B1615
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1615/14: Front Airbag Sensor LH Circuit Malfunction
DTC B1615/14 - Front Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The front airbag sensor LH consists of the diagnostic circuit, the frontal deceleration sensor, etc.
If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1615/14 is recorded when a malfunction is detected in the front airbag sensor LH circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR 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 for DTCs DTC Check / Clear.
OK:
DTC B1615/14 is not output.
HINT: Codes other than code B1615/14 may be output at this time, but they are not related to this check.
NG -- CHECK CONNECTION OF CONNECTORS
OK -- PERFORM SYMPTOM SIMULATION
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 and the front airbag sensor LH.
OK:
The connectors are connected.
NG -- CONNECT CONNECTORS
OK -- Continue to next step.
3. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (OPEN)
(a) Disconnect the connectors from the center airbag sensor.
(b) Disconnect the connectors from the horn button.
(c) Disconnect the connectors from the front passenger airbag.
(d) Disconnect the connector from the No. 1 instrument panel airbag lower.
(e) w/ Side and curtain shield airbag:
Disconnect the connector from the front seat airbag LH.
(f) w/ Side and curtain shield airbag:
Disconnect the connector from the front seat airbag RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connector from the curtain shield airbag LH.
(h) w/ Side and curtain shield airbag:
Disconnect the connector from the curtain shield airbag RH.
(i) Disconnect the connector from the front seat outer belt LH.
(j) Disconnect the connector from the front seat outer belt RH.
(k) Using a service wire, connect A4-2 and A4-1 of connector "E".
NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
(l) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- CHECK ENGINE ROOM MAIN WIRE (OPEN)
OK -- Continue to next step.
4. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (SHORT)
(a) Disconnect the service wire from connector "E".
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- CHECK ENGINE ROOM MAIN WIRE
OK -- Continue to next step.
5. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (TO B+)
(a) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- CHECK ENGINE ROOM MAIN WIRE (TO B+)
OK -- Continue to next step.
6. CHECK FRONT AIRBAG SENSOR LH CIRCUIT (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 -- CHECK ENGINE ROOM MAIN WIRE (TO GROUND)
OK -- Continue to next step.
7. CHECK FRONT AIRBAG SENSOR LH
(a) Connect the connectors to the center airbag sensor.
(b) Interchange the front airbag sensor LH with RH 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 for DTCs DTC Check / Clear.
Result
B -- REPLACE FRONT AIRBAG SENSOR LH
A -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
C -- PERFORM SYMPTOM SIMULATION
8. CHECK ENGINE ROOM MAIN WIRE (OPEN)
(a) Disconnect the engine room main wire connector from the instrument panel wire.
HINT: Connector "E" has already been inserted into the service wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
9. CHECK ENGINE ROOM MAIN WIRE
(a) Disconnect the engine room main wire connector from the instrument panel wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
10. CHECK ENGINE ROOM MAIN WIRE (TO B+)
(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) Disconnect the engine room main wire connector from the instrument panel wire.
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position.
(f) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
11. CHECK ENGINE ROOM MAIN WIRE (TO GROUND)
(a) Disconnect the engine room main wire connector from the instrument panel wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE