RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0396679 AIRBAG SYSTEM(for Type C) J

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for Type C)  SRS Warning Light does not Come 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 engine switch is turned from off to on (IG), 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

C400980
5.563,3.75 7.125,4.052 1.563,0.302 10 false Airbag Sensor Assembly 2.677,3.615 4.771,3.896 2.094,0.281 10 false Combination Meter Assembly 2.104,1.417 2.854,1.635 0.75,0.219 10 false METER-IG2 0.052,1.26 1.51,1.479 1.458,0.219 10 false from IG2-NO.2 Relay*1 2.969,0.573 4.479,0.927 1.51,0.354 10 false from IG2-NO.2 Relay 0.677,1.781 2.094,2.01 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 2.25,1.969 2.917,2.156 0.667,0.188 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 5.583,3.573 5.99,3.76 0.406,0.188 10 false N45 3.135,1.833 3.438,2.021 0.302,0.188 10 false B 0.156,0.677 1.552,1.021 1.396,0.344 10 false from Engine Stop and Start ECU*2 3.24,4.083 5.281,4.292 2.042,0.208 10 false *1: w/o Stop and Start System 3.24,4.406 5.281,4.615 2.042,0.208 10 false *2: w/ Stop and Start System

CAUTION / NOTICE / HINT

NOTICE:
·

After the engine 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 BATTERY

·

When disconnecting and reconnecting the battery

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE

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 CHART


·

After replacing the airbag sensor assembly, refer to initialization.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE

·

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 BATTERY
a.

Measure the battery voltage.

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



OK

2.CHECK CONNECTOR

NG

REPLACE OR RECHARGE BATTERY

2.CHECK CONNECTOR
a.

Turn the engine switch off.


b.

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


c.

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.



d.

Disconnect the connector from the combination meter assembly.


e.

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



OK

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

NG

REPAIR OR REPLACE CONNECTOR

3.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND)
a.
C406366C31
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 1.917,0.302 0.344,0.188 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 0.083,1.833 0.385,2.021 0.302,0.188 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.


b.

Turn the engine switch on (IG).


c.

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

Standard Voltage:
w/o Stop and Start System
Tester Connection Condition Specified Condition
N22-38 (IG+) - Body ground Engine switch on (IG) 11 to 14 V
N22-22 (B) - Body ground Always 11 to 14 V

w/ Stop and Start System
Tester Connection Condition Specified Condition
N22-38 (IG+) - Body ground Engine switch on (IG) 10.5 to 16 V
N22-22 (B) - Body ground Always 11 to 14 V



d.

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



OK

4.CHECK SRS WARNING LIGHT

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK SRS WARNING LIGHT
a.

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


b.

Connect the connector to the combination meter assembly.


c.

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


d.

Turn the engine switch on (IG) 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 engine switch is turned on (IG).



Result:
Proceed to
OK
NG



OK

REPLACE AIRBAG SENSOR ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL


NG

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL