DTC B2438, B2439, B2692
id080200802600
DTC |
B2438 |
Passenger‐side front buckle switch circuit short to body ground |
---|---|---|
B2439 |
Passenger-side front buckle switch circuit resistance not within specification |
|
B2692 |
Passenger‐side front buckle switch circuit open or short to power supply |
|
DETECTION CONDITION
|
• Malfunction in the passenger-side front buckle switch circuit
|
|
POSSIBLE CAUSE
|
• Malfunction of the connectors between the passenger-side front buckle switch and SAS control module
• Passenger-side front buckle switch malfunction
• Open or short circuit in the wiring harness between the passenger-side front buckle switch and body ground
• Open circuit or short to ground in the wiring harness between the passenger-side front buckle switch and SAS control module
• Open circuit or power supply short in the wiring harness between the passenger-side front buckle switch and SAS control module
• SAS control module malfunction
|
|
![]() |
Diagnostic procedure
Step |
Inspection |
Action |
|
---|---|---|---|
1
|
INSPECT PASSENGER-SIDE FRONT BUCKLE SWITCH CONNECTOR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION.)
• Disconnect the passenger-side front buckle switch connector. (See FRONT BUCKLE REMOVAL/INSTALLATION.)
• Inspect the passenger-side front buckle switch connection. (Corrosion, damage, and disconnected pins)
• Is there any malfunction of the passenger-side front buckle switch connector?
|
Yes
|
Replace the passenger-side front buckle switch wiring harness.
|
No
|
Go to the next step.
|
||
2
|
INSPECT PASSENGER-SIDE FRONT BUCKLE SWITCH
• Remove the passenger-side front buckle.
• Inspect the passenger-side front buckle switch.
• Is the passenger-side front buckle switch normal?
|
Yes
|
Go to the next step.
|
No
|
Replace the passenger-side front buckle.
|
||
3
|
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE BUCKLE SWITCH AND GROUND
• Inspect the wiring harness between passenger-side front buckle switch terminal F and ground for the following:
• Is the wiring harness normal?
|
Yes
|
Go to the next step.
|
No
|
Replace the wiring harness.
|
||
4
|
INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND PASSENGER-SIDE FRONT BUCKLE SWITCH
• Disconnect all SAS control module connectors.
• Inspect the wiring harness between SAS control module terminal 2H and passenger-side front buckle switch terminal E for the following:
• Is the wiring harness normal?
|
Yes
|
Go to the next step.
|
No
|
Replace the wiring harness between the SAS control module and the passenger-side front buckle.
|
||
5
|
INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND PASSENGER-SIDE FRONT BUCKLE SWITCH FOR A SHORT CIRCUIT TO THE POWER SUPPLY
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage of SAS control module connector terminals 2H.
• Is the voltage measured?
|
Yes
|
Replace the wiring harness between the SAS control module and the passenger-side front buckle.
|
No
|
Go to the next step.
|
||
6
|
PERFORM DTC INSPECTION
• Disconnect the negative battery cable and wait for 1 min or more.
• Connect the passenger-side front buckle switch connector.
• Connect the SAS control module connectors.
• Connect the negative battery cable.
• Clear DTCs using the M-MDS.
(See DTC DISPLAY.)
• Verify DTCs using the M-MDS.
(See DTC DISPLAY.)
• Are DTCs B2438, B2439, B2692 displayed?
|
Yes
|
Replace the SAS control module.
|
No
|
DTC troubleshooting completed.
|