RM36D0EC _57 Power Source / Network _083091 NETWORKING _0694853 CAN COMMUNICATION SYSTEM(for SFTM Made HV Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for SFTM Made 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)
·

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

·

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

·

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

·

Main body ECU (multiplex network body ECU)

·

Power distribution box assembly



WIRING DIAGRAM

For the circuit diagram of the main bod ECU (multiplex network body ECU) IG signal circuit.

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>IG Signal Circuit

C535177E03
1.979,0.646 2.135,0.844 0.156,0.198 10 false 2 1.99,1.313 2.146,1.51 0.156,0.198 10 false 8 0.521,1.75 0.979,1.969 0.458,0.219 10 false N52 0.5,1.948 2.583,2.25 2.083,0.302 10 false No. 7 CAN Junction Connector 5.531,0.802 5.99,1.021 0.458,0.219 10 false G169 5.531,1.469 5.99,1.688 0.458,0.219 10 false G169 5.635,3.021 6.094,3.24 0.458,0.219 10 false A 5.656,3.938 6.115,4.156 0.458,0.219 10 false A 5.656,4.688 6.115,4.906 0.458,0.219 10 false A 5.656,0.573 6.115,0.792 0.458,0.219 10 false 2 5.656,1.229 6.115,1.448 0.458,0.219 10 false 1 5.615,2.771 6.073,2.99 0.458,0.219 10 false 26 5.625,3.719 6.083,3.938 0.458,0.219 10 false 13 5.625,4.448 6.083,4.667 0.458,0.219 10 false 14 5.948,4.688 6.406,4.906 0.458,0.219 10 false GND2 5.969,3.948 6.427,4.167 0.458,0.219 10 false GND1 5.969,3.01 6.427,3.229 0.458,0.219 10 false BECU 3.729,2.875 4.833,3.104 1.104,0.229 10 false ECU-DCC NO.2 3.083,3.021 3.542,3.24 0.458,0.219 10 false 6E 3.104,3.938 3.563,4.156 0.458,0.219 10 false 6B 3.104,4.688 3.563,4.906 0.458,0.219 10 false 6C 3.104,4.438 3.563,4.656 0.458,0.219 10 false 41 3.125,3.698 3.583,3.917 0.458,0.219 10 false 36 3.125,2.781 3.583,3 0.458,0.219 10 false 23 0.531,3.01 2.073,3.708 1.542,0.698 10 false from Auxiliary Battery 5.948,1.323 6.406,1.542 0.458,0.219 10 false CANL 5.958,0.656 6.417,0.875 0.458,0.219 10 false CANH 3.604,5.469 4.833,5.906 1.229,0.438 10 false Power Distribution Box Assembly 5.365,5.5 7.052,6.021 1.688,0.521 10 false Main Body ECU (Multiplex Network Body ECU)

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 SFTM Made HV Model)>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 power 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.

·

After the power 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

·

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


·

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 power switch on (IG) 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 SFTM Made HV Model)>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] MAIN WIRE)
a.

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


b.
C369119C80
1.583,0.167 2.021,0.427 0.438,0.26 0.49,0.896 0.656,0.896 0.656,0.896 0.75,1.552 true 0.656,0.667 0.823,0.667 0.823,0.667 0.958,1.573 true 0.094,0.104 0.406,0.302 0.313,0.198 10 false *a 1.635,0.219 2.083,0.479 0.448,0.26 10 false G169 0.229,0.573 0.708,0.781 0.479,0.208 10 false CANH 0.083,0.844 0.563,1.052 0.479,0.208 10 false CANL
*a Front view of wire harness connector
(to Main Body ECU [Multiplex Network Body ECU])


Disconnect the 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
G169-2 (CANH) - G169-1 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR

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.

Connect the power distribution box assembly connectors.


c.
C227508C85
1.51,0.354 1.896,0.594 0.385,0.24 2.563,1.125 2.563,1.594 2.563,1.594 2.427,1.594 true 1.385,1.094 1.135,0.771 1.135,0.771 1.021,0.771 true 1.49,1.115 1.406,1.594 1.406,1.594 1.271,1.594 true 0.052,0.052 0.365,0.208 0.313,0.156 10 false *a 1.656,0.396 1.969,0.552 0.313,0.156 10 false A 2,1.521 2.594,1.792 0.594,0.271 10 false BECU 0.552,0.698 0.99,0.875 0.438,0.177 10 false GND1 0.844,1.531 1.365,1.781 0.521,0.25 10 false GND2
*a Component without harness connected
(Power Distribution Box Assembly)


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

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



d.

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


e.

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

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



Result:
Proceed to
OK
NG



OK

3.CHECK IG SIGNAL CIRCUIT

NG

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

Check the IG signal circuit.

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>IG Signal Circuit


Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (IG SIGNAL CIRCUIT)

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

Disconnect the power distribution box assembly connectors.

C535178C01
1.188,0.115 1.552,0.354 0.365,0.24 3.646,0.135 4.01,0.375 0.365,0.24 5.625,0.125 5.99,0.365 0.365,0.24 0.125,0.115 0.438,0.313 0.313,0.198 10 false *a 1.281,0.188 1.594,0.385 0.313,0.198 10 false 6B 3.74,0.177 4.052,0.375 0.313,0.198 10 false 6C 5.719,0.167 6.031,0.365 0.313,0.198 10 false 6E
*a Front view of wire harness connector
(to Power Distribution Box Assembly) 		- -



b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
6B-36 - Body ground Always Below 1 Ω
6C-41 - Body ground Always Below 1 Ω



c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
6E-23 - Body ground Power switch off 11 to 14 V



Result:
Proceed to
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