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

NETWORKING  CAN COMMUNICATION SYSTEM(for HEV Model)  Motor Generator Control ECU Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
Motor Generator Control ECU Communication Stop Mode Communication stop for "Motor Generator" is indicated on the "Communication Bus Check" screen of the GTS.
Click here(Click here)
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Inverter with converter assembly connector

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Power source circuit of inverter with converter assembly

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Inverter with converter assembly ground circuit

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Inverter with converter assembly



WIRING DIAGRAM

C484967E03
0.708,1.063 2.594,1.313 1.885,0.25 10 false from IGCT-MAIN NO. 1 Relay 5.406,3.75 6.802,4.25 1.396,0.5 10 false Inverter with Converter Assembly 3.708,1.25 4.542,1.479 0.833,0.229 10 false PCU NO. 1 3.708,2.344 4.542,2.573 0.833,0.229 10 false PCU NO. 2 5.677,1.083 6.198,1.313 0.521,0.229 10 false IGC1 5.667,1.635 6.188,1.865 0.521,0.229 10 false IGC2 5.677,2.188 6.198,2.417 0.521,0.229 10 false IGCT 5.677,2.708 6.198,2.938 0.521,0.229 10 false GND1 5.677,3.26 6.198,3.49 0.521,0.229 10 false GND2 5.354,0.896 5.521,1.115 0.167,0.219 10 false 1 5.365,1.438 5.531,1.656 0.167,0.219 10 false 9 5.365,1.958 5.531,2.177 0.167,0.219 10 false 3 5.354,2.49 5.521,2.708 0.167,0.219 10 false 4 5.323,3.052 5.615,3.26 0.292,0.208 10 false 12 5.25,3.229 5.667,3.458 0.417,0.229 10 false A192 5.26,2.698 5.677,2.927 0.417,0.229 10 false A192 5.25,2.156 5.667,2.385 0.417,0.229 10 false A193 5.26,1.625 5.677,1.854 0.417,0.229 10 false A192 5.26,1.094 5.677,1.323 0.417,0.229 10 false A192

CAUTION / NOTICE / HINT

CAUTION:
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When performing the confirmation driving pattern, obey all speed limits and traffic laws.

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A340358

Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.

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Inspecting the high-voltage system

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Disconnecting the low voltage connector of the inverter with converter assembly

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Disconnecting the low voltage connector of the HV battery


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A371653

To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.

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A358042

After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

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A371654C04
1.563,1.229 1.333,0.813 true 1.156,0.677 1.469,0.875 0.313,0.198 10 false *a
*a Without waiting for 10 minutes


After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>PRECAUTION

HINT:

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.




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

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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 minute 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 HEV Model)>DIAGNOSIS SYSTEM

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



HINT:
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Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.

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When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

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


c.

Disconnect the inverter with converter assembly.


d.

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

C484968C03
4.948,0.417 5.448,0.667 0.5,0.25 1.615,0.125 2.115,0.375 0.5,0.25 1.823,1.198 2.667,0.417 true 1.823,1.354 2.667,2.333 true 1.469,1.354 0.917,1.833 true 1.469,1.198 0.917,0.667 true 5.219,1.438 5.906,2.25 true 0.094,0.063 0.406,0.219 0.313,0.156 10 false *a 2.729,0.313 3.229,0.563 0.5,0.25 10 false GND1 0.563,0.573 1.063,0.823 0.5,0.25 10 false IGC1 0.552,1.729 1.052,1.979 0.5,0.25 10 false IGC2 2.51,2.354 3.01,2.604 0.5,0.25 10 false GND2 5.771,2.313 6.271,2.563 0.5,0.25 10 false IGCT 1.708,0.156 2.208,0.406 0.5,0.25 10 false A192 5.042,0.448 5.542,0.698 0.5,0.25 10 false A193
*a Front view of wire harness connector
(to Inverter with Converter Assembly) 		- -


Standard Resistance:
Tester Connection Condition Specified Condition
A192-4 (GND1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
A192-12 (GND2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω



e.

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


f.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A192-1 (IGC1) - Body ground Ignition switch ON Same as auxiliary battery voltage
A192-9 (IGC2) - Body ground Ignition switch ON Same as auxiliary battery voltage
A193-3 (IGCT) - Body ground Ignition switch ON Same as auxiliary battery voltage



Result:
Proceed to
OK
NG



OK

REPLACE MG ECU (REPLACE INVERTER WITH CONVERTER ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)