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 B2438, B2439, B2692
| STEP |
INSPECTION |
ACTION |
| 1 |
INSPECT PASSENGER-SIDE BUCKLE SWITCH CIRCUIT
|
Yes |
Present malfunction diagnosis:
Past malfunction diagnosis:
- DTC troubleshooting completed.
|
| No |
Go to next step. |
| 2 |
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE BUCKLE SWITCH AND GROUND
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
)
- Inspect the wiring harness between passenger-side front buckle switch terminal H and ground for the following:
- Short to power supply
- Open circuit
- Is the wiring harness normal?
|
Yes |
Go to the next step. |
| No |
Replace the wiring harness. |
| 3 |
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE BUCKLE SWITCH 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 side air bag module connectors.
- Disconnect the driver and passenger-side pre-tensioner seat belt connectors.
- Partially peel back the floor covering.
- Disconnect the SAS control module connector.
- Inspect the wiring harness between SAS control module terminal 2H and passenger-side front buckle switch terminal A 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 wiring harness. |