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

NETWORKING  CAN COMMUNICATION SYSTEM  Main Body ECU Communication Stop Mode  


DESCRIPTION

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

Main body ECU (multiplex network body ECU) branch wire or connector

·

Power source circuit of main body ECU (multiplex network body ECU) or instrument panel junction block assembly

·

Main body ECU (multiplex network body ECU) or instrument panel junction block assembly ground circuit

·

Main body ECU (multiplex network body ECU)

·

Instrument panel junction block assembly



WIRING DIAGRAM

except Wagon
C414465E03
0.125,1.458 0.583,1.656 0.458,0.198 10 false N221 0.135,1.625 2.198,1.927 2.063,0.302 10 false No. 5 CAN Junction Connector 1.583,0.438 2.625,0.635 1.042,0.198 10 false 2 1.542,1 2.344,1.292 0.802,0.292 10 false 13 5.448,0.542 5.906,0.74 0.458,0.198 10 false N19 5.5,0.313 5.99,0.51 0.49,0.198 10 false 5 5.51,0.917 6,1.115 0.49,0.198 10 false 4 5.833,0.552 6.292,0.75 0.458,0.198 10 false CANH 5.833,1.135 6.292,1.333 0.458,0.198 10 false CANL 2,2.25 2.833,2.5 0.833,0.25 10 false D/C CUT 2.75,2.417 3.583,2.667 0.833,0.25 10 false 3C 2.75,2.167 3.583,2.417 0.833,0.25 10 false 1 3.938,2.26 5.167,2.583 1.229,0.323 10 false ECU-B NO.1 5.5,3.365 5.958,3.583 0.458,0.219 10 false A 5.458,3.167 5.917,3.385 0.458,0.219 10 false 31 5.833,3.365 6.292,3.583 0.458,0.219 10 false BECU 5.542,4.031 6,4.25 0.458,0.219 10 false A 5.5,3.833 5.958,4.052 0.458,0.219 10 false 30 5.833,4.031 6.292,4.25 0.458,0.219 10 false ACC 4.51,3.885 5.292,4.156 0.781,0.271 10 false ECU-ACC 5.521,4.885 5.979,5.104 0.458,0.219 10 false A 5.5,4.667 5.958,4.885 0.458,0.219 10 false 32 5.844,4.885 6.302,5.104 0.458,0.219 10 false IG 5.844,7.146 6.302,7.365 0.458,0.219 10 false GND1 5.51,7.156 5.969,7.375 0.458,0.219 10 false A 5.479,6.906 5.938,7.125 0.458,0.219 10 false 11 2.781,7.135 