RM36D0EC _57 Power Source / Network _083091 NETWORKING _0694855 CAN COMMUNICATION SYSTEM(for GTMC Made HV Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for GTMC Made HV Model)  Hybrid Battery ECU Communication Stop Mode  


DESCRIPTION

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

Battery ECU assembly branch wire or connector

·

Power source circuit of battery ECU assembly

·

Battery ECU assembly ground circuit

·

Battery ECU assembly



WIRING DIAGRAM

C306886E18
1.042,2.01 2.49,2.219 1.448,0.208 10 false from Auxiliary Battery 1.354,2.51 2.469,2.802 1.115,0.292 10 false from IGCT Relay 3.5,1.833 4.479,2 0.979,0.167 10 false ECU-B NO.2 3.583,2.354 4.604,2.521 1.021,0.167 10 false IGCT NO.2 5.771,3.427 6.375,3.583 0.604,0.156 10 false GND1 5.781,3.031 6.385,3.188 0.604,0.156 10 false GND 5.781,2.552 6.385,2.708 0.604,0.156 10 false IGCT 5.781,2.063 6.385,2.219 0.604,0.156 10 false AM 5.49,2.406 5.719,2.573 0.229,0.167 10 false 13 5.531,1.896 5.698,2.083 0.167,0.188 10 false 1 5.51,2.875 5.771,3.104 0.26,0.229 10 false 27 5.552,3.292 5.719,3.479 0.167,0.188 10 false 3 0.281,1.5 2.333,1.854 2.052,0.354 10 false No. 3 CAN Junction Connector 0.271,1.333 1.323,1.563 1.052,0.229 10 false G103 1.781,0.292 2.01,0.458 0.229,0.167 10 false 10 1.792,0.854 2.052,1.073 0.26,0.219 10 false 20 5.479,0.302 5.719,0.51 0.24,0.208 10 false 29 5.479,0.875 5.708,1.042 0.229,0.167 10 false 28 5.771,0.385 6.375,0.542 0.604,0.156 10 false CA2H 5.781,0.969 6.385,1.125 0.604,0.156 10 false CA2L 5.427,4.125 6.958,4.406 1.531,0.281 10 false Battery ECU Assembly 5.427,3.927 5.969,4.198 0.542,0.271 10 false z26

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 GTMC 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 GTMC 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 (BATTERY ECU ASSEMBLY BRANCH WIRE)
a.

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


b.
C378946C07
1.521,0.063 1.896,0.281 0.375,0.219 1.25,3.031 1.417,3.031 1.417,3.031 1.417,2.198 true 1.698,3.031 1.531,3.031 1.531,3.031 1.531,2.198 true 1.583,0.094 2.042,0.292 0.458,0.198 10 false z26 0.146,0.094 0.604,0.292 0.458,0.198 10 false *a 1.781,2.958 2.417,3.198 0.635,0.24 10 false CA2H 0.875,2.979 1.51,3.219 0.635,0.24 10 false CA2L
*a Front view of wire harness connector
(to Battery ECU Assembly)


Disconnect the battery ECU assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
z26-29 (CA2H) - z26-28 (CA2L) 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 WIRE OR CONNECTOR

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C378946C08
1.521,0.063 1.896,0.281 0.375,0.219 0.896,2.875 1.063,2.875 1.063,2.875 1.063,2.073 true 0.781,0.469 0.948,0.469 0.948,0.469 1.281,1.885 true 0.396,0.792 0.563,0.792 0.563,0.792 1.042,1.906 true 1.458,2.938 1.292,2.938 1.292,2.938 1.292,2.188 true 1.594,0.104 2.052,0.302 0.458,0.198 10 false z26 0.146,0.094 0.604,0.292 0.458,0.198 10 false *a 0.521,2.802 1.156,3.042 0.635,0.24 10 false IGCT 0.365,0.396 1,0.635 0.635,0.24 10 false GND1 0.094,0.708 0.729,0.948 0.635,0.24 10 false AM 1.542,2.865 2.177,3.104 0.635,0.24 10 false GND
*a Front view of wire harness connector
(to Battery ECU Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
z26-3 (GND1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
z26-27 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω



b.

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

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.



c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
z26-1 (AM) - Body ground Power switch off 11 to 14 V
z26-13 (IGCT) - Body ground Power switch on (IG) 11 to 14 V
Power switch off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE BATTERY ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>BATTERY ECU (for LITHIUM-ION BATTERY [Production date from 2021/08])>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR