Dtc B1021: Driver Air Bag Initiator Circuit Resistance High - Suzuki Liana RH413 Service Manual

NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components, ensure all components are properly mounted.
• Clear diagnostic trouble codes (Refer to "DTC Clearance"), if any.
• Repeat "Air Bag Diagnostic System Check" to confirm that the trouble has been corrected.

DTC B1021: Driver Air Bag Initiator Circuit Resistance High

Wiring Diagram
GRN
1
2
[A]
[A]: Shorting bar
1. From main fuse
2. Ignition switch
CAUTION
!
• Be sure to perform "Air Bag Diagnostic System Check" before starting diagnosis according to flow.
• When measurement of resistance or voltage is required in this table, use a specified digital
multimeter (Refer to "Special Tool".) along with a correct terminal adapter from special tool
(Connector test adapter kit).
• When a check for proper connection is required, refer to "Inspection of Intermittents and Poor
Connections".
• If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace
the wire harness, connector and terminal as an assembly.
DTC Will Set when
The combined resistance of the driver air bag (inflator) module, contact coil assembly, harness wiring and connector
terminal contact is above a specified value for specified time.
Flow Test Description
Step 1: Check whether malfunction is in contact coil and driver air bag (inflator) module or the others.
Step 2: Check driver air bag (inflator) module initiator circuit in air bag harness.
Step 3: Check whether malfunction is in contact coil or driver air bag (inflator) module.
"L70"
"G14"
"L80"
3
RED
RED
BLK
7
3. "AIR BAG" fuse
4. SDM
5. Contact coil assembly
4
"L70"
+12V
L70-32
L70-27
L70-26
L70-31
6. Driver air bag (inflator) module
7. Ground for air bag system
Air Bag System:
"L28"
5
GRN/RED
GRN
8B-40
S3RH0A8204018
"L81"
6
I2RH01820026-01