DTC B1925, B1933, B1935, B1938

id0802a0810300

DTC

B1925

Passenger-side air bag module (inflator No.1) system circuit short to power supply

B1933

Passenger-side air bag module (inflator No.1) system circuit resistance high

B1935

Passenger-side air bag module (inflator No.1) system circuit resistance low

B1938

Passenger-side air bag module (inflator No.1) system circuit short to ground

DETECTION CONDITION

Warning
• Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection with only detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
• Abnormal resistance (other than 1.9-2.6 ohms) detected in the passenger-side air bag module (inflator No.1) circuit
• Malfunction in the wiring harness between the passenger-side air bag module (inflator No.1) and SAS control module

POSSIBLE CAUSE

• Open or short circuit in the wiring harness between the passenger-side air bag module (inflator No.1) and SAS control module
• Passenger-side air bag module (inflator No.1) malfunction
• SAS control module malfunction

Diagnostic procedure

Step

Inspection

Action

1
INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1) 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 before handling the air bag system components.
(See SERVICE WARNINGS.)
(See SERVICE CAUTIONS.)
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the passenger-side air bag module.
• Is there cracking or chipping in the passenger-side air bag module connector?
Yes
Replace the air bag wiring harness.
No
Go to the next step.
2
VERIFY WHETHER MALFUNCTION IS IN PASSENGER-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 passenger-side air bag module (inflator No.1) connector terminals A and B, and passenger-side air bag module (inflator No.2) connector terminals A and B.
• Set 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.
• Using the WDS or equivalent, check the following PID/DATA monitor:
- OD_PAB1ST
• Is the related wiring harness normal?
Yes
Replace the passenger-side air bag module.
No
Replace the air bag wiring harness, then go to the next step.
3
INSPECT SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Connect the passenger-side air bag module connector.
• Are any one or all of the following DTCs displayed?
- B1925
- B1933
- B1935
- B1938
Yes
[Present malfunction diagnosis]
Replace the SAS control module.
[Past malfunction diagnosis]
Troubleshooting completed.
No
Troubleshooting completed.