RM3660EC _57 Power Source / Network _080743 NETWORKING _0392424 CAN COMMUNICATION SYSTEM(for HV Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for HV Model)  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(Click here)
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Main body ECU (multiplex network body ECU) main line or connector

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Power source circuit of main body ECU (multiplex network body ECU) or power distribution box assembly

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Main body ECU (multiplex network body ECU) or power distribution box assembly ground circuit

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Main body ECU (multiplex network body ECU) or power distribution box assembly



WIRING DIAGRAM

C506900E01
0.417,1.458 3.313,1.729 2.896,0.271 10 false No. 12 CAN Junction Connector*1 0.073,1.458 0.635,1.677 0.563,0.219 10 false I224 1.656,0.188 2.094,0.406 0.438,0.219 10 false 6*2 5.5,0.438 5.938,0.656 0.438,0.219 10 false I85 5.5,1.115 5.938,1.333 0.438,0.219 10 false I85 5.531,0.188 5.969,0.406 0.438,0.219 10 false 2 5.521,0.854 5.958,1.073 0.438,0.219 10 false 1 2.844,2.833 3.281,3.052 0.438,0.219 10 false 23 2.802,3.083 3.24,3.302 0.438,0.219 10 false 10A 5.49,3.083 5.927,3.302 0.438,0.219 10 false MB 5.49,4.354 5.927,4.573 0.438,0.219 10 false MB 5.479,5.646 5.917,5.865 0.438,0.219 10 false MB 5.5,2.865 5.938,3.083 0.438,0.219 10 false 26 5.51,4.115 5.948,4.333 0.438,0.219 10 false 27 5.5,5.406 5.938,5.625 0.438,0.219 10 false 13 5.854,0.323 6.292,0.542 0.438,0.219 10 false CANH 5.854,0.99 6.292,1.208 0.438,0.219 10 false CANL 5.854,3.073 6.292,3.292 0.438,0.219 10 false BECU 5.854,4.344 6.292,4.563 0.438,0.219 10 false IGR 5.844,5.635 6.281,5.854 0.438,0.219 10 false GND1 4.313,4.198 5.354,4.51 1.042,0.313 10 false ECU-IGR NO. 2 3.542,4.906 4.333,5.198 0.792,0.292 10 false IGR NO. 2 2.823,4.615 3.26,4.833 0.438,0.219 10 false 10F 2.813,6.375 3.25,6.594 0.438,0.219 10 false 10F 2.844,4.385 3.281,4.604 0.438,0.219 10 false 17 2.875,6.135 3.198,6.354 0.323,0.219 10 false 1 0.125,4.635 1.979,5.313 1.854,0.677 10 false from Certification ECU (Smart Key ECU Assembly) 2.719,7.188 4.146,7.573 1.427,0.385 10 false Power Distribution Box Assembly 5.438,7.188 7.083,7.781 1.646,0.594 10 false Main Body ECU (Multiplex Network Body ECU) 3.844,2.927 5.104,3.208 1.26,0.281 10 false ECU-DCC NO. 2 5.49,6.375 5.927,6.594 0.438,0.219 10 false MB 5.844,6.385 6.281,6.604 0.438,0.219 10 false GND2 5.5,6.135 5.938,6.354 0.438,0.219 10 false 14 0.656,3.729 2.302,4.219 1.646,0.49 10 false from Auxiliary Battery 2.813,3.729 3.25,3.948 0.438,0.219 10 false 10B 2.896,3.458 3.333,3.677 0.438,0.219 10 false 1 2.021,2.927 2.74,3.26 0.719,0.333 10 false D/C CUT 0.208,3.094 1.854,3.583 1.646,0.49 10 false from Auxiliary Battery 1.625,0.854 2.063,1.073 0.438,0.219 10 false 17*2 2.802,5.302 3.24,5.521 0.438,0.219 10 false 10E 2.885,5.063 3.208,5.281 0.323,0.219 10 false 8 2.813,5.854 3.25,6.073 0.438,0.219 10 false 10F 2.875,5.625 3.198,5.844 0.323,0.219 10 false 8 0.073,1.76 0.635,1.979 0.563,0.219 10 false I214 0.417,1.76 3.313,2.031 2.896,0.271 10 false No. 15 CAN Junction Connector*2 1.656,0.031 2.094,0.25 0.438,0.219 10 false 4*1*4 1.625,0.698 2.271,0.948 0.646,0.25 10 false 15*1*4 0.063,6.073 2.094,6.531 2.031,0.458 10 false *1: for 8ZR-FXE (GTMC Made) 1.656,0.344 2.094,0.563 0.438,0.219 10 false 1*3 1.656,1 2.094,1.219 0.438,0.219 10 false 5*3 0.417,2.073 3.313,2.344 2.896,0.271 10 false No. 12 CAN Junction Connector*3 0.417,2.417 3.313,2.688 2.896,0.271 10 false No. 42 Junction Connector*4 0.073,2.073 0.635,2.292 0.563,0.219 10 false I236 0.073,2.417 0.635,2.635 0.563,0.219 10 false I232 0.063,6.438 2.094,6.896 2.031,0.458 10 false *2: for 8ZR-FXE (TFTM Made) 0.063,6.823 2.094,7.281 2.031,0.458 10 false *3: for M20F-FXS 0.063,7.229 2.094,7.688 2.031,0.458 10 false *4: for M20G-FXS

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 HV Model)>HOW TO PROCEED WITH TROUBLESHOOTING

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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 (-) auxiliary battery terminal and leave the vehicle for 10 minutes or more before measuring the resistance.

