RM3660EC _58 Vehicle Interior _080741 SUPPLEMENTAL RESTRAINT SYSTEMS _0610731 AIRBAG SYSTEM(for NR Series Engine) C

SUPPLEMENTAL RESTRAINT SYSTEMS AIRBAG SYSTEM(for NR Series Engine) B1612 Front Airbag Sensor Lost Communication (RH) B1613 Front Airbag Sensor Initialization Error (RH)

DESCRIPTION

The front airbag sensor RH circuit consists of the airbag sensor with ECU assembly and front airbag sensor RH.

The front airbag sensor RH detects impacts to the vehicle and sends signals to the airbag sensor with ECU assembly to determine if the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the front airbag sensor RH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1612	Front Airbag Sensor Lost Communication (RH)	· The airbag sensor with ECU assembly detects a line short, short to ground or B+, or an open in the front airbag sensor RH circuit. · Front airbag sensor RH malfunction · Airbag sensor with ECU assembly malfunction	· Instrument panel wire · Engine room main wire · Front airbag sensor RH · Airbag sensor with ECU assembly	Comes on	Does not apply to test/check mode
B1613	Front Airbag Sensor Initialization Error (RH)	· The airbag sensor with ECU assembly detects a line short, short to ground or B+, or an open in the front airbag sensor RH circuit. · Front airbag sensor RH malfunction · Airbag sensor with ECU assembly malfunction	· Instrument panel wire · Engine room main wire · Front airbag sensor RH · Airbag sensor with ECU assembly	Comes on	Does not apply to test/check mode

WIRING DIAGRAM

4.781,2.896 7.052,3.344 2.271,0.448 10 false Airbag Sensor with ECU Assembly 4.771,2.729 6.844,3.198 2.073,0.469 10 false I47 4.583,1.021 5.042,1.323 0.458,0.302 10 false 29 4.583,1.698 5.333,2.073 0.75,0.375 10 false 28 4.833,1.021 5.292,1.323 0.458,0.302 10 false +SR 4.844,1.698 5.594,2.073 0.75,0.375 10 false -SR 5.479,1.448 6.156,1.74 0.677,0.292 10 false Interface 1.771,1.448 2.448,1.74 0.677,0.292 10 false Interface 0.76,1.448 1.438,1.74 0.677,0.292 10 false Element 3.781,1.125 4.24,1.427 0.458,0.302 10 false AI4 3.781,1.802 4.24,2.104 0.458,0.302 10 false AI4 3.833,0.938 4.292,1.24 0.458,0.302 10 false 4 3.833,1.615 4.292,1.917 0.458,0.302 10 false 3 3.042,1.021 3.5,1.323 0.458,0.302 10 false 2 3.042,1.708 3.5,2.01 0.458,0.302 10 false 1 2.667,1.021 3.125,1.323 0.458,0.302 10 false +SR 2.708,1.708 3.458,2.083 0.75,0.375 10 false -SR 0.563,2.344 2.635,2.813 2.073,0.469 10 false A40 0.563,2.521 2.635,2.99 2.073,0.469 10 false Front Airbag Sensor RH

CAUTION / NOTICE / HINT

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY202304,202502,_V1,_143216,_0598315,RM100000002B3MI,202502,999999,_V1,_143216,_0598315,RM100000002RP07,

HINT:: When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.; Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART202304,999999,_V1,_143216,_0598315,RM100000002B3MJ,

PROCEDURE

1.CHECK CONNECTION OF CONNECTORS

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

Check that the connectors are properly connected to the airbag sensor with ECU assembly and front airbag sensor RH. Also check that the connectors that link the engine room main wire and instrument panel wire are properly connected.

OK:: The connectors are properly connected.

Result:

Proceed to
OK
NG

2.CHECK CONNECTORS

CONNECT CONNECTORS PROPERLY

2.CHECK CONNECTORS

Disconnect the connectors from the airbag sensor with ECU assembly and front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire.

Check that the terminals of the connectors are not deformed or damaged.

OK:: The terminals are not deformed or damaged.

Result:

Proceed to
OK
NG

3.CHECK FRONT AIRBAG SENSOR RH CIRCUIT

REPLACE INSTRUMENT PANEL WIRE OR ENGINE ROOM MAIN WIRE

3.CHECK FRONT AIRBAG SENSOR RH CIRCUIT

0.865,0.833 1.219,1.073 0.354,0.24 0.51,3.729 0.865,3.969 0.354,0.24 1.635,1.729 1.635,1.604 false 1.229,1.635 1.594,1.281 false 2.01,1.646 1.688,1.281 false 0.969,4.313 1.26,3.906 false 1.729,4.313 1.427,3.906 false 1.167,2.573 1.167,2.198 1.167,2.198 1,2.198 false 1.792,3.042 1.792,2.708 false 0.292,2.552 0.688,2.969 0.396,0.417 10 false *1 2.729,2.563 3.125,2.865 0.396,0.302 10 false *2 1.563,1.74 1.927,2 0.365,0.26 10 false *5 0.656,0.188 1.021,0.51 0.365,0.323 10 false *a 0.354,3.375 0.74,3.781 0.385,0.406 10 false *b 2.354,2.563 2.75,2.865 0.396,0.302 10 false A 1.979,2.563 2.375,2.865 0.396,0.302 10 false B 1.51,2.563 1.906,2.865 0.396,0.302 10 false C 1.354,2.563 1.75,2.865 0.396,0.302 10 false D 0.896,2.563 1.292,2.865 0.396,0.302 10 false E 0.531,2.563 0.927,2.865 0.396,0.302 10 false F 0.938,0.865 1.302,1.188 0.365,0.323 10 false I47 1.875,1.646 2.333,1.927 0.458,0.281 10 false +SR 1.094,1.646 1.552,1.927 0.458,0.281 10 false -SR 0.573,3.771 0.938,4.094 0.365,0.323 10 false A40 0.833,4.323 1.292,4.604 0.458,0.281 10 false -SR 1.594,4.323 2.052,4.604 0.458,0.281 10 false +SR 0.833,2.125 1.229,2.542 0.396,0.417 10 false *3 1.729,3.063 2.125,3.479 0.396,0.417 10 false *4

*1	Front Airbag Sensor RH
*2	Airbag Sensor with ECU Assembly
*3	Engine Room Main Wire
*4	Instrument Panel Wire
*5	Service Wire
*a	Front view of wire harness connector (to Airbag Sensor with ECU Assembly)
*b	Front view of wire harness connector (to Front Airbag Sensor RH)

Connect the connectors that link the engine room main wire and instrument panel wire.

Connect the cable to the negative (-) battery terminal.

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
A40-2 (+SR) - Body ground	Ignition switch ON	Below 1 V
A40-1 (-SR) - Body ground	Ignition switch ON	Below 1 V

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

Using a service wire, connect terminals 29 (+SR) and 28 (-SR) of connector B.

NOTICE:: Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A40-2 (+SR) - A40-1 (-SR)	Always	Below 1 Ω

Disconnect the service wire from connector B.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A40-2 (+SR) - A40-1 (-SR)	Always	1 MΩ or higher
A40-2 (+SR) - Body ground	Always	1 MΩ or higher
A40-1 (-SR) - Body ground	Always	1 MΩ or higher

Result:

Proceed to
OK
NG

4.CHECK FRONT AIRBAG SENSOR RH

5.CHECK INSTRUMENT PANEL WIRE

4.CHECK FRONT AIRBAG SENSOR RH

2.083,1.01 2.448,1.5 0.365,0.49 10 A 1.927,1.01 2.427,1.479 0.5,0.469 10 B 1.583,1.01 1.969,1.521 0.385,0.51 10 C 1.427,1.01 1.844,1.583 0.417,0.573 10 D 1.083,1.01 1.531,1.667 0.448,0.656 10 E 0.938,1.01 1.521,1.75 0.583,0.74 10 F 0.563,1.021 1.125,1.594 0.563,0.573 10 *1 2.542,1.031 2.885,1.563 0.344,0.531 10 *2

*1	Front Airbag Sensor LH
*2	Airbag Sensor with ECU Assembly

Connect the connector to the airbag sensor with ECU assembly.

Interchange the front airbag sensor RH with LH and connect the connectors.

Connect the cable to the negative (-) battery terminal.

