DTC B2445, U2018
id080200802800
|
DTC |
B2445 |
Passenger‐side side air bag sensor No.1 (internal circuit abnormal) |
|---|---|---|
|
U2018 |
Passenger‐side side air bag sensor No.1 (communication error) |
|
|
DETECTION CONDITION
|
• Malfunction in the wiring harness between the passenger-side side air bag sensor and SAS control module
• Malfunction in the passenger-side side air bag sensor circuit
|
|
|
POSSIBLE CAUSE
|
• Passenger-side side air bag sensor No.1 connector malfunction
• Open or short circuit in wiring harness between passenger-side side air bag sensor No.1 and SAS control module
• Passenger-side side air bag sensor No.1 malfunction (Including incorrect assembly)
• SAS control module malfunction
|
|
![]() |
||
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
INSPECT PASSENGER‐SIDE SIDE AIR BAG SENSOR NO.1 CONNECTOR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the B-pillar lower trim (passenger-side).
• Disconnect the passenger-side side air bag sensor No.1 connector.
• Is there any malfunction of the passenger-side side air bag sensor No.1 connector?
|
Yes
|
Replace the air bag wiring harness.
|
|
No
|
Go to the next step.
|
||
|
2
|
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE SIDE AIR BAG SENSOR NO.1 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. (See COLUMN COVER REMOVAL/INSTALLATION.)
• Disconnect the clock spring connector.
• Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
• Disconnect the passenger-side air bag module connector.
• Disconnect the driver and passenger-side seat connectors.
• Disconnect the driver and passenger-side curtain air bag module connector.
• Remove the B-pillar lower trim. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.)
• Disconnect the driver and passenger-side pre-tensioner seat belt connectors.
• Disconnect the passenger-side side air bag sensor No.1 connector.
• Remove the console. (See CONSOLE REMOVAL/INSTALLATION.)
• Disconnect the SAS control module connector.
• Connect the negative battery cable.
• Inspect the wiring harnesses between SAS control module connector terminal 2C and passenger-side side air bag sensor No.1 connector terminal A, SAS control module connector terminal 2B and passenger-side side air bag sensor No.1 connector terminal B for the following:
• Is the wiring harness normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the air bag wiring harness.
|
||
|
3
|
INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND PASSENGER-SIDE SIDE AIR BAG SENSOR NO.1 FOR A SHORT CIRCUIT TO THE POWER SUPPLY
• Connect the negative battery cable.
• Turn the ignition switch to the ON position with SAS control module connector and passenger-side air bag sensor No.1 disconnected.
• Measure the voltage of SAS control module connector terminals 2C and 2B of SAS control module harness side connector.
• Is the voltage measured?
|
Yes
|
Replace the wiring harness between the SAS control module and the passenger-side side air bag sensor No.1.
|
|
No
|
Replace the passenger-side side air bag sensor No.1, then go to the next step.
|
||
|
4
|
PERFORM DTC INSPECTION
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Reconnect all disconnected connectors.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Clear DTCs using the M-MDS.
(See CLEARING DTC.)
• Perform the DTC inspection for the SAS control module using the M-MDS.
(See DTC DISPLAY.)
• Are DTCs B2445 and/or U2018 displayed?
|
Yes
|
Replace the SAS control module.
|
|
No
|
DTC troubleshooting completed.
|
||