Mazda CX-7 2007 Workshop Manual page 1241

Diagnostic procedure
STEP
1 INSPECT CRASH ZONE SENSOR
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 crash zone sensor connector.
• Is there any malfunction of the crash zone
sensor connector?
2 INSPECT WIRING HARNESS BETWEEN
CRASH ZONE SENSOR AND SAS CONTROL
MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and
wait for 1 min or more.
• Remove the column cover. (See 09-17-8
COLUMN COVER REMOVAL/
INSTALLATION.)
• Disconnect the clock spring connector.
• Remove the glove compartment.(See 09-17-
8 GLOVE COMPARTMENT REMOVAL/
INSTALLATION.)
• Disconnect the passenger-side air bag
module connector.
• Disconnect the driver and passenger-side
seat connectors.
• 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 and passenger-side
curtain air bag module connector.
• Remove the B-pillar lower trim. (See 09-17-
16 B-PILLAR LOWER TRIM REMOVAL/
INSTALLATION.)
• Disconnect the driver and passenger-side
pre-tensioner seat belt connectors.
• Remove the console. (See 09-17-13
CONSOLE REMOVAL/INSTALLATION.)
• Disconnect the SAS control module
connector.
• Disconnect the crash zone sensor connector.
• Connect the negative battery cable.
• Inspect the wiring harnesses between SAS
control module terminal 1C and crash zone
sensor terminal A, SAS control module
terminal 1B and crash zone sensor terminal
B for the following:
— Short to ground
— Short to power supply
— Open circuit
• Is the wiring harness normal?
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Replace the air bag wiring harness.
No Go to the next step.
Yes Replace the crash zone sensor, then go to the next step.
(See 08-10-10 CRASH ZONE SENSOR REMOVAL/
INSTALLATION.)
No Replace the air bag wiring harness.
ACTION
08-02–39
08-02