3.615,7.385 0.833,0.25 10 false 3B 2.802,6.938 3.635,7.188 0.833,0.25 10 false 3 2.76,6.073 3.594,6.323 0.833,0.25 10 false 3A 2.771,5.313 3.604,5.563 0.833,0.25 10 false 3D 3.542,6.365 4.219,6.771 0.677,0.406 10 false IG1 NO.1 Relay 3.479,4.563 4.313,4.813 0.833,0.25 10 false ACC Relay 2.76,3.375 3.594,3.625 0.833,0.25 10 false 3B 2.729,3.656 3.563,3.906 0.833,0.25 10 false 1*4 2.76,3.865 3.594,4.115 0.833,0.25 10 false 3G 2.76,3.177 3.594,3.427 0.833,0.25 10 false 23 0.99,3.865 2.448,4.188 1.458,0.323 10 false from Battery 3.021,7.792 4.677,8.375 1.656,0.583 10 false Instrument Panel Junction Block Assembly 5.229,7.813 6.896,8.208 1.667,0.396 10 false Main Body ECU (Multiplex Network Body ECU) 4.438,5.698 5.594,5.979 1.156,0.281 10 false ECU-IG1 NO.1 0.583,4.313 1.885,4.625 1.302,0.313 10 false from Ignition Switch 0.792,2.344 2.25,2.667 1.458,0.323 10 false from Battery 5.458,1.135 5.917,1.333 0.458,0.198 10 false N19 2.76,2.885 3.594,3.135 0.833,0.25 10 false 3D 2.76,2.677 3.594,2.927 0.833,0.25 10 false 29 1.917,4.771 2.75,5.021 0.833,0.25 10 false *1 2.292,5.115 3.125,5.365 0.833,0.25 10 false *2 0.083,7.417 2.156,7.646 2.073,0.229 10 false *1: w/ Stop and Start System 0.083,7.76 2.438,8.094 2.354,0.333 10 false *2: w/o Stop and Start System 0.813,6.094 2.208,6.594 1.396,0.5 10 false from Ignition Switch 0.083,8.135 2.146,8.448 2.063,0.313 10 false *3: for LHD 0.083,8.469 2.146,8.781 2.063,0.313 10 false *4: for RHD 0.167,4.885 1.573,5.281 1.406,0.396 10 false from Engine Stop and Start ECU*1 2.76,4.313 3.594,4.563 0.833,0.25 10 false 3A 2.74,4.104 3.573,4.354 0.833,0.25 10 false 30 2.75,5.885 3.583,6.135 0.833,0.25 10 false 17 2.75,4.656 3.583,4.906 0.833,0.25 10 false 15 2.375,3.865 3.208,4.115 0.833,0.25 10 false 3E 2.354,3.656 3.188,3.906 0.833,0.25 10 false 1*3 2.771,4.875 3.604,5.125 0.833,0.25 10 false 3A 2.781,5.115 3.615,5.365 0.833,0.25 10 false 35

