Mazda CX-7 2007 Workshop Manual page 1214

DTC B1144, B1145
B1144 Driver-side side air bag sensor No. 2 system internal circuit disabled
DTC
B1145 Driver-side side air bag sensor No. 2 system communication error
Warning
• Detection conditions are for understanding the DTC outline before performing an inspection.
Performing an inspection according to only the detection conditions may cause injury due to
DETECTION an operating error, or damage the system. When performing an inspection, always follow the
CONDITION
inspection procedure.
• Malfunction in wiring harness between driver-side side air bag sensor No. 2 and SAS control module
• Malfunction in driver-side side air bag sensor No. 2 circuit
• Open or short circuit in wiring harness between driver-side side air bag sensor No. 2 and SAS control
POSSIBLE module
• Driver-side side air bag sensor No. 2 malfunction (Including incorrect assembly)
CAUSE
• SAS control module malfunction
SAS CONTROL MODULE WIRING
HARNESS-SIDE CONNECTOR
* *
3W
3T
3X 3U
Diagnostic procedure
STEP
1 INSPECT DRIVER-SIDE SIDE AIR BAG
SENSOR NO. 2 CONNECTOR
Warning
• Handling the air bag system
components improperly can
accidentally deploy the air bag
modules and pre-tensioner seat belts,
which may seriously injure you. Read
the service warnings and cautions
before handling the air bag system
components.
(See 08-10-3 AIR BAG SYSTEM
SERVICE WARNINGS.)
(See 08-10-5 AIR BAG SYSTEM
SERVICE CAUTIONS.)
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and
wait for 1 min or more.
• Remove the trunk side trim (driver-side).
(See 09-17-24 TRUNK SIDE TRIM
REMOVAL/INSTALLATION.)
• Disconnect the driver-side side air bag
sensor No. 2 connector.
• Is there any malfunction of the driver-side
side air bag sensor No. 2 connector?
08-02–12
ON-BOARD DIAGNOSTIC
* * * * * *
* *
* * * *
INSPECTION
DRIVER-SIDE SIDE AIR BAG SENSOR NO. 2
WIRING HARNESS-SIDE CONNECTOR
B A
Yes Replace the air bag wiring harness.
No Go to the next step.
id080200809800
ACTION