RM3660EC _57 Power Source / Network _080743 NETWORKING _0598517 CAN COMMUNICATION SYSTEM(for Gasoline Model (NR Series)) J

NETWORKING  CAN COMMUNICATION SYSTEM(for Gasoline Model (NR Series))  DCM Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
DCM Communication Stop Mode Any of the following conditions are met:
·

Communication stop for "DCM" is indicated on the "Communication Bus Check" screen of the GTS.

Click here(Click here)

·

Communication stop history for "DCM" is indicated on the "Communication Bus Check (Detail)" screen of the GTS. (The Lost Communication Time value for "DCM" is 6 or more.)

Click here(Click here)

·

Communication system DTCs (DTCs that start with U) that correspond to "DCM Communication Stop Mode" in "DTC Combination Table" are output.

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·

Telematics transceiver branch line or connector

·

Power source circuit of telematics transceiver

·

Telematics transceiver ground circuit

·

Telematics transceiver



WIRING DIAGRAM

C461856E02
0.208,1.375 0.667,1.573 0.458,0.198 10 false I132 0.563,1.385 2.75,1.667 2.188,0.281 10 false No. 6 CAN Junction Connector 5.333,0.313 5.792,0.51 0.458,0.198 10 false 25 5.344,0.906 5.802,1.104 0.458,0.198 10 false 26 5.656,0.427 6.177,0.698 0.521,0.271 10 false CANP 5.656,1.021 6.146,1.281 0.49,0.26 10 false CANN 3.885,2.479 5.104,2.802 1.219,0.323 10 false DCM/MAYDAY 3.865,3.563 5.042,3.844 1.177,0.281 10 false ECU-IG2 NO. 3 5.396,2.479 5.854,2.677 0.458,0.198 10 false 1 5.354,3.573 5.813,3.771 0.458,0.198 10 false 19 5.333,4.167 5.792,4.365 0.458,0.198 10 false 20 5.667,4.281 6.125,4.479 0.458,0.198 10 false E 5.656,3.708 6.115,3.906 0.458,0.198 10 false IG2 5.656,2.615 6.115,2.813 0.458,0.198 10 false +B 5.313,4.917 5.771,5.115 0.458,0.198 10 false I72 5.594,4.906 7.083,5.323 1.49,0.417 10 false Telematics Transceiver 1.708,3.719 3.24,4.073 1.531,0.354 10 false from IG2-NO. 2 Relay 2.292,2.625 4.375,3.031 2.083,0.406 10 false from Battery 1.823,0.229 2.281,0.427 0.458,0.198 10 false 3 1.781,0.885 2.24,1.083 0.458,0.198 10 false 14

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 Gasoline Model (NR Series))>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 (-) battery terminal and leave the vehicle for 10 minutes 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 battery.

HINT:

When disconnecting and reconnecting the 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 Gasoline Model (NR Series))>DIAGNOSIS SYSTEM

·

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

·

Before replacing the telematics transceiver, refer to Service Bulletin.



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 (TELEMATICS TRANSCEIVER BRANCH LINE)
a.

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


b.

Disconnect the I72 telematics transceiver connector.


c.
C416182C07
1.469,0.167 1.979,0.469 0.51,0.302 1.333,1.875 1.333,2.615 1.333,2.615 1.5,2.615 true 1.208,1.885 1.208,2.792 1.208,2.792 1.375,2.792 true 1.635,0.24 2.094,0.438 0.458,0.198 10 false I72 1.583,2.521 2.281,2.792 0.698,0.271 10 false CANN 1.438,2.708 2.135,2.979 0.698,0.271 10 false CANP 0.125,0.063 0.583,0.26 0.458,0.198 10 false *a
*a Front view of wire harness connector
(to Telematics Transceiver)


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

Standard Resistance:
Tester Connection Condition Specified Condition
I72-25 (CANP) - I72-26 (CANN) Cable disconnected from negative (-) battery terminal 54 to 69 Ω



Result:
Result
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (TELEMATICS TRANSCEIVER)

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C416182C06
1.469,0.167 1.979,0.469 0.51,0.302 0.344,1.635 0.344,0.885 0.344,0.885 0.5,0.885 true 0.552,1.875 0.552,2.615 0.552,2.615 0.719,2.615 true 0.417,1.885 0.417,2.792 0.417,2.792 0.583,2.792 true 1.635,0.24 2.094,0.438 0.458,0.198 10 false I72 0.677,2.719 1.375,2.99 0.698,0.271 10 false IG2 0.125,0.063 0.583,0.26 0.458,0.198 10 false *a 0.583,0.813 1.281,1.083 0.698,0.271 10 false +B 0.792,2.531 1.49,2.802 0.698,0.271 10 false E
*a Front view of wire harness connector
(to Telematics Transceiver)


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

Standard Resistance:
Tester Connection Condition Specified Condition
I72-20 (E) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω



b.

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


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
I72-1 (+B) - Body ground Always 11 to 14 V
I72-19 (IG2) - Body ground Ignition switch ON 11 to 14 V



Result:
Result
OK
NG



OK

REPLACE TELEMATICS TRANSCEIVER

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)