Turn the ignition switch to ON, and wait for at least 60 seconds.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs: 50002 188

Turn the ignition switch off.

Turn the ignition switch to ON, and wait for at least 60 seconds.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes: 50001 188

HINT:: Codes other than DTCs B1612, B1613, B1617 and B1618 may be output at this time, but they are not related to this check.

Result:

Result	Proceed to
DTCs B1612, B1613, B1617 and B1618 are not output.	A
DTC B1617 or B1618 is output.	B
DTC B1612 or B1613 is output.	C

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

Return the front airbag sensor RH and LH to their original positions and connect the connectors.

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201906,999999,_V1,_080724,_0393250,RM100000001HWSQ,

REPLACE FRONT AIRBAG SENSOR RH

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>FRONT AIRBAG SENSOR>REMOVAL202307,999999,_58,_080741,_0392910,RM100000002CNIC,

REPLACE AIRBAG SENSOR WITH ECU ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL202307,999999,_58,_080741,_0392909,RM100000002CWN2,

5.CHECK INSTRUMENT PANEL WIRE

0.854,0.833 1.208,1.063 0.354,0.229 0.875,3.74 1.24,3.979 0.365,0.24 1.635,1.719 1.635,1.604 false 1.292,1.646 1.604,1.271 false 1.99,1.646 1.688,1.271 false 1.688,2.156 1.854,2.156 1.854,2.156 1.854,2.573 false 1.094,3.042 1.094,2.708 false 1.594,3.938 1.177,4.271 false 2.271,4.292 1.792,3.917 false 0.302,2.563 0.667,2.833 0.365,0.271 10 false *1 2.729,2.563 3.156,2.906 0.427,0.344 10 false *2 1.563,1.729 1.938,1.979 0.375,0.25 10 false *5 1.021,3.052 1.417,3.323 0.396,0.271 10 false *3 1.531,2.083 1.948,2.396 0.417,0.313 10 false *4 0.646,0.177 1.042,0.563 0.396,0.385 10 false *a 0.792,3.417 1.167,3.813 0.375,0.396 10 false *b 2.354,2.563 2.781,2.906 0.427,0.344 10 false A 2.052,2.563 2.479,2.906 0.427,0.344 10 false B 1.583,2.563 2.01,2.906 0.427,0.344 10 false C 1.292,2.563 1.719,2.906 0.427,0.344 10 false D 0.823,2.563 1.25,2.906 0.427,0.344 10 false E 0.521,2.563 0.948,2.906 0.427,0.344 10 false F 0.948,0.865 1.344,1.25 0.396,0.385 10 false I47 1.854,1.646 2.25,2.031 0.396,0.385 10 false +SR 1.146,1.646 1.542,2.031 0.396,0.385 10 false -SR 1,4.281 1.385,4.563 0.385,0.281 10 false +SR 0.958,3.781 1.354,4.167 0.396,0.385 10 false AI4 2.156,4.281 2.573,4.563 0.417,0.281 10 false -SR

*1	Front Airbag Sensor RH
*2	Airbag Sensor with ECU Assembly
*3	Engine Room Main Wire
*4	Instrument Panel Wire
*5	Service Wire
*a	Front view of wire harness connector (to Airbag Sensor with ECU Assembly)
*b	Front view of wire harness connector (to Engine Room Main Wire)

Disconnect the instrument panel wire connector from the engine room main wire.

Connect the cable to the negative (-) battery terminal.

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
AI4-4 (+SR) - Body ground	Ignition switch ON	Below 1 V
AI4-3 (-SR) - Body ground	Ignition switch ON	Below 1 V

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal.

CAUTION:: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

Using a service wire, connect terminals 29 (+SR) and 28 (-SR) of connector B.

NOTICE:: Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
AI4-4 (+SR) - AI4-3 (-SR)	Always	Below 1 Ω

Disconnect the service wire from connector B.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
AI4-4 (+SR) - AI4-3 (-SR)	Always	1 MΩ or higher
AI4-4 (+SR) - Body ground	Always	1 MΩ or higher
AI4-3 (-SR) - Body ground	Always	1 MΩ or higher

Result:

Proceed to
OK
NG

REPLACE ENGINE ROOM MAIN WIRE

REPLACE INSTRUMENT PANEL WIRE