Mazda CX-7 2007 Workshop Manual page 1231

DTC B1992, B1993, B1994, B1995
B1992 Driver-side side air bag module circuit short to power supply
B1993 Driver-side side air bag module circuit short to body ground
DTC
B1994 Driver-side side air bag module circuit resistance high
B1995 Driver-side side air bag module circuit resistance low
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.
• Abnormal resistance (other than 1.4— 3.9 ohms) detected in the driver-side side air bag module circuit
• Malfunction in the wiring harness between the driver-side side air bag module and SAS control module
• Open or short circuit in the wiring harness between the driver-side side air bag module and SAS control
POSSIBLE module
• Driver-side side air bag module malfunction
CAUSE
• SAS control module malfunction
Diagnostic procedure
STEP
1 INSPECT DRIVER-SIDE SIDE AIR BAG
MODULE
• Using the M-MDS, verify the following PID/
DATA monitor.
(See 08-02-8 PID/DATA MONITOR TABLE.)
— RES_SAB_D
• Is the resistance of the driver-side side air
bag module normal?
— Resistance: 1.4— 3.9 ohms
2 INSPECT DRIVER-SIDE SIDE 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.
• Disconnect the driver-side side air bag
module connector.
• Is there any malfunction of the driver-side
side air bag module connector?
ON-BOARD DIAGNOSTIC
DRIVER-SIDE SIDE AIR BAG MODULE
WIRING HARNESS-SIDE CONNECTOR
B
INSPECTION
A
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.
id080200801900
ACTION
08-02–29
08-02