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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 BATTERY

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When disconnecting and reconnecting the auxiliary battery.

HINT:

When disconnecting and reconnecting the auxiliary 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


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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

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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.

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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 HV Model)>DIAGNOSIS SYSTEM

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

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Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.



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 (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) MAIN LINE)
a.

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


b.

Disconnect the I85 main body ECU (multiplex network body ECU) connector.


c.
C369119C62
1.583,0.167 2,0.417 0.417,0.25 1.104,0.885 0.938,0.885 0.938,0.885 0.938,1.552 true 0.938,0.708 0.771,0.708 0.771,0.708 0.771,1.542 true 0.094,0.104 0.406,0.302 0.313,0.198 10 false *a 1.688,0.198 2,0.396 0.313,0.198 10 false I85 1.031,0.635 1.51,0.844 0.479,0.208 10 false CANL 1.198,0.813 1.677,1.021 0.479,0.208 10 false CANH
*a Front view of wire harness connector
(to Main Body ECU (Multiplex Network Body ECU))


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

Standard Resistance:
Tester Connection Condition Specified Condition
I85-2 (CANH) - I85-1 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω



Result:
Result
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

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

Remove the main body ECU (multiplex network body ECU).

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


b.
C434125C37
1.521,0.24 1.906,0.49 0.385,0.25 2.656,0.677 2.823,0.677 2.823,0.677 2.823,1.177 true 1.573,0.677 1.74,0.677 1.74,0.677 1.74,1.177 true 1.49,0.917 1.656,0.917 1.656,0.917 1.656,1.167 true 0.146,0.115 0.458,0.313 0.313,0.198 10 false *1 1.604,0.302 1.917,0.5 0.313,0.198 10 false MB 2.24,0.615 2.979,0.99 0.74,0.375 10 false BECU 1.094,0.854 1.833,1.229 0.74,0.375 10 false GND1 1.146,0.615 1.885,0.99 0.74,0.375 10 false GND2
*1 Power Distribution Box Assembly


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

Standard Resistance:
Tester Connection Condition Specified Condition
MB-13 (GND1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
MB-14 (GND2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω


NOTICE:

Perform this inspection with the wire harness connected to the power distribution box assembly.



c.

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


d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
MB-26 (BECU) - Body ground Ignition switch off 11 to 14 V


NOTICE:

Perform this inspection with the wire harness connected to the power distribution box assembly assembly.



Result:
Result Proceed to
OK A
NG (BECU) B
NG (GND1 or GND2) C



A

CHECK ECU POWER SOURCE CIRCUIT

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM (except NR Series Engine)>IG Signal Circuit


B

3.CHECK HARNESS AND CONNECTOR (BECU SIGNAL CIRCUIT)

C

4.CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)
3.CHECK HARNESS AND CONNECTOR (BECU SIGNAL CIRCUIT)
a.

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


b.

Disconnect the 10A power distribution box assembly connector.


c.

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


d.
C436481C18
0.26,1.125 0.594,1.365 0.333,0.24 2.281,1.5 2.281,2 2.281,2 2.448,2 true 0.083,0.052 0.396,0.25 0.313,0.198 10 false *a 2.521,1.927 3.115,2.135 0.594,0.208 10 false 10A-23 0.313,1.167 0.625,1.365 0.313,0.198 10 false 10A
*a Front view of wire harness connector
(to Power Distribution Box Assembly)


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

Standard Voltage:
Tester Connection Condition Specified Condition
10A-23 - Body ground Ignition switch off 11 to 14 V



Result:
Result
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BECU SIGNAL CIRCUIT)

4.CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)
a.

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


b.

Disconnect the 10F power distribution box assembly connector.


c.
C352871C76
1.531,0.146 1.865,0.385 0.333,0.24 1.073,0.885 1.073,0.302 1.073,0.302 0.906,0.302 true 0.083,0.052 0.396,0.25 0.313,0.198 10 false *a 0.521,0.219 1.052,0.479 0.531,0.26 10 false 10F-1 1.583,0.188 1.896,0.385 0.313,0.198 10 false 10F
*a Front view of wire harness connector
(to Power Distribution Box Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
10F-1 - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω



Result:
Result
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)