Initiate the PPS rezeroing procedure. The PPS will
illuminate both PASSENGER AIR BAG ON and OFF
indicators until the rezeroing procedure has been
completed.
– When the rezeroing procedure has been
successfully completed, the PPS will display the
current system status.
– If the rezeroing procedure was unsuccessful, both
PASSENGER AIR BAG ON and OFF indicators
will alternate from no illumination to full
illumination in 1 second intervals for 5 seconds.
The PPS will treat an unsuccessful rezero attempt
as a system fault.
8. If the rezeroing procedure was unsuccessful, repeat
this procedure. Due to the communication status
between the SDM and the PPS module, this
procedure may have to be repeated until a
successful rezero attempt has been achieved.
9. After the PPS has been successfully rezeroed,
perform the "Diagnostic System Check - Vehicle
Diagnostic Information: ".
Air Bag Indicator Circuit Malfunction
Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle
Diagnostic Information: " prior to using this diagnostic
procedure.
• Review "Strategy Based Diagnosis: " for an overview
of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle
Diagnostic Information: " provides an overview of
each diagnostic category.
Circuit/System Description
When the ignition is turned ON, the instrument panel
cluster (IPC) flashes the AIR BAG indicator 7 times. The
inflatable restraint sensing and diagnostic module (SDM)
performs diagnostic tests on the SIR system and then
commands the IPC to turn the AIR BAG indicator OFF if
no SIR malfunction exists. The AIR BAG indicator is
controlled by the SDM via serial data communications. If
the ignition 1 voltage is outside of the normal operating
voltage range 9-16 volts, the SDM will command the IPC
to turn the AIR BAG indicator ON with no DTCs present
then disables all deployment loops.
Reference Information
Schematic Reference
"SIR Schematics"
Connector End View Reference
"SIR Connector End Views"
Description and Operation
"SIR System Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
• "Scan Tool Data List - SIR"
• "Scan Tool Data Definitions - SIR"
Diagnostic Aids
A DTC B1370 may set if the ignition 1 circuit is outside
the 9-16 volts range.
Circuit/System Testing
1. Ignition ON, with a scan tool, verify the Battery
Voltage Parameter is 9-16 volts.
➢ If not the specified range, refer to "Diagnostic
System Check - Vehicle Diagnostic Information: ".
2. Cycle the key from OFF to ON, monitor the IPC. The
SIR warning indicator should flash then turn OFF.
➢ If the SIR warning indicator continually flashes,
reprogram the SDM.
3. With a scan tool, perform the display test to
Commanded the IPC indicators ON then OFF. The
Air Bag indicator should cycle between the
commanded states.
➢ If the Air Bag indicator does not cycle between the
commanded states, replace the IPC.
4. If tests are normal, replace the SDM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
• "SIR/SRS Wiring Repairs: "
• "Control Module References: " for IPC and SDM
replacement, setup, and programming
Air Bag System: 8B-47