for Wagon
C414465E04
0.125,1.458 0.583,1.656 0.458,0.198 10 false N126 0.135,1.625 2.198,1.927 2.063,0.302 10 false No. 6 CAN Junction Connector 1.583,0.438 2.625,0.635 1.042,0.198 10 false 1 1.542,1 2.344,1.292 0.802,0.292 10 false 11 5.448,0.542 5.906,0.74 0.458,0.198 10 false N19 5.5,0.313 5.99,0.51 0.49,0.198 10 false 5 5.51,0.917 6,1.115 0.49,0.198 10 false 4 5.833,0.552 6.292,0.75 0.458,0.198 10 false CANH 5.833,1.135 6.292,1.333 0.458,0.198 10 false CANL 2,2.25 2.833,2.5 0.833,0.25 10 false D/C CUT 2.75,2.417 3.583,2.667 0.833,0.25 10 false 3C 2.75,2.167 3.583,2.417 0.833,0.25 10 false 1 3.938,2.26 5.167,2.583 1.229,0.323 10 false ECU-B NO.1 5.5,3.365 5.958,3.583 0.458,0.219 10 false A 5.458,3.167 5.917,3.385 0.458,0.219 10 false 31 5.833,3.365 6.292,3.583 0.458,0.219 10 false BECU 5.542,4.031 6,4.25 0.458,0.219 10 false A 5.5,3.833 5.958,4.052 0.458,0.219 10 false 30 5.833,4.031 6.292,4.25 0.458,0.219 10 false ACC 4.51,3.885 5.292,4.156 0.781,0.271 10 false ECU-ACC 5.521,4.885 5.979,5.104 0.458,0.219 10 false A 5.5,4.667 5.958,4.885 0.458,0.219 10 false 32 5.844,4.885 6.302,5.104 0.458,0.219 10 false IG 5.844,7.146 6.302,7.365 0.458,0.219 10 false GND1 5.51,7.156 5.969,7.375 0.458,0.219 10 false A 5.479,6.906 5.938,7.125 0.458,0.219 10 false 11 2.781,7.135 3.615,7.385 0.833,0.25 10 false 3B 2.802,6.938 3.635,7.188 0.833,0.25 10 false 3 2.76,6.073 3.594,6.323 0.833,0.25 10 false 3A 2.771,5.313 3.604,5.563 0.833,0.25 10 false 3D 3.542,6.365 4.219,6.771 0.677,0.406 10 false IG1 NO.1 Relay 3.479,4.563 4.313,4.813 0.833,0.25 10 false ACC Relay 2.76,3.375 3.594,3.625 0.833,0.25 10 false 3B 2.729,3.656 3.563,3.906 0.833,0.25 10 false 1*4 2.76,3.865 3.594,4.115 0.833,0.25 10 false 3G 2.76,3.177 3.594,3.427 0.833,0.25 10 false 23 0.99,3.865 2.448,4.188 1.458,0.323 10 false from Battery 3.021,7.792 4.677,8.375 1.656,0.583 10 false Instrument Panel Junction Block Assembly 5.229,7.813 6.896,8.208 1.667,0.396 10 false Main Body ECU (Multiplex Network Body ECU) 4.438,5.698 5.594,5.979 1.156,0.281 10 false ECU-IG1 NO.1 0.583,4.313 1.885,4.625 1.302,0.313 10 false from Ignition Switch 0.792,2.344 2.25,2.667 1.458,0.323 10 false from Battery 5.458,1.135 5.917,1.333 0.458,0.198 10 false N19 2.76,2.885 3.594,3.135 0.833,0.25 10 false 3D 2.76,2.677 3.594,2.927 0.833,0.25 10 false 29 1.917,4.771 2.75,5.021 0.833,0.25 10 false *1 2.292,5.115 3.125,5.365 0.833,0.25 10 false *2 0.083,7.417 2.156,7.646 2.073,0.229 10 false *1: w/ Stop and Start System 0.083,7.76 2.438,8.094 2.354,0.333 10 false *2: w/o Stop and Start System 0.813,6.094 2.208,6.594 1.396,0.5 10 false from Ignition Switch 0.083,8.135 2.146,8.448 2.063,0.313 10 false *3: for LHD 0.083,8.469 2.146,8.781 2.063,0.313 10 false *4: for RHD 0.167,4.885 1.573,5.281 1.406,0.396 10 false from Engine Stop and Start ECU*1 2.76,4.313 3.594,4.563 0.833,0.25 10 false 3A 2.74,4.104 3.573,4.354 0.833,0.25 10 false 30 2.75,5.885 3.583,6.135 0.833,0.25 10 false 17 2.75,4.656 3.583,4.906 0.833,0.25 10 false 15 2.375,3.865 3.208,4.115 0.833,0.25 10 false 3E 2.354,3.656 3.188,3.906 0.833,0.25 10 false 1*3 2.771,4.875 3.604,5.125 0.833,0.25 10 false 3A 2.781,5.115 3.615,5.365 0.833,0.25 10 false 35

