Part 1
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1610/13,B1615/14: Front Airbag Sensor RH Circuit Malfunction
DTC B1610/13 - Front Airbag Sensor RH Circuit Malfunction
DTC B1615/14 - Front Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The front airbag sensor RH consists of parts such as the diagnostic circuit and the frontal detection sensor.
The configuration of the front airbag sensor LH is the same as that of the RH.
When the center airbag sensor assembly receives signals from the frontal deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1610/13 is set when a malfunction is detected in the front airbag sensor RH circuit.
DTC B1615/14 is set when a malfunction is detected in the front airbag sensor LH circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION: In order to prevent unexpected airbag deployment, disconnect the following connectors before inspecting parts such as wire harnesses, if the application of tester probes to the center airbag sensor assembly connector is necessary.
(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 connectors from the center airbag sensor assembly.
(d) Disconnect the connectors from the steering pad.
(e) Disconnect the connector from the front passenger airbag assembly.
(f) Disconnect the connector from the front seat outer belt assembly LH.
(g) Disconnect the connector from the front seat outer belt assembly RH.
HINT: Skip the following steps if side and curtain shield airbags are not fitted.
(h) Disconnect the connector from the front seat airbag assembly LH.
(i) Disconnect the connector from the front seat airbag assembly RH.
(j) Disconnect the connector from the curtain shield airbag assembly LH.
(k) Disconnect the connector from the curtain shield airbag assembly RH.
PROCEDURE
1. CHECK DTC
(a) Proceed to the appropriate step according to DTC readings.
(1) Check the DTC DTC Check / Clear.
Result:
D -- USE SIMULATION METHOD TO CHECK
C -- CHECK CONNECTION OF CONNECTORS
B -- CHECK CONNECTION OF CONNECTORS
A -- Continue to next step.
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 airbag sensor front RH.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS
OK -- Continue to next step.
3. CHECK CONNECTOR
(a) Check that the connectors (on the center airbag sensor assembly side and airbag sensor front RH side) are not damaged Electronic Circuit Inspection Procedure.
OK:
The connectors are not deformed or damaged.
NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.
4. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (FOR OPEN)
(a) Disconnect the connectors from the center airbag sensor assembly and the front airbag sensor RH.
(b) Using a service wire, connect A12-2 (+SR) and A12-1 (-SR) of connector E.
NOTICE: Do not forcibly insert the service wires into the terminals of the connector when connecting.
(c) Measure the resistance.
Standard resistance:
NG -- CHECK ENGINE ROOM MAIN WIRE (FOR OPEN)
OK -- Continue to next step.
5. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (FOR SHORT)
(a) Disconnect the service wire from connector E.
(b) Measure the resistance.
Standard resistance:
NG -- CHECK ENGINE ROOM MAIN WIRE (FOR SHORT)
OK -- Continue to next step.
6. CHECK FRONT AIRBAG SENSOR RH 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.
Standard voltage:
NG -- CHECK ENGINE ROOM MAIN WIRE (TO B+)
OK -- Continue to next step.
7. CHECK FRONT AIRBAG SENSOR RH 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.
Standard resistance:
NG -- CHECK ENGINE ROOM MAIN WIRE (TO GROUND)
OK -- Continue to next step.
8. CHECK FRONT AIRBAG SENSOR RH
(a) Connect the connectors to the center airbag sensor assembly.
(b) Interchange the airbag sensor front 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 the ON position, and wait for at least 60 seconds.
(e) Clear any DTCs stored in the 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:
C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE FRONT AIRBAG SENSOR RH
A -- Continue to next step.
9. REPLACE CENTER AIRBAG SENSOR ASSEMBLY
(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) Replace the center airbag sensor assembly Removal.
HINT: Perform the inspection using parts from a normal vehicle when possible.
(d) Connect the connectors to the center 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 the ON position, and wait for at least 60 seconds.
(g) Clear any DTCs stored in the memory DTC Check / Clear.
(h) Turn the ignition switch to the LOCK position.
(i) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(j) Check for DTCs DTC Check / Clear.
OK:
DTC B1610/13 is not output.
HINT: DTCs other than B1610/13 may be output at this time, but they are not related to this check.
NG -- REPLACE FRONT AIRBAG SENSOR RH
OK -- END
10. 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.
Standard resistance:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
11. CHECK ENGINE ROOM MAIN WIRE (FOR SHORT)
(a) Disconnect the engine room main wire connector from the instrument panel wire.
(b) Measure the resistance.
Standard resistance:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
12. 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.
Standard voltage:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
13. CHECK ENGINE ROOM MAIN WIRE (TO GROUND)
(a) Disconnect the engine room main wire connector from the instrument panel wire.
(b) Measure the resistance.
Standard resistance:
NG -- REPAIR OR REPLACE ENGINE ROOM MAIN WIRE
OK -- REPAIR OR REPLACE INSTRUMENT PANEL WIRE
14. 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 front airbag sensor LH.
OK:
The connectors are properly connected.
NG -- CONNECT CONNECTORS
OK -- Continue to next step.