RM3660EC _57 Power Source / Network _080743 NETWORKING _0598517 CAN COMMUNICATION SYSTEM(for Gasoline Model (NR Series)) J

NETWORKING CAN COMMUNICATION SYSTEM(for Gasoline Model (NR Series)) Center Airbag Sensor Communication Stop Mode

DESCRIPTION

Detection Item	Symptom	Trouble Area
Center Airbag Sensor Communication Stop Mode	Any of the following conditions are met: · Communication stop for "Airbag" is indicated on the "Communication Bus Check" screen of the GTS. Click here(202304,999999,_57,_080743,_0598517,RM100000002B6UY,) · Communication stop history for "Airbag" is indicated on the "Communication Bus Check (Detail)" screen of the GTS. (The Lost Communication Time value for "Airbag" is 6 or more.) Click here(202304,999999,_57,_080743,_0598517,RM100000002B6UY,) · Communication system DTCs (DTCs that start with U) that correspond to "Center Airbag Sensor Communication Stop Mode" in "DTC Combination Table" are output. Click here(202304,202403,_57,_080743,_0598517,RM100000002B6V1,202403,999999,_57,_080743,_0598517,RM100000002JOVB,)	· Airbag sensor with ECU assembly main line or connector · Power source circuit of airbag sensor with ECU assembly · Airbag sensor with ECU assembly ground circuit · Airbag sensor with ECU assembly

WIRING DIAGRAM

0.563,1.813 3.469,2.01 2.906,0.198 10 false No. 5 CAN Junction Connector 0.302,1.813 0.698,2.01 0.396,0.198 10 false I96 5.656,0.76 6.115,0.99 0.458,0.229 10 false CANH 5.344,0.781 5.74,0.979 0.396,0.198 10 false 26 5.344,1.365 5.74,1.563 0.396,0.198 10 false 27 3.844,2.198 4.719,2.375 0.875,0.177 10 false A/BAG-IG2 5.354,2.229 5.75,2.427 0.396,0.198 10 false 36 1.667,2.323 3.333,2.583 1.667,0.26 10 false from IG2-NO. 2 Relay 5.635,2.354 6.031,2.552 0.396,0.198 10 false IG2 5.677,3.375 6.073,3.573 0.396,0.198 10 false E1 5.667,4.115 6.063,4.313 0.396,0.198 10 false E2 5.365,3.979 5.76,4.177 0.396,0.198 10 false 32 5.354,3.25 5.75,3.448 0.396,0.198 10 false 33 5.667,1.615 6.156,1.833 0.49,0.219 10 false CANL 5.229,4.781 5.625,4.979 0.396,0.198 10 false I47 5.49,4.781 7.01,5.281 1.521,0.5 10 false Airbag Sensor with ECU Assembly 1.781,0.75 2.177,0.948 0.396,0.198 10 false 3 1.802,1.302 2.198,1.5 0.396,0.198 10 false 9

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 (for Gasoline Model (NR Series))>HOW TO PROCEED WITH TROUBLESHOOTING202304,999999,_57,_080743,_0598517,RM100000002B6UW,

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 (-) auxiliary 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,

When disconnecting and reconnecting the battery.

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,

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

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE202304,202307,_V1,_143216,_0598316,RM100000002B3MM,202307,202502,_V1,_143216,_0598316,RM100000002CVSW,202502,999999,_V1,_143216,_0598316,RM100000002ROZH,

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 (for Gasoline Model (NR Series))>DIAGNOSIS SYSTEM202304,202307,_57,_080743,_0598517,RM100000002B6V0,202307,202403,_57,_080743,_0598517,RM100000002D3A3,202403,202502,_57,_080743,_0598517,RM100000002JOVA,202502,999999,_57,_080743,_0598517,RM100000002RPYX,

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

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 LINES (AIRBAG SENSOR WITH ECU ASSEMBLY MAIN LINE)

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

Disconnect the I47 airbag sensor with ECU assembly connector.

1.5,0.583 1.917,0.833 0.417,0.25 1.927,3.052 2.094,3.052 2.094,3.052 2.094,2.219 true 2.365,3.052 2.198,3.052 2.198,3.052 2.198,2.219 true 0.146,0.094 0.458,0.292 0.313,0.198 10 false *a 1.469,2.979 1.938,3.219 0.469,0.24 10 false CANH 2.448,2.958 2.917,3.198 0.469,0.24 10 false CANL 1.625,0.635 1.938,0.833 0.313,0.198 10 false I47

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I47-26 (CANH) - I47-27 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

Result:

Result
OK
NG

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (AIRBAG SENSOR WITH ECU ASSEMBLY)

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

1.5,0.583 1.917,0.833 0.417,0.25 1.573,3.042 1.74,3.042 1.74,3.042 1.74,2.542 true 1.698,3.229 1.865,3.229 1.865,3.229 1.865,2.563 true 2.365,3.042 2.198,3.042 2.198,3.042 2.198,2.542 true 0.146,0.094 0.458,0.292 0.313,0.198 10 false *a 1.344,2.969 1.813,3.208 0.469,0.24 10 false E2 2.438,2.958 2.906,3.198 0.469,0.24 10 false IG2 1.625,0.635 1.938,0.833 0.313,0.198 10 false I47 1.479,3.156 1.948,3.396 0.469,0.24 10 false E1

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I47-32 (E2) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω
I47-33 (E1) - Body ground	Cable disconnected from negative (-) battery terminal	Below 1 Ω

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

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
I47-36 (IG2) - Body ground	Ignition switch ON	11 to 14 V

Result:

Result
OK
NG

REPLACE AIRBAG SENSOR WITH ECU ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL202304,202307,_58,_080741,_0392909,RM100000002B7V6,202307,999999,_58,_080741,_0392909,RM100000002CWN2,

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)