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)  DCM Communication Stop Mode  


DESCRIPTION

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

Telephone transceiver branch wire or connector

·

Power source circuit of Telephone transceiver

·

Telephone transceiver ground circuit

·

Telephone transceiver



WIRING DIAGRAM

C348640E94
5.094,4.781 5.667,4.969 0.573,0.188 10 false G131 5.073,4.948 6.719,5.448 1.646,0.5 10 false Telephone Transceiver 5.594,4.135 6.438,4.354 0.844,0.219 10 false E 5.594,3.313 6.438,3.531 0.844,0.219 10 false IG2 5.583,2.49 6.427,2.708 0.844,0.219 10 false +B 5.375,2.417 6.219,2.635 0.844,0.219 10 false 1 5.333,3.229 6.177,3.448 0.844,0.219 10 false 19 5.323,4.073 6.167,4.292 0.844,0.219 10 false 20 4.125,2.375 5.104,2.594 0.979,0.219 10 false DCM 1.635,2.521 3.031,2.833 1.396,0.313 10 false from Auxiliary Battery 3.865,3.188 4.969,3.469 1.104,0.281 10 false ECU-IGR NO.2 5.594,1 6.438,1.219 0.844,0.219 10 false CANP 5.594,1.573 6.438,1.792 0.844,0.219 10 false CANN 5.292,1.521 6.135,1.74 0.844,0.219 10 false 26 5.302,0.917 6.146,1.135 0.844,0.219 10 false 25 1.635,0.917 2.479,1.135 0.844,0.219 10 false 3 1.625,1.521 2.469,1.74 0.844,0.219 10 false 14 0.229,1.969 2.365,2.271 2.135,0.302 10 false G105 0.229,2.125 2.396,2.458 2.167,0.333 10 false No. 5 CAN Junction Connector 1.688,3.323 3.146,3.594 1.458,0.271 10 false from IGR NO.2 Relay

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 (TELEPHONE TRANSCEIVER ASSEMBLY BRANCH WIRE)
a.

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


b.
E423827C04
1.49,0.271 1.938,0.542 0.448,0.271 0.833,1.917 1,1.917 1,1.917 1.25,1.25 true 1.75,1.917 1.583,1.917 1.583,1.917 1.375,1.229 true 0.135,0.083 0.313,0.25 0.177,0.167 10 false *a 1.552,0.323 1.969,0.49 0.417,0.167 10 false G131 0.396,1.865 0.854,2.031 0.458,0.167 10 false CANP 1.813,1.865 2.271,2.031 0.458,0.167 10 false CANN
*a Front view of wire harness connector
(to Telephone Transceiver)


Disconnect the telephone transceiver connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
G131-25 (CANP) - G131-26 (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 WIRE OR CONNECTOR

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
E423827C01
1.49,0.271 1.938,0.542 0.448,0.271 0.635,0.406 0.51,0.406 0.51,0.406 0.479,1.052 true 0.406,1.906 0.281,1.906 0.281,1.906 0.563,1.229 true 0.979,1.917 0.854,1.917 0.854,1.917 0.667,1.229 true 0.135,0.083 0.313,0.25 0.177,0.167 10 false *a 1.552,0.323 1.969,0.49 0.417,0.167 10 false G131 0.688,0.344 0.969,0.5 0.281,0.156 10 false +B 0.458,1.844 0.771,2 0.313,0.156 10 false IG2 1.021,1.844 1.188,2.021 0.167,0.177 10 false E
*a Front view of wire harness connector
(to Telephone Transceiver)


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

Standard Resistance:
Tester Connection Condition Specified Condition
G131-20 (E) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω



b.

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


c.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
G131-1 (+B) - Body ground Power switch off 11 to 14 V
G131-19 (IG2) - Body ground Power switch on (IG) 11 to 14 V
Power switch off Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE TELEPHONE TRANSCEIVER

Click hereAudio / Visual / Telematics>TELEMATICS>TELEMATICS TRANSCEIVER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR