RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0385034 AIRBAG SYSTEM(for Type B) J

SUPPLEMENTAL RESTRAINT SYSTEMS AIRBAG SYSTEM(for Type B) SRS Warning Light Remains ON

DESCRIPTION

The SRS warning light is located in the combination meter assembly.

When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the ignition switch is turned from off to ON, and then goes off automatically.

If there is a malfunction in the SRS, the SRS warning light comes on to inform the driver of a problem.

When terminals TC and CG of the DLC3 are connected, DTCs are output by the blinking of the SRS warning light.

The SRS is equipped with a voltage-increase circuit (DC-DC converter) in the airbag sensor assembly in case the source voltage drops.

When the battery voltage drops, the voltage-increase circuit (DC-DC converter) functions to increase the voltage of the SRS to normal voltage.

A malfunction in this circuit is not recorded in the airbag sensor assembly. The SRS warning light automatically goes off when the source voltage returns to normal.

The signal to illuminate the SRS warning light is transmitted from the airbag sensor assembly to the combination meter assembly through the CAN communication system.

WIRING DIAGRAM

5.625,3.75 7.146,4.063 1.521,0.313 10 false Airbag Sensor Assembly 2.677,3.625 4.771,3.906 2.094,0.281 10 false Combination Meter Assembly 2.969,0.573 4.479,0.927 1.51,0.354 10 false from IG2-NO.2 Relay 0.688,1.802 2.104,2.031 1.417,0.229 10 false from Battery 0.792,4.188 3.563,4.417 2.771,0.229 10 false : CAN Communication Line 4.927,0.76 5.792,1.125 0.865,0.365 10 false A/BAG-IG2 2.24,1.979 3.344,2.448 1.104,0.469 10 false METER 2.698,3.448 3.083,3.635 0.385,0.188 10 false N22 3.146,1.271 3.531,1.458 0.385,0.188 10 false IG+ 6.083,0.604 6.469,0.792 0.385,0.188 10 false IG2 2.875,1.146 3.177,1.333 0.302,0.188 10 false 38 2.844,1.688 3.104,1.896 0.26,0.208 10 false 22 2.823,2.26 3.125,2.448 0.302,0.188 10 false 23 5.792,2.771 6.094,2.958 0.302,0.188 10 false 32 5.792,2.26 6.094,2.448 0.302,0.188 10 false 33 5.781,0.5 6.083,0.688 0.302,0.188 10 false 36 6.083,2.375 6.385,2.563 0.302,0.188 10 false E1 6.073,2.896 6.375,3.083 0.302,0.188 10 false E2 3.135,2.375 3.438,2.563 0.302,0.188 10 false ET 5.635,3.573 6.042,3.76 0.406,0.188 10 false N45 3.135,1.833 3.438,2.021 0.302,0.188 10 false B 0.135,1.26 1.531,1.604 1.396,0.344 10 false from Engine Stop and Start ECU

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,

Inspect the fuses for circuits related to this system before performing the following procedure.

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.CHECK SRS WARNING LIGHT OPERATION

Turn the ignition switch to ON and check the SRS warning light condition.

HINT:: The primary check is performed for approximately 6 seconds after the ignition switch is turned to ON.

Result:

Result	Proceed to
After the primary check period, the SRS warning light remains on.	A
After the primary check period, the SRS warning light goes off and comes on again.	B

2.CHECK BATTERY

6.CHECK CAN COMMUNICATION SYSTEM

2.CHECK BATTERY

Measure the battery voltage with the ignition switch off.

Standard voltage:: 11 to 14 V

HINT:: It may be possible to tell whether the battery is discharged by operating the horn.; If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

Result:

Proceed to
OK
NG

3.CHECK CONNECTOR

REPLACE OR RECHARGE BATTERY

3.CHECK CONNECTOR

Turn the ignition switch off.

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

Check that the connector is properly connected to the airbag sensor assembly.

OK:: The connector is properly connected.

HINT:: If the connector is not properly connected, reconnect the connector and proceed to the next inspection.

Disconnect the connector from the airbag sensor assembly.

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

OK:: The terminals are not deformed or damaged.

Result:

Proceed to
OK
NG

4.CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - BATTERY AND BODY GROUND)

REPLACE INSTRUMENT PANEL WIRE

4.CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - BATTERY AND BODY GROUND)

0.302,0.948 0.677,1.177 0.375,0.229 2.094,1.906 1.844,1.906 1.844,1.906 1.906,1.417 true 1.135,1.896 1.302,1.896 1.302,1.896 1.792,1.406 true 2.729,1.75 2.573,1.75 2.573,1.75 2.229,1.396 true 0.167,0.135 0.427,0.354 0.26,0.219 10 false *a 0.365,0.979 0.688,1.198 0.323,0.219 10 false N45 2.833,1.667 3.167,1.865 0.333,0.198 10 false IG2 2.188,1.823 2.469,2 0.281,0.177 10 false E1 0.906,1.823 1.26,2.021 0.354,0.198 10 false E2

*a	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.

Operate all components of the electrical systems (defogger, wipers, headlights, heater blower, etc.).

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
N45-36 (IG2) - Body ground	Ignition switch ON	8 to 16 V

Turn the ignition switch off.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
N45-33 (E1) - Body ground	Always	Below 1 Ω
N45-32 (E2) - Body ground	Always	Below 1 Ω

Result:

Proceed to
OK
NG

5.CHECK SRS WARNING LIGHT (SHORT TO GROUND)

REPLACE INSTRUMENT PANEL WIRE

5.CHECK SRS WARNING LIGHT (SHORT TO GROUND)

Turn the ignition switch to ON and check the SRS warning light condition.

OK:: After the primary check period, the SRS warning light turns off for approximately 10 seconds and then turns back on.

HINT:: The primary check period is approximately 6 seconds after the ignition switch is turned to ON.

Result:

Proceed to
OK
NG

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,

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL201902,201906,_58,_078337,_0380006,RM100000001FR91,201906,999999,_58,_078337,_0380006,RM100000001IHHE,

6.CHECK CAN COMMUNICATION SYSTEM

Check if a CAN communication DTC is output.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>DIAGNOSIS SYSTEM201902,201906,_57,_078518,_0381088,RM100000001G6R5,201906,202005,_57,_078518,_0381088,RM100000001IUWS,202005,202107,_57,_078518,_0381088,RM100000001M0XB,202107,202208,_57,_078518,_0381088,RM100000001X4LL,202208,999999,_57,_078518,_0381088,RM10000000257V5,

Result:

Proceed to
DTCs are output
DTC is not output

DTCs are output

GO TO CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING201902,201906,_57,_078518,_0381088,RM100000001GYCO,201906,999999,_57,_078518,_0381088,RM100000001WPQJ,

DTC is not output

7.CHECK BATTERY

Measure the battery voltage with the ignition switch off.

Standard voltage:: 11 to 14 V

HINT:: It may be possible to tell whether the battery is discharged by operating the horn.; If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

Result:

Proceed to
OK
NG

8.CHECK CONNECTOR

REPLACE OR RECHARGE BATTERY

8.CHECK CONNECTOR

Turn the ignition switch off.

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

Check that the connector is properly connected to the airbag sensor assembly.

OK:: The connector is properly connected.

HINT:: If the connector is not properly connected, reconnect the connector and proceed to the next inspection.

Disconnect the connector from the airbag sensor assembly.

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

OK:: The terminals are not deformed or damaged.

Result:

Proceed to
OK
NG

9.CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - BATTERY AND BODY GROUND)

REPLACE INSTRUMENT PANEL WIRE

9.CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - BATTERY AND BODY GROUND)

*a	Front view of wire harness connector (to Airbag Sensor Assembly)

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

Turn the ignition switch to ON.

Operate all components of the electrical systems (defogger, wipers, headlights, heater blower, etc.).

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
N45-36 (IG2) - Body ground	Ignition switch ON	8 to 16 V

Turn the ignition switch off.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
N45-33 (E1) - Body ground	Always	Below 1 Ω
N45-32 (E2) - Body ground	Always	Below 1 Ω

Result:

Proceed to
OK
NG

10.CHECK CONNECTOR

REPLACE INSTRUMENT PANEL WIRE

10.CHECK CONNECTOR

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

Check that the connector is properly connected to the combination meter assembly.

OK:: The connector is properly connected.

HINT:: If the connector is not properly connected, reconnect the connector and proceed to the next inspection.

Disconnect the connector from the combination meter assembly.

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

OK:: The terminals are not deformed or damaged.

Result:

Proceed to
OK
NG

11.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND)

REPAIR OR REPLACE CONNECTOR

11.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND)

1.5,0.073 1.885,0.333 0.385,0.26 2.75,1.833 2.917,1.833 2.917,1.833 2.781,1.385 true 2.75,1.167 2.917,0.333 2.917,0.333 3.083,0.333 true 0.646,1.375 0.5,1.917 0.5,1.917 0.333,1.917 true 0.115,0.083 0.427,0.24 0.313,0.156 10 false *a 1.573,0.115 1.885,0.271 0.313,0.156 10 false N22 2.448,1.75 2.75,1.99 0.302,0.24 10 false IG+ 3.167,0.25 3.417,0.51 0.25,0.26 10 false B 0.115,1.833 0.417,2.167 0.302,0.333 10 false ET

*a	Front view of wire harness connector (to Combination Meter 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	Condition	Specified Condition
N22-38 (IG+) - Body ground	Ignition switch ON	10.5 to 16 V
N22-22 (B) - Body ground	Always	11 to 14 V

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
N22-23 (ET) - Body ground	Always	Below 1 Ω

Result:

Proceed to
OK
NG

12.CHECK SRS WARNING LIGHT

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.CHECK SRS WARNING LIGHT

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

Connect the connector to the combination meter assembly.

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

Turn the ignition switch to ON and check the SRS warning light condition.

OK:: After the primary check period, the SRS warning light turns off for approximately 10 seconds and then turns back on.

HINT:: The primary check period is approximately 6 seconds after the ignition switch is turned to ON.

Result:

Proceed to
OK
NG

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,

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL201902,201906,_58,_078337,_0380006,RM100000001FR91,201906,999999,_58,_078337,_0380006,RM100000001IHHE,