B1141
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1141/33: Side Airbag Sensor Assembly LH Circuit Malfunction
DTC B1141/33 - Side Airbag Sensor Assembly LH Circuit Malfunction
DESCRIPTION
The side airbag sensor assembly LH circuit consists of the safing sensor, the diagnostic circuit and the lateral deceleration sensor, etc.
If the center airbag sensor assembly receives signals from the lateral deceleration sensor, it judges whether or not the SRS should be activated.
DTC B1141/33 is recorded when a malfunction in the side airbag sensor assembly LH circuit is detected.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC
(a) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(b) Clear the DTCs stored in memory DTC Check / Clear.
(c) Turn the ignition switch to the LOCK position.
(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(e) Check the DTCs DTC Check / Clear.
OK:
DTC B1141/33 is not output.
HINT: Codes other than code B1141/33 may be output at this time, but they are not related to this check.
NG -- CHECK CONNECTION OF CONNECTORS
OK -- USE SIMULATION METHOD TO CHECK
2. CHECK CONNECTION OF CONNECTORS
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor assembly and the side airbag sensor assembly LH.
OK:
The connectors are connected.
NG -- CONNECT CONNECTORS, THEN GO TO STEP 1
OK -- Continue to next step.
3. CHECK FLOOR WIRE NO. 2 (OPEN)
(a) Disconnect the connectors from the center airbag sensor assembly and the front airbag sensor assembly LH.
(b) Using a service wire, connect A27-16 (VUPL) and A27-18 (ESL) of connector "B".
NOTE:
Do not forcibly insert a service wire into the terminals of the connector when connecting.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(d) Using a service wire, connect A27-17 (SSL+) and A27-20 (SSL-) of connector "B".
NOTE:
Do not forcibly insert a service wire into the terminals of the connector when connecting.
(e) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
4. CHECK FLOOR WIRE NO. 2 (SHORT TO B+)
(a) Disconnect the service wire from connector "B".
(b) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
5. CHECK FLOOR WIRE NO. 2 (SHORT TO GROUND)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
6. CHECK FLOOR WIRE NO. 2 (SHORT)
(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
7. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH
(a) Connect the connector to the center airbag sensor assembly.
(b) Interchange the side airbag sensor assembly RH with LH and connect the connectors to them.
(c) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory DTC Check / Clear.
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(h) Check the DTCs DTC Check / Clear.
Result:
NG:B -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
NG:A -- REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH
OK -- USE SIMULATION METHOD TO CHECK