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 (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] BRANCH WIRE)
a.

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


b.
C369119C29
1.583,0.167 2,0.417 0.417,0.25 2.188,0.917 2.354,0.917 2.354,0.917 2.5,1.531 true 2.333,0.75 2.5,0.75 2.5,0.75 2.719,1.563 true 0.094,0.104 0.406,0.302 0.313,0.198 10 false *a 1.667,0.219 1.979,0.417 0.313,0.198 10 false N19 1.917,0.688 2.396,0.896 0.479,0.208 10 false CANH 1.823,0.865 2.302,1.073 0.479,0.208 10 false CANL
*a Front view of wire harness connector
(to Main Body ECU [Multiplex Network Body ECU])


Disconnect the N19 main body ECU (multiplex network body ECU) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N19-5 (CANH) - N19-4 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR

NG

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR

2.CHECK HARNESS AND CONNECTOR
a.

Disconnect the 3A, 3B and 3D instrument panel junction block assembly connectors.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition

*: w/o Stop and Start System

3D-29 - 3B-23 Always Below 1 Ω
3A-15 - 3D-35* Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C414498C02
1.531,0.552 1.917,0.792 0.385,0.24 3.052,1.115 2.813,0.479 2.813,0.479 2.698,0.479 true 3.156,1.135 3.073,1.615 3.073,1.615 2.938,1.615 true 2.948,1.094 2.771,0.781 2.771,0.781 2.656,0.781 true 1.219,1.083 1.135,0.771 1.135,0.771 1.021,0.771 true 0.052,0.052 0.365,0.208 0.313,0.156 10 false *a 1.667,0.583 1.979,0.74 0.313,0.156 10 false A 2.281,0.385 2.719,0.563 0.438,0.177 10 false BECU 2.302,0.729 2.74,0.906 0.438,0.177 10 false ACC 2.76,1.542 3.198,1.719 0.438,0.177 10 false IG 0.604,0.698 1.042,0.875 0.438,0.177 10 false GND1
*a Component without harness connected
(Instrument Panel Junction Block Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
A-11 (GND1) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω



b.

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


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition

*1: w/o Stop and Start System

*2: w/ Stop and Start System

A-31 (BECU) - Body ground Always 11 to 14 V
A-30 (ACC) - Body ground Ignition switch ACC 11 to 14 V
Ignition switch off Below 1 V
A-32 (IG) - Body ground Ignition switch ON 11 to 14 V*1
10.5 to 16 V*2
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])

for LHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

4.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
4.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.

Disconnect the 3A, 3B, 3C, 3E*1 or 3G*2 instrument panel junction block assembly connectors.

*1: for LHD

*2: for RHD


C405955C01
5.073,1.406 5.49,1.656 0.417,0.25 2.458,1.396 2.875,1.646 0.417,0.25 0.948,1.365 1.365,1.615 0.417,0.25 5.094,0.094 5.51,0.344 0.417,0.25 1.813,0.083 2.229,0.333 0.417,0.25 1.938,0.115 2.25,0.313 0.313,0.198 10 false 3A 5.198,0.135 5.51,0.333 0.313,0.198 10 false 3B 5.208,1.458 5.521,1.656 0.313,0.198 10 false 3C 2.583,1.448 2.896,1.646 0.313,0.198 10 false 3E 1.094,1.417 1.406,1.615 0.313,0.198 10 false 3G 2.958,1.438 3.271,1.635 0.313,0.198 10 false *A 1.427,1.396 1.74,1.594 0.313,0.198 10 false *B 0.115,0.073 0.427,0.271 0.313,0.198 10 false *a
*A for LHD *B for RHD
*a Front view of wire harness connector
(to Instrument Panel Junction Block Assembly) 		- -



b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
3B-3 - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Condition Specified Condition

*1: for LHD

*2: for RHD

3C-1 - Body ground Always 11 to 14 V
3E-1 - Body ground*1 Always 11 to 14 V
3G-1 - Body ground*2 Always 11 to 14 V
3A-30 - Body ground Ignition switch ACC 11 to 14 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

5.CHECK VEHICLE TYPE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK VEHICLE TYPE
a.

Check for vehicle type.


Result:
Result Proceed to
w/ Stop and Start System A
w/o Stop and Start System B



A

6.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

B

7.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
6.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C405956C01
1.594,0.26 2.021,0.51 0.427,0.25 0.115,0.083 0.427,0.281 0.313,0.198 10 false *a 1.74,0.302 2.052,0.5 0.313,0.198 10 false 3A
*a Front view of wire harness connector
(to Instrument Panel Junction Block Assembly)


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
3A-15 - Body ground Ignition switch ACC 10.5 to 16 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

for LHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

GO TO STOP AND START SYSTEM

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>Backup Boost Converter Circuit


7.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C405956C01
1.594,0.26 2.021,0.51 0.427,0.25 0.115,0.083 0.427,0.281 0.313,0.198 10 false *a 1.74,0.302 2.052,0.5 0.313,0.198 10 false 3A
*a Front view of wire harness connector
(to Instrument Panel Junction Block Assembly)


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
3A-17 - Body ground Ignition switch ACC 11 to 14 V
Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

for LHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD: Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR