Mazda CX-7 2007 Workshop Manual page 1248

Diagnostic procedure
STEP
1 INSPECT DRIVER-SIDE CURTAIN AIR BAG
MODULE
• Using the M-MDS, verify the following PID/
DATA monitor.
(See 08-02-8 PID/DATA MONITOR TABLE.)
— RES_CAB_D
• Is the resistance of the driver-side curtain air
bag module normal?
— Resistance: 1.4— 3.9 ohms
2 INSPECT DRIVER-SIDE CURTAIN AIR BAG
MODULE 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 C-pillar trim. (See 09-17-17 C-
PILLAR TRIM REMOVAL/INSTALLATION.)
• Remove the D-pillar trim. (See 09-17-18 D-
PILLAR TRIM REMOVAL/INSTALLATION.)
• Disconnect the driver-side curtain air bag
module connector.
• Is there any malfunction of the driver-side
curtain air bag module connector?
3 VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE CURTAIN AIR BAG MODULE
OR RELATED WIRING HARNESS
• Connect the leads of the SST (Fuel and
thermometer checker) or apply 2-ohm
resistance to driver-side curtain air bag
module connector terminals A and B.
• Set the resistance of the SST (Fuel and
thermometer checker) to the 2-ohm
position.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Are DTCs B2773, B2774, B2775 and/or
B2776 indicated?
4 INSPECT SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and
wait for 1 min or more.
• Connect the driver-side curtain air bag
module connector.
• Turn the ignition switch to the ON position.
• Are DTCs B2773, B2774, B2775 and/or
B2776 indicated?
End Of Sie
08-02–46
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Replace the SAS control module.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)
No Go to the next step.
Yes Replace the air bag wiring harness.
No Go to the next step.
Yes Replace the air bag wiring harness, then go to the next
step.
No Replace the driver-side curtain air bag module.
(See 08-10-8 CURTAIN AIR BAG MODULE REMOVAL/
INSTALLATION.)
Yes Replace the SAS control module.
(See 08-10-10 SAS CONTROL MODULE REMOVAL/
INSTALLATION.)
No DTC troubleshooting completed.
ACTION