RM38T0EC _57 Power Source / Network _104409 NETWORKING _0606038 CAN COMMUNICATION SYSTEM(for HEV Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for HEV Model)  Power Back Door ECU Communication Stop Mode  


DESCRIPTION

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

Multiplex network door ECU branch line or connector

·

Power source circuit of multiplex network door ECU

·

Multiplex network door ECU ground circuit

·

Multiplex network door ECU



WIRING DIAGRAM

C404446E29
5.333,4.438 7.104,4.698 1.771,0.26 10 false Multiplex Network Door ECU 0.188,1.948 2.896,2.156 2.708,0.208 10 false No. 6 Global CAN Junction Connector 0.177,1.76 0.563,1.948 0.385,0.188 10 false O205 5.781,0.813 6.25,1 0.469,0.188 10 false CANP 5.771,1.344 6.229,1.531 0.458,0.188 10 false CANN 5.781,2.406 6.01,2.583 0.229,0.177 10 false B 5.792,2.948 6.042,3.125 0.25,0.177 10 false IG 5.792,3.49 6.24,3.677 0.448,0.188 10 false ECUB 5.792,4 6.177,4.177 0.385,0.177 10 false GND 4.229,3.656 5.302,3.844 1.073,0.188 10 false ECU-B NO. 2 4.198,3.115 5.177,3.302 0.979,0.188 10 false ECU-IGR NO. 1 4.5,2.573 4.823,2.75 0.323,0.177 10 false PBD 2.24,2.396 3.708,2.615 1.469,0.219 10 false from Auxiliary Battery 2.219,2.938 3.896,3.167 1.677,0.229 10 false from IGR NO. 1 Relay 1.635,1.25 1.927,1.427 0.292,0.177 10 false 18 1.646,0.719 1.854,0.896 0.208,0.177 10 false 7 5.469,0.625 5.677,0.802 0.208,0.177 10 false 39 5.479,1.167 5.688,1.344 0.208,0.177 10 false 40 5.448,0.813 5.781,1.021 0.333,0.208 10 false U22 5.438,2.958 5.75,3.135 0.313,0.177 10 false U22 5.438,3.479 5.74,3.667 0.302,0.188 10 false U22 5.448,2.417 5.781,2.604 0.333,0.188 10 false U21 5.448,4 5.792,4.177 0.344,0.177 10 false U21 5.521,2.229 5.729,2.406 0.208,0.177 10 false 1 5.479,2.76 5.688,2.938 0.208,0.177 10 false 18 5.49,3.292 5.698,3.469 0.208,0.177 10 false 20 5.49,3.813 5.698,3.99 0.208,0.177 10 false 10 2.219,3.479 3.948,3.698 1.729,0.219 10 false from Auxiliary Battery 5.448,1.344 5.781,1.552 0.333,0.208 10 false U22

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 HEV Model)>HOW TO PROCEED WITH TROUBLESHOOTING

·

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 minute 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 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 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 HEV Model)>DIAGNOSIS SYSTEM

·

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 (MULTIPLEX NETWORK DOOR ECU BRANCH LINE)
a.

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


b.

Disconnect the multiplex network door ECU connector.


c.
C427501C06
1.417,0.375 1.875,0.635 0.458,0.26 2.729,2.688 2.958,2.104 true 2.854,2.969 3.104,2.125 true 0.115,0.146 0.427,0.344 0.313,0.198 10 false *a 1.51,0.427 1.823,0.625 0.313,0.198 10 false U22 2.313,2.604 2.781,2.813 0.469,0.208 10 false CANP 2.438,2.896 2.906,3.104 0.469,0.208 10 false CANN
*a Front view of wire harness connector
(to Multiplex Network Door ECU)


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

Standard Resistance:
Tester Connection Condition Specified Condition
U22-39 (CANP) - U22-40 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (MULTIPLEX NETWORK DOOR ECU)

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

Disconnect the multiplex network door ECU connector.


b.

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

C427517C10
0.49,0.844 0.938,1.094 0.448,0.25 3.115,0.875 3.563,1.125 0.448,0.25 6.219,0.917 6.427,0.281 true 5.99,0.917 5.813,0.26 true 2.24,1.083 2.448,1.417 true 1.333,0.427 1.521,0.823 true 0.146,0.104 0.458,0.302 0.313,0.198 10 false *a 0.573,0.875 0.938,1.104 0.365,0.229 10 false U21 3.208,0.917 3.573,1.146 0.365,0.229 10 false U22 2.49,1.365 2.938,1.594 0.448,0.229 10 false GND 1.198,0.333 1.646,0.563 0.448,0.229 10 false B 5.625,0.177 6.073,0.406 0.448,0.229 10 false IG 6.479,0.188 6.927,0.417 0.448,0.229 10 false ECUB
*a Front view of wire harness connector
(to Multiplex Network Door ECU) 		- -


Standard Resistance:
Tester Connection Condition Specified Condition
U21-10 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω



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 Switch Condition Specified Condition
U22-20 (ECUB) - Body ground Ignition switch off 11 to 14 V
U21-1 (B) - Body ground Ignition switch off 11 to 14 V
U22-18 (IG) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE MULTIPLEX NETWORK DOOR ECU

Click hereVehicle Exterior>DOOR / HATCH>BACK DOOR CLOSER ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)