Suzuki 2006 SX4, Service Manual

Page: 1417 / 1478

Body Electrical Control System: 10B-18
DTC B1157 (No. 1157) Air Bag Deployment Signal Input
S6RW0CA204011
Wiring Diagram
Refer to “DTC B1150 (No. 1150): Air Bag Communication Circuit Malfunction”.
DTC Detecting Condition and Possible Cause
Flow Test Description
Step 1: Check DTC for SDM.
DTC Troubleshooting
DTC B1170 (No. 1170): EEPROM Access Error
S6RW0CA204012
DTC Detecting Condition and Possible Cause
DTC Troubleshooting
NOTE
Before performing steps below, be sure to perform “Body Electrical Control System Check”.
1) Ignition switch OFF.
2) Replace BCM.
3) Repeat BCM Check Flow Table.
DTC U0073 (No. 0073): Control Module
Communication Bus Off
S6RW0CA204013
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U0100 (No. 0100): Lost Communication
with ECM
S6RW0CA204014
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U0101 (No. 0101): Lost Communication
with TCM
S6RW0CA204018
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U0155 (No. 0155): Lost Communication
with Instrument Panel Cluster (IPC) Control
Module
S6RW0CA204015
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC U1144 (No. 1144): Lost Communication
with Keyless Start Control Module
S6RW0CA204016
Refer to “Troubleshooting for CAN-DTC in Section 1A”.
DTC detecting condition Possible cause
Air bag deployment signal is fed from SDM to BCM. • Air bag component parts
• BCM malfunction
Step Action Yes No
1 DTC check of SDM
1) Check DTC stored in SDM referring to “DTC Check in
Section 8B”.
Is DTC B1021 detected?
Go to “DTC B1021:
Front Air Bag
Deployment Record in
Section 8B”. Substitute a known-
good BCM (included in
junction block) and
recheck.
DTC detecting condition Possible cause
Data write error or check sum error. BCM malfunction