DTC B1149/37 Front Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The front airbag sensor LH circuit consists of the center airbag sensor assembly and front airbag sensor LH.
If the center airbag sensor assembly receives signals from the front airbag sensor LH, it judges whether or not the SRS should be activated.
DTC B1149/37 is recorded when a malfunction is detected in the front airbag sensor LH circuit
DTC No. |
DTC Detecting Condition |
Trouble Area |
B1149/37 |
|
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK DTC
OK: DTC B1149/37 is not output. HINT: Codes other than DTC B1149/37 may be output at this time, but they are not related to this check.
Go to step 2
USE SIMULATION METHOD TO CHECK
2 CHECK CONNECTION OF CONNECTORS
OK: The connectors are connected
CONNECT CONNECTORS
3 CHECK FRONT AIRBAG SENSOR LH CIRCUIT (OPEN)
NOTICE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
Standard resistance
Go to step 5
4 CHECK FRONT AIRBAG SENSOR LH
Result
HINT: Codes other than DTC B1148/36 and B1149/37 may be output at this time, but they are not related to this check
REPLACE FRONT AIRBAG SENSOR LH
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
USE SIMULATION METHOD TO CHECK
5 CHECK INSTRUMENT PANEL WIRE (OPEN)
HINT: The service wire has already been inserted into connector "B".
Standard resistance
REPAIR OR REPLACE INSTRUMENT PANEL WIRE
REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE REAR NO. 2 SEAT LEG SIDE GARNISH SUB-ASSEMBLY
Disengage the 9 clips and remove the rear No. 2
seat leg side garnish sub-assembly.
Remove the 9 clips from the rear No. 2 seat leg side
garnish sub-assembly.
3. ...
On-vehicle inspection
1. INSPECT FRONT PASSENGER AIRBAG ASSEMBLY
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the front passenger airbag assembly installed
on the vehicle, perform a visual check. If there are
any defects as mentioned below, replace the
instrumen ...
Identification of noise source
1. Radio Description
Radio frequency band
Radio broadcasts use the radio frequency bands
shown in the table below
Service area
The service areas of AM and FM broadcasts are
vastly different. Sometimes an AM broadcast
can be received very clearly but an FM st ...