Dtc B1150 (No. 1150): Air Bag Communication Circuit Malfunction - Suzuki Swift Sport 2004 Service & Repair Manual

10B-19 Body Electrical Control System:
Step
2 Check outside air temperature sensor circuit
1) Turn ignition switch to ON position.
2) Measure voltage between "E14-2" terminal of outside air
temperature sensor connector and vehicle body ground.
Is voltage 4 – 6 V?
3 Check outside air temperature sensor circuit
1) Turn ignition switch to OFF position.
2) Check for proper connection to "E46-8" terminal of BCM
connector.
3) If OK, measure resistance between "E14-1" terminal of
outside air temperature sensor connector and vehicle
body ground.
Ω
Is resistance 1 or less?

DTC B1150 (No. 1150): Air Bag Communication Circuit Malfunction

Wiring Diagram
[A]: Junction block assembly connector viewed from harness side
1. SDM
DTC Detecting Condition and Possible Cause
DTC detecting condition
After ignition switch is turned on, abnormal signal is fed
from SDM to BCM.
Flow Test Description
Step 1: Check air bag communication circuit.
Step 2: Check air bag communication circuit.
Step 3: Check air bag communication circuit.
Action Yes
Go to Step 3.
Substitute a known-
good BCM (included in
junction block
assembly) and recheck.
2. BCM
3. Junction block assembly
Possible cause
• Air bag communication circuit open or short
• SDM malfunction
• BCM malfunction
No
Open or short in "YEL/
RED" wire circuit. If OK,
substitute a known-
good BCM (included in
junction block
assembly) and recheck.
Open or high resistance
in "YEL/BLK" wire
circuit.
S7RS0BA204010
I4RS0AA20011-01