DTC B1925, B1933, B1935, B1938

id0802a0810300

DTC

B1925

Passenger-side air bag module system circuit short to power supply

B1933

Passenger-side air bag module system circuit resistance high

B1935

Passenger-side air bag module system circuit resistance low

B1938

Passenger-side air bag module 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.
• Resistance other than 1.9-2.6 ohms detected in passenger-side air bag module circuit
• Malfunction in the wiring harness between the passenger-side air bag module and SAS control module

POSSIBLE CAUSE

• Open or short circuit in the wiring harness between the passenger-side air bag module and SAS control module
• Passenger-side air bag module malfunction
• SAS control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT PASSENGER-SIDE AIR BAG MODULE
• Using the WDS or equivalent, verify the following PID/DATA monitor.
- OD_PAB1_ST
• Is the resistance of the passenger-side air bag module normal?
- Resistance: 1.9-2.6 ohms
Yes
Replace the SAS control module.
No
Go to the next step.
2
INSPECT PASSENGER-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 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 glove compartment.
• Disconnect the passenger-side air bag module connector.
• Is there any malfunction of the passenger-side air bag module connector?
Yes
Replace the air bag wiring harness.
No
Go to the next step.
3
VERIFY WHETHER MALFUNCTION IS IN PASSENGER-SIDE AIR BAG MODULE 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 connector terminals A and B.
• Set the 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.
• Are DTCs B1925, B1933, B1935 and/or B1938 indicated?
Yes
Replace the air bag wiring harness, then go to the next step.
No
Replace the passenger-side air bag module.
4
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE AIR BAG MODULE AND SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Disconnect the driver and passenger-side side air bag connectors.
• Disconnect the driver and passenger-side curtain air bag module connectors.
• Remove the console.
• Inspect the wiring harness between SAS control module terminal 2E and passenger-side air bag module terminal A, SAS control module terminal 2I and passenger-side side air bag module terminal B for the following:
- Short to ground
- Short to power supply
- Open circuit
• Is the wiring harness normal?
Yes
Replace the SAS control module.
No
Replace the air bag wiring harness.