DESCRIPTION
The front airbag sensor LH consists of parts such as the diagnostic circuit and the frontal detection sensor.
When the airbag sensor assembly receives signals from the frontal deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1615/14 is set when a malfunction is detected in the front airbag sensor LH circuit.
DTC No. |
DTC Detecting Condition |
Trouble Areas |
---|---|---|
B1615/14 |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal. Therefore, make sure to read the
disconnecting the cable from the negative (-) battery terminal notices before proceeding
with work (See page ).
PROCEDURE
1. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(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 airbag sensor assembly and the front airbag sensor LH.
OK:
The connectors are properly connected.
NG | ![]() |
CONNECT CONNECTORS |
|
2. |
CHECK CONNECTOR |
(a) Check that the connectors (on the airbag sensor assembly side and front airbag
sensor LH side) are not damaged (See page ).
OK:
The connectors are not deformed or damaged.
NG | ![]() |
REPLACE WIRE HARNESS |
|
3. |
CHECK FRONT AIRBAG SENSOR LH CIRCUIT (FOR OPEN) |
(a) Disconnect the connectors from the airbag sensor assembly and the front airbag sensor LH. |
|
(b) Using a service wire, connect A11-2 (+SL) and A11-1 (-SL) of connector E.
NOTICE:
Do not forcibly insert the 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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A21 -30 (+SL) - A21-28 (-SL) |
Always |
Below 1 Ω |
*1 |
Front Airbag Sensor LH |
*2 |
Airbag Sensor Assembly |
*3 |
Service Wire |
NG | ![]() |
GO TO STEP 9 |
|
4. |
CHECK FRONT AIRBAG SENSOR LH CIRCUIT (FOR SHORT) |
(a) Disconnect the service wire from connector E. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A21 -30 (+SL) - A21-28 (-SL) |
Always |
1 MΩ or Higher |
*1 |
Front Airbag Sensor LH |
*2 |
Airbag Sensor Assembly |
NG | ![]() |
GO TO STEP 10 |
|
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 ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A21 -30 (+SL) - Body ground |
Ignition switch ON |
Below 1 V |
A21-28 (-SL) - Body ground |
Ignition switch ON |
Below 1 V |
*1 |
Front Airbag Sensor LH |
*2 |
Airbag Sensor Assembly |
NG | ![]() |
GO TO STEP 11 |
|
6. |
CHECK FRONT AIRBAG SENSOR LH CIRCUIT (TO GROUND) |
(a) Turn the ignition switch off. |
|
(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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A21 -30 (+SL) - Body ground |
Always |
1 MΩ or Higher |
A21-28 (-SL) - Body ground |
Always |
1 MΩ or Higher |
*1 |
Front Airbag Sensor LH |
*2 |
Airbag Sensor Assembly |
NG | ![]() |
GO TO STEP 12 |
|
7. |
CHECK FRONT AIRBAG SENSOR LH |
(a) Connect the connectors to the airbag sensor assembly.
(b) Interchange the front airbag sensor RH with the front airbag sensor 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 ON, and wait for at least 60 seconds.
(e) Clear any DTCs stored in the memory (See page
).
(f) Turn the ignition switch off.
(g) Turn the ignition switch to ON, and wait for at least 60 seconds.
(h) Check for DTCs (See page ).
Result |
Proceed to |
---|---|
DTC B1615/14 is output. |
A |
DTC B1610/13 is output. |
B |
Neither DTC B1610/13 nor B1615/14 is output. |
C |
B | ![]() |
REPLACE FRONT AIRBAG SENSOR LH |
C | ![]() |
USE SIMULATION METHOD TO CHECK |
|
8. |
REPLACE AIRBAG SENSOR ASSEMBLY |
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Replace the airbag sensor assembly (See page
).
HINT:
Perform the inspection using parts from a normal vehicle when possible.
(d) Connect the connectors to the airbag sensor assembly.
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Clear any DTCs stored in the memory (See page
).
(h) Turn the ignition switch off.
(i) Turn the ignition switch to ON, and wait for at least 60 seconds.
(j) Check for DTCs (See page ).
OK:
DTC B1615/14 is not output.
HINT:
DTCs other than B1615/14 may be output at this time, but they are not related to this check.
OK | ![]() |
END |
NG | ![]() |
REPLACE FRONT AIRBAG SENSOR LH |
9. |
CHECK ENGINE ROOM MAIN WIRE (FOR OPEN) |
(a) Disconnect the engine room main wire connector from the instrument panel wire. HINT: The service wire has already been inserted into connector E. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
IS1-3 (-SL) - IS1-4 (+SL) |
Always |
Below 1 Ω |
*1 |
Front Airbag Sensor LH |
*2 |
Engine Room Main Wire |
*3 |
Instrument Panel Wire |
*4 |
Airbag Sensor Assembly |
*5 |
Service Wire |
OK | ![]() |
REPLACE INSTRUMENT PANEL WIRE |
NG | ![]() |
REPLACE ENGINE ROOM MAIN WIRE |
10. |
CHECK ENGINE ROOM MAIN WIRE (FOR SHORT) |
(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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
IS1-3 (-SL) - IS1-4 (+SL) |
Always |
1 MΩ or Higher |
*1 |
Front Airbag Sensor LH |
*2 |
Engine Room Main Wire |
*3 |
Instrument Panel Wire |
*4 |
Airbag Sensor Assembly |
OK | ![]() |
REPLACE INSTRUMENT PANEL WIRE |
NG | ![]() |
REPLACE ENGINE ROOM MAIN WIRE |
11. |
CHECK ENGINE ROOM MAIN WIRE (TO B+) |
(a) Turn the ignition switch off. |
|
(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 ON.
(f) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
IS1-3 (-SL) - Body ground |
Ignition switch ON |
Below 1 V |
IS1-4 (+SL) - Body ground |
Ignition switch ON |
Below 1 V |
*1 |
Front Airbag Sensor LH |
*2 |
Engine Room Main Wire |
*3 |
Instrument Panel Wire |
*4 |
Airbag Sensor Assembly |
OK | ![]() |
REPLACE INSTRUMENT PANEL WIRE |
NG | ![]() |
REPLACE ENGINE ROOM MAIN WIRE |
12. |
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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
IS1-3 (-SL) - Body ground |
Always |
1 MΩ or Higher |
IS1-4 (+SL) - Body ground |
Always |
1 MΩ or Higher |
*1 |
Front Airbag Sensor LH |
*2 |
Engine Room Main Wire |
*3 |
Instrument Panel Wire |
*4 |
Airbag Sensor Assembly |
OK | ![]() |
REPLACE INSTRUMENT PANEL WIRE |
NG | ![]() |
REPLACE ENGINE ROOM MAIN WIRE |
Precaution
PRECAUTION
1. EXPRESSIONS OF IGNITION SWITCH
HINT:
The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch
(Position)
...
Ptc Heater Assembly
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY
(See page )
2. REMOVE INSTRUMENT LOWER PANEL ASSEMBLY
3. REMOVE AIR DUCT ASSEMBLY
4. REMOVE QUICK HEATER ASSEMBLY
(a) Disconnect the connector.
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL PARK/NEUTRAL POSITION SWITCH
HINT:
Make sure that the manual valve lever shaft has not been rotated prior to installing
the park/neutral position switch as the detent spring may become detached from the
manual valve lever shaft.
(a) Clean the bolt and bolt ...