RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0387732 AIRBAG SYSTEM(for Type A) C

SUPPLEMENTAL RESTRAINT SYSTEMS AIRBAG SYSTEM(for Type A) B163B Side Airbag Sensor Assembly No.2 Lost Communication (LH) B163C Side Airbag Sensor Assembly No.2 Initialization Error (LH)

DESCRIPTION

The side collision sensor LH circuit consists of the airbag sensor assembly and No. 1 side airbag sensor LH.

The No. 1 side airbag sensor LH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the SRS should be deployed.

These DTCs are stored when a malfunction is detected in the side collision sensor LH circuit.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B163B	Side Airbag Sensor Assembly No.2 Lost Communication (LH)	One of the following conditions is met: · The airbag sensor assembly detects a line short, short to ground or B+, or an open in the side collision sensor LH circuit. · A No. 1 side airbag sensor LH malfunction. · An airbag sensor assembly malfunction.	· Floor wire · No. 1 side airbag sensor LH · Airbag sensor assembly	Comes on	Not applicable
B163C	Side Airbag Sensor Assembly No.2 Initialization Error (LH)	One of the following conditions is met: · The airbag sensor assembly detects a line short, short to ground or B+, or an open in the side collision sensor LH circuit. · A No. 1 side airbag sensor LH malfunction. · An airbag sensor assembly malfunction.	· Floor wire · No. 1 side airbag sensor LH · Airbag sensor assembly	Comes on	Not applicable

WIRING DIAGRAM

1.26,2.083 1.719,2.24 0.458,0.156 10 false BFL- 1.24,0.906 1.698,1.063 0.458,0.156 10 false BFL+ 1.75,0.802 1.958,0.979 0.208,0.177 10 false 4 1.719,1.979 1.927,2.125 0.208,0.146 10 false 3 0.333,2.802 0.656,2.99 0.323,0.188 10 false V6 0.313,2.958 3.24,3.281 2.927,0.323 10 false No. 1 Side Airbag Sensor LH 5.323,0.802 5.615,0.99 0.292,0.188 10 false 29 5.333,1.969 5.583,2.156 0.25,0.188 10 false 30 5.615,0.917 6.115,1.083 0.5,0.167 10 false BCL+ 5.615,2.083 6.104,2.26 0.49,0.177 10 false BCL- 5.49,2.781 6.26,3.052 0.771,0.271 10 false V1 5.5,2.927 7.125,3.302 1.625,0.375 10 false Airbag Sensor Assembly

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 BATTERY201902,999999,_V1,_081196,_0393338,RM100000001HX6Q,

When disconnecting and reconnecting the battery

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE201902,201906,_V1,_081196,_0393338,RM100000001HX6R,201906,999999,_V1,_081196,_0393338,RM100000001JBY9,

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 CHART201902,201906,_V1,_081196,_0393338,RM100000001HX6S,201906,999999,_V1,_081196,_0393338,RM100000001IWEY,

After replacing the airbag sensor assembly, refer to initialization.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE201902,201906,_V1,_081196,_0393339,RM100000001HX6U,201906,202005,_V1,_081196,_0393339,RM100000001IWEZ,202005,202107,_V1,_081196,_0393339,RM100000001M43S,202107,202208,_V1,_081196,_0393339,RM100000001WMAF,202208,999999,_V1,_081196,_0393339,RM1000000024IQN,

PROCEDURE

1.CHECK CONNECTION OF CONNECTORS

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Check that the connectors are properly connected to the airbag sensor assembly and No. 1 side airbag sensor LH.

Result:

Proceed to
The connectors are properly connected
The connectors are not properly connected

The connectors are properly connected

2.CHECK CONNECTORS

The connectors are not properly connected

CONNECT CONNECTORS PROPERLY

2.CHECK CONNECTORS

Disconnect the connectors from the airbag sensor assembly and No. 1 side airbag sensor LH.

2.594,1.781 2.906,1.979 0.313,0.198 10 false *2 0.646,1.344 0.958,1.542 0.313,0.198 10 false *1 1.521,0.604 1.833,0.802 0.313,0.198 10 false *3

*1	No. 1 Side Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Floor Wire

Check that the connectors (on the airbag sensor assembly side and No. 1 side airbag sensor LH side) are not damaged.

