RM35X0E _57 Power Source / Network _078518 NETWORKING _0381088 CAN COMMUNICATION SYSTEM J

NETWORKING  CAN COMMUNICATION SYSTEM  Center Airbag Sensor Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
Center Airbag Sensor Communication Stop Mode Communication stop for "Airbag" is indicated on the "Communication Bus Check" screen of the GTS.
(Click here)
·

Airbag sensor assembly main wire or connector

·

Power source circuit of airbag sensor assembly

·

Airbag sensor assembly ground circuit

·

Airbag sensor assembly



WIRING DIAGRAM

C491455
5.625,3.365 5.938,3.563 0.313,0.198 10 false E1 5.615,4.115 5.927,4.313 0.313,0.198 10 false E2 5.604,2.365 5.917,2.563 0.313,0.198 10 false IG2 5.594,0.792 6.042,0.99 0.448,0.198 10 false CANH 5.594,1.604 6.042,1.802 0.448,0.198 10 false CANL 5.344,0.771 5.656,0.969 0.313,0.198 10 false 26 5.333,1.354 5.646,1.552 0.313,0.198 10 false 27 5.354,2.219 5.667,2.417 0.313,0.198 10 false 36 5.365,3.25 5.677,3.448 0.313,0.198 10 false 33 5.375,3.979 5.688,4.177 0.313,0.198 10 false 32 3.906,2.188 4.729,2.438 0.823,0.25 10 false A/BAG-IG2 5.281,4.896 7.01,5.208 1.729,0.313 10 false Airbag Sensor Assembly 5.302,4.74 5.833,4.969 0.531,0.229 10 false N45 1.698,0.896 2.229,1.125 0.531,0.229 10 false N219 0.188,1.865 2.427,2.188 2.24,0.323 10 false No. 5 CAN Junction Connector 1.76,0.667 2.073,0.865 0.313,0.198 10 false 2*1 1.698,2.333 3.469,3.135 1.771,0.802 10 false from IG2-NO.2 Relay 2.188,0.896 2.719,1.125 0.531,0.229 10 false N221 2.188,0.656 2.552,0.854 0.365,0.198 10 false 10*2 1.688,1.49 2.219,1.719 0.531,0.229 10 false N219 2.188,1.49 2.719,1.719 0.531,0.229 10 false N221 1.719,1.26 2.052,1.438 0.333,0.177 10 false 13*1 2.219,1.25 2.583,1.448 0.365,0.198 10 false 21*2 0.156,4.708 1.604,4.948 1.448,0.24 10 false *1: for Wagon 0.146,5.177 1.594,5.417 1.448,0.24 10 false *2: except Wagon

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


NOTICE:
·

Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING

·

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

·

Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 10 minutes or more before measuring the resistance.

·

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 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


·

Some parts must be initialized and set when replacing or removing and installing parts.

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

·

After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

·

After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>DIAGNOSIS SYSTEM



HINT:
·

Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.

·

When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.



PROCEDURE

1.CHECK FOR OPEN IN CAN BUS WIRE (AIRBAG SENSOR ASSEMBLY MAIN WIRE)
a.

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


b.
B532758C03
1.479,0.135 1.917,0.458 0.438,0.323 2.052,1.344 2.479,0.49 2.479,0.49 2.656,0.49 true 2.156,1.396 2.531,1.813 2.531,1.813 2.708,1.813 true 1.552,0.208 2.01,0.406 0.458,0.198 10 false N45 0.156,0.115 0.615,0.313 0.458,0.198 10 false *a 2.698,0.406 3.156,0.604 0.458,0.198 10 false CANH 2.771,1.729 3.229,1.927 0.458,0.198 10 false CANL
*a Front view of wire harness connector
(to Airbag Sensor Assembly)


Disconnect the N45 airbag sensor assembly connector.

for Type A: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>PRECAUTION

for Type B: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>PRECAUTION

for Type C: Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>PRECAUTION


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N45-26 (CANH) - N45-27 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPLACE CAN MAIN WIRE AND CONNECTOR

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
B532758C04
1.479,0.135 1.917,0.458 0.438,0.323 1.833,1.583 2.531,0.906 2.531,0.906 2.708,0.906 true 0.719,1.073 0.948,1.073 0.948,1.073 1.75,1.615 true 2.146,1.635 2.635,1.313 2.635,1.313 2.813,1.313 true 1.563,0.219 2.021,0.417 0.458,0.198 10 false N45 0.156,0.115 0.615,0.313 0.458,0.198 10 false *a 2.75,0.833 3.208,1.031 0.458,0.198 10 false E1 0.5,1.01 0.958,1.208 0.458,0.198 10 false E2 2.865,1.24 3.323,1.438 0.458,0.198 10 false IG2
*a Front view of wire harness connector
(to Airbag Sensor Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
N45-32 (E2) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω
N45-33 (E1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω



b.

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


c.

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 11 to 14 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE AIRBAG SENSOR ASSEMBLY

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


NG

REPLACE HARNESS AND CONNECTOR