Mazda 6 2002, Workshop Manual

Page: 1116 / 1248

T–208
ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
DTC B1913, B1916, B1932, B1934
A6E817401046W12
Diagnostic procedure
DTC
B1913 Driver-side air bag module (inflator No.1) system circuit short to ground
B1916 Driver-side air bag module (inflator No.1) system circuit short to power supply
B1932 Driver-side air bag module (inflator No.1) system resistance high
B1934 Driver-side air bag module (inflator No.1) system resistance low
DETECTION
CONDITION
Warning
•
Detection conditions are for understanding DTC outline before performing inspection.
Performing inspection with only detection conditions may cause injury due to operating error
or damage the system. When performing inspection, always follow inspection procedure.
•
Abnormal resistance (other than 1.5—3.7 ohm ) detected in driver-side air bag module (inflator No.1)
circuit
•
Malfunction in wiring harness between driver-side air bag module (inflator No.1) and SAS unit
POSSIBLE
CAUSE
•
Open or short circuit in wiring harness between clock spring and SAS unit
•
Clock spring malfunction
•
Driver-side air bag module (inflator No.1) malfunction
•
SAS unit malfunction
STEP INSPECTION ACTION
1 INSPECT DRIVER-SIDE AIR BAG MODULE
(INFLATOR NO.1)
•
Check following PID/DATA monitor, using
SST (WDS or equivalent).
(See T–195 PID/DATA MONITOR TABLE )
— DABAGR
•
Is resistant value of driver-side air bag
module normal?
— Resistance:
1.5—3.7 ohm
Yes [Present malfunction diagnosis]
Replace SAS unit.
(See
T–124 SAS UNIT REMOVAL/INSTALLATION )
[Part malfunction diagnosis]
Troubleshooting completed.
No Go to next step.
2 INSPECT DRIVER-SIDE AIR BAG MODULE
CONNECTOR (CLOCK SPRING)
Warning
•
Handling air bag system components
improperly can accidentally deploy air
bag modules and pre-tensioner seat
belts, which may seriously injure you.
Read AIR BAG SYSTEM SERVICE
WARNINGS before handling air bag
system components.
(See
T–117 SERVICE WARNINGS )
•
Turn ignition switch to LOCK position.
•
Disconnect negative battery cable and wait
for
more than 1 minute .
•
Remove driver-side air bag module.
•
Is there cracking or chipping in driver-side air
bag module connector?
Yes Replace wiring harness.
No Go to next step.