Suzuki XL7 2007 Service Manual page 1996

8A-10 Seat Belts:
Circuit/System Verification
1. Ignition ON, command the Passenger Seat Belt
Reminder LED ON and OFF with a scan tool. The
passenger seat belt indicator should turn ON and
OFF as commanded.
➢ If the indicator does not turn ON and OFF with each
command, refer to Passenger Seat Belt Indicator
Malfunction.
2. While sitting in the passenger seat, fasten the
passenger seat belt. The passenger seat belt
indicator should turn off.
➢ If the indicator remains illuminated, refer to Seat
Belt Switch Malfunction.
Circuit/System Testing
NOTE
When removing connectors inspect for
damage or corrosion. Damage or corrosion
in the following requires repair or
replacement of the affected component/
connector.
• The BCM
• The right seat belt switch
• The SDM
• The right seat belt switch harness
connector
• The SDM wiring harness connector
Passenger Seat Belt Indicator Malfunction.
1. Ignition OFF, disconnect the harness connector at
the Inflatable Restraint Passenger Airbag ON/OFF
Indicator.
2. Ignition ON, verify a test lamp illuminates between
the ignition circuit terminal 4 and ground.
➢ If the test lamp does not illuminate, test the ignition
circuit for a short to ground or an open/high
resistance.
3. Connect a test lamp between the ignition circuit
terminal 4 and the control circuit terminal 3.
4. While sitting in the passenger seat, observe the scan
tool Passenger Seat Belt Switch parameter. Buckle
and unbuckle the passenger seat belt, the test lamp
should turn ON and OFF when changing between
the commanded states.
➢ If the test lamp is always ON, test the control circuit
for a short to ground. If the circuit tests normal,
replace the IPC.
➢ If the test lamp is always OFF, test the control
circuit for a short to voltage or and open/high
resistance. If the circuit tests normal, replace the
IPC.
5. If all circuits test normal, test or replace the Inflatable
Restraint Passenger Airbag ON/OFF Indicator.
Seat Belt Switch Malfunction
1. Ignition OFF, disconnect the harness connector at
the right seat belt switch.
2. Ignition OFF, test for less than 5 ohm of resistance
between the low reference circuit terminal A and
ground.
➢ If greater than the specified value, test the low
reference circuit for an open/high resistance. If the
circuit tests normal, replace the SDM.
3. Ignition ON and sitting in the passenger seat, verify
the scan tool passenger seatbelt indicator
commanded parameter reads ON.
➢ If not the specified value, test the signal circuit
terminal for a short to ground. If the circuit tests
normal replace the SDM.
4. Install a 3-amp fused jumper wire between the signal
circuit terminal B and the low reference circuit
terminal A. While sitting in the passenger seat, verify
the scan tool passenger seatbelt indicator
commanded parameter reads OFF.
➢ If not the specified value, test the signal circuit for a
short to voltage or an open/high resistance. If the
circuit tests normal, replace the SDM.
5. If all circuits test normal, replace the right seat belt
switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at
the right seat belt switch.
2. Test for infinite resistance between the signal circuit
terminal B and the low reference terminal A.
➢ If not the specified value, replace the right seat belt
switch.
3. With the seat belt buckled, test for less than 5 ohms
of resistance between the signal circuit terminal B
and the low reference terminal A.
➢ If greater than the specified range, replace the right
seat belt switch.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
• "Front Seat Belt Buckle Replacement"
• "Instrument Panel Inflatable Restraint Module
Indicator Replacement: "
• "Control Module References: " for SDM and IPC
replacement, setup, and programming