Mazda CX-7 2007 Workshop Manual page 1227

Diagnostic procedure
STEP
1 INSPECT DRIVER-SIDE AIR BAG MODULE
(INFLATOR NO.1)
• Using the M-MDS, verify the following PID/
DATA monitor. (See 08-02-8 PID/DATA
MONITOR TABLE.)
— RES_AB_D
• Is the resistance of the driver-side air bag
module normal?
— Resistance: 1.4— 3.9 ohms
2 INSPECT DRIVER-SIDE AIR BAG MODULE
CONNECTOR (CLOCK SPRING)
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 driver-side air bag module.
(See 08-10-6 DRIVER-SIDE AIR BAG
MODULE REMOVAL/INSTALLATION.)
• Is there any malfunction of the driver-side air
bag module connector?
3 VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE AIR BAG MODULE (INFLATOR
NO.1) OR RELATED WIRING HARNESS
• Connect the leads of the SST (Fuel and
thermometer checker) or apply 2-ohm
resistance to driver-side air bag module
(inflator No.1) connector terminals 3A and
3B, and driver-side air bag module (inflator
No.2) connector terminals 4A and 4B.
• 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 B1913, B1916, B1932 and/or
B1934 indicated?
4 INSPECT CLOCK SPRING
• Inspect the clock spring.
(See 08-10-16 CLOCK SPRING
INSPECTION.)
• Is the clock spring normal?
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 Go to the next step.
No Replace the driver-side air bag module.
(See 08-10-6 DRIVER-SIDE AIR BAG MODULE
REMOVAL/INSTALLATION.)
Yes Go to the next step.
No Replace the clock spring.
(See 08-10-15 CLOCK SPRING REMOVAL/
INSTALLATION.)
ACTION
08-02–25
08-02