Diagnostic procedure
WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - DTC B1996, B1997, B1998, B1999
| STEP |
INSPECTION |
ACTION |
| 1 |
INSPECT PASSENGER-SIDE SIDE AIR BAG MODULE
|
Yes |
[Present malfunction diagnosis]
[Past malfunction diagnosis]
- DTC troubleshooting completed.
|
| No |
Go to the next step. |
| 2 |
INSPECT PASSENGER-SIDE SIDE AIR BAG MODULE CONNECTOR
WARNING:
- Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner front buckles, 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
.
- Disconnect the passenger-side side air bag module connector.
- Is there any malfunction of the passenger-side 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 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 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 B1996, B1997, B1998 and/or B1999 indicated?
|
Yes |
Go to the next step. |
| No |
Replace the passenger-side side air bag module. (See SIDE AIR BAG MODULE REMOVAL/INSTALLATION
.) |
| 4 |
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE 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
.
- Remove the column cover.
- Disconnect the clock spring connector.
- Remove the glove compartment.
- Disconnect the passenger-side air bag module connector.
- Disconnect the driver and passenger-side front seat connectors.
- Partially peel back the floor covering.
- Disconnect the SAS control module connector.
- Inspect the wiring harness between SAS control module terminal 2D and passenger-side side air bag module terminal A, SAS control module terminal 2A 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 |
[Present malfunction diagnosis]
[Past malfunction diagnosis]
- DTC troubleshooting completed.
|
| No |
Replace the air bag wiring harness. |