Mazda 6 2002 - Page 1076

T224
ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
DTC B2477
A6E817401046W22
Diagnostic procedure
End Of Sie
DTC B2773, B2774, B2775, B2776
A6E817401046W23
Diagnostic procedure
DTC B2477 SAS unit configuration error
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.
• SAS unit configuration not set correctly
POSSIBLE
CAUSE
• SAS unit configuration error
• SAS unit malfunction
INSPECTION ACTION
CONFIGRATION
• Configurate SAS unit, using SST (WDS or equivalent).
• Is DTC B2477 indicated?
Yes [Present malfunction diagnosis]
Replace SAS unit.
(See T124 SAS UNIT REMOVAL/INSTALLATION)
[Past malfunction diagnosis]
Troubleshooting completed.
No Troubleshooting completed.
DTC
B2773 Driver-side curtain air bag module system resistance low
B2774 Driver-side curtain air bag module system resistance high
B2775 Driver-side curtain air bag module system circuit short to ground
B2776 Driver-side curtain air bag module system circuit short to power supply
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 1.43.2 ohm) detected in driver-side curtain air bag module circuit
• Malfunction in wiring harness between driver-side curtain air bag module and SAS unit
POSSIBLE
CAUSE
• Open or short circuit in wiring harness between driver-side curtain air bag module and SAS unit
• Driver-side curtain air bag module malfunction
• SAS unit malfunction
STEP INSPECTION ACTION
1 INSPECT DRIVER-SIDE CURTAIN AIR BAG
MODULE
• Check following PID/DATA monitor, using
SST (WDS or equivalent).
(See T195 PID/DATA MONITOR TABLE)
 DR_CURTN
• Is resistant value of driver-side curtain air
bag module normal?
 Resistance: 1.43.2 ohm
Yes
Present malfunction diagnosis:
• Replace SAS unit.
(See T124 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Troubleshooting completed.
No Go to next step.