Result:

Proceed to
The connectors are not deformed or damaged
The connectors are deformed or damaged

The connectors are not deformed or damaged

3.CHECK FLOOR WIRE

The connectors are deformed or damaged

REPLACE FLOOR WIRE

3.CHECK FLOOR WIRE

0.948,3.458 1.438,3.698 0.49,0.24 2.563,0.604 2.927,0.833 0.365,0.229 1.406,1.25 1.583,1.25 1.583,1.25 1.875,0.781 true 2.479,1.219 2.292,1.219 2.292,1.219 2.094,0.771 true 2.667,3.75 2.5,3.75 2.5,3.75 2.115,3.948 true 2.667,3.417 2.5,3.417 2.5,3.417 2.031,3.948 true 2.5,4.333 2.333,4.333 2.333,4.333 2.188,4.281 true 0.438,2.365 0.75,2.521 0.313,0.156 10 false *1 2.688,1.594 3,1.75 0.313,0.156 10 false *2 1.5,2.073 1.813,2.229 0.313,0.156 10 false *3 2.583,4.26 2.896,4.417 0.313,0.156 10 false *4 0.771,0.24 1.083,0.396 0.313,0.156 10 false *a 0.969,2.99 1.281,3.146 0.313,0.156 10 false *b 1.073,3.5 1.385,3.656 0.313,0.156 10 false V1 2.635,0.635 2.948,0.792 0.313,0.156 10 false V6 2.281,1.885 2.594,2.042 0.313,0.156 10 false A 1.99,1.875 2.302,2.031 0.313,0.156 10 false B 1,1.875 1.313,2.031 0.313,0.156 10 false C 0.719,1.875 1.031,2.031 0.313,0.156 10 false D 2.552,1.135 2.979,1.344 0.427,0.208 10 false BFL+ 1.042,1.146 1.469,1.354 0.427,0.208 10 false BFL- 2.729,3.677 3.156,3.885 0.427,0.208 10 false BCL- 2.729,3.344 3.156,3.552 0.427,0.208 10 false BCL+

*1	No. 1 Side Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Floor Wire
*4	Service Wire
*a	Front view of wire harness connector (to No. 1 Side Airbag Sensor LH)
*b	Front view of wire harness connector (to Airbag Sensor Assembly)

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
V6-4 (BFL+) - Body ground	Ignition switch ON	Below 1 V
V6-3 (BFL-) - Body ground	Ignition switch ON	Below 1 V

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Using a service wire, connect terminals 29 (BCL+) and 30 (BCL-) of connector B.

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
V6-4 (BFL+) - V6-3 (BFL-)	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
V6-4 (BFL+) - V6-3 (BFL-)	Always	1 MΩ or higher
V6-4 (BFL+) - Body ground	Always	1 MΩ or higher
V6-3 (BFL-) - Body ground	Always	1 MΩ or higher

Result:

Proceed to
OK
NG

4.CHECK NO. 1 SIDE AIRBAG SENSOR LH

REPLACE FLOOR WIRE

4.CHECK NO. 1 SIDE AIRBAG SENSOR LH

Connect the connectors to the airbag sensor assembly.

0.875,0.938 1.188,1.135 0.313,0.198 10 false *1 2.406,1.313 2.719,1.51 0.313,0.198 10 false *2

*1	No. 1 Side Airbag Sensor RH
*2	Airbag Sensor Assembly

Interchange the No. 1 side airbag sensor LH with RH and connect the connectors to them.

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

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

Clear the DTCs stored in memory.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0387732,RM100000001H9LE,

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.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0387732,RM100000001H9LE,

Body Electrical > SRS Airbag > Trouble Codes: 50001 188

Result:

Proceed to
DTC B163B or B163C is output
DTC B162B or B162C is output
DTCs B162B, B162C, B163B and B163C are not output

HINT:: Codes other than DTC B162B, B162C, B163B and B163C may be output at this time, but they are not related to this check.

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Return the No. 1 side airbag sensor RH and LH to their original positions and connect the connectors to them.

DTC B163B or B163C is output

REPLACE AIRBAG SENSOR ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL201902,201906,_58,_079257,_0384942,RM100000001GJ8V,201906,999999,_58,_079257,_0384942,RM100000001IN22,

DTC B162B or B162C is output

REPLACE NO. 1 SIDE AIRBAG SENSOR LH

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>SIDE AIRBAG SENSOR (for Center Pillar)>REMOVAL201902,201906,_58,_079257,_0384945,RM100000001GJ98,201906,999999,_58,_079257,_0384945,RM100000001IIRP,

DTCs B162B, B162C, B163B and B163C are not output

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201902,999999,_V1,_078841,_0386803,RM100000001GTWY,