Dtc B1054 / B1058: Seat Belt Pretensioner Circuit Shorted To Power Supply - Suzuki SX4 Service Manual

8B-53 Air Bag System:

DTC B1054 / B1058: Seat Belt Pretensioner Circuit Shorted to Power Supply

DTC B1054: Driver Seat Belt Pretensioner Circuit Shorted to Power Supply
DTC B1058: Passenger Seat Belt Pretensioner Circuit Shorted to Power Supply
Wiring Diagram
Refer to "DTC B1051 / B1055: Seat Belt Pretensioner Circuit High Resistance".
DTC Detecting Condition and Trouble Area
DTC detecting condition
DTC B1054:
Driver seat belt pretensioner circuit has been shorted to
power supply for more than 4 sec.
DTC B1058:
Passenger seat belt pretensioner circuit has been shorted
to power supply for more than 4 sec.
DTC Troubleshooting
Step
1 Was "Air Bag Diagnostic System Check Flow" performed?
2 Seat belt pretensioner circuit check
1) With ignition switch turned OFF, remove center pillar
lower trim of applicable side and disconnect applicable
seat belt pretensioner connector "L283" or "L285".
2) Disconnect SDM connector "L04".
3) Check for proper connection to applicable seat belt
pretensioner at terminals in "L283" or "L285".
4) Check for proper connection to SDM at terminals "L04-7"
and "L04-8" (for DTC B1054) or terminals "L04-9" and
"L04-10" (for DTC B1058).
5) If OK, release shorting bar in SDM connector inserting
release tool (1) included in special tool (A).
6) With ignition switch turned ON, measure voltage
between "L04-7" and body ground, and between "L04-8"
and body ground (for DTC B1054).
7) Measure voltage between "L04-9" and body ground and
between "L04-10" and body ground (for DTC B1058).
Special tool
(A): 09932–76010
"L04-7" "L04-8" "L04-9" "L04-10"
Is each measured voltage 0 V?
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to "DTC Clearance", if any.
• Repeat "Air Bag Diagnostic System Check" to confirm that the trouble has been corrected.
Action
(A)
1,(A)
I7RW01822063-01
Trouble area
• Driver / passenger seat belt pretensioner circuit
• SDM
Yes
Go to Step 2.
Substitute a known-
good SDM and recheck.
S7RW0A8204029
No
Go to "Air Bag
Diagnostic System
Check Flow".
Repair short to power
supply in defective
circuit.