RM3660EC _57 Power Source / Network _080743 NETWORKING _0392424 CAN COMMUNICATION SYSTEM(for HV Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for HV Model)  Certification ECU Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
Certification ECU Communication Stop Mode Communication stop for "Certification (Smart)" and/or "Power Management" is indicated on the "Communication Bus Check" screen of the GTS.
Click here(Click here)
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Certification ECU (smart key ECU assembly) branch line or connector

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Power source circuit of certification ECU (smart key ECU assembly)

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Certification ECU (smart key ECU assembly) ground circuit

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Certification ECU (smart key ECU assembly)



WIRING DIAGRAM

C506902E01
0.427,1.271 3.365,1.604 2.938,0.333 10 false No. 12 CAN Junction Connector*1 0.104,1.271 0.625,1.583 0.521,0.313 10 false I224 1.719,0.26 2.417,0.583 0.698,0.323 10 false 3*2*3*4 5.583,0.344 6.156,0.615 0.573,0.271 10 false CANH 5.604,0.938 6.177,1.208 0.573,0.271 10 false CANL 5.615,2.854 6.188,3.125 0.573,0.271 10 false +B 5.615,3.438 6.188,3.708 0.573,0.271 10 false E 5.313,0.229 5.76,0.5 0.448,0.271 10 false 1 5.344,0.802 5.792,1.073 0.448,0.271 10 false 2 5.354,2.74 5.802,3.01 0.448,0.271 10 false 6 5.302,3.313 5.75,3.583 0.448,0.271 10 false 29 5.521,4.042 7.042,4.594 1.521,0.552 10 false Certification ECU (Smart Key ECU Assembly) 5.208,4.042 5.656,4.313 0.448,0.271 10 false I196 4.042,2.719 4.49,2.99 0.448,0.271 10 false AM2 1.646,2.833 3.135,3.115 1.49,0.281 10 false from Auxiliary Battery 1.729,0.688 2.177,0.958 0.448,0.271 10 false 14*2*4 0.104,1.563 0.625,1.875 0.521,0.313 10 false I214 0.427,1.552 3.365,1.885 2.938,0.333 10 false No. 15 CAN Junction Connector*2 1.719,0.094 2.167,0.365 0.448,0.271 10 false 1*1 1.729,0.552 2.177,0.823 0.448,0.271 10 false 12*1 0.344,3.375 2.417,3.688 2.073,0.313 10 false *1: for 8ZR-FXE (GTMC Made) 1.729,0.833 2.177,1.104 0.448,0.271 10 false 7*3 0.427,1.844 3.365,2.177 2.938,0.333 10 false No. 12 CAN Junction Connector*3 0.427,2.167 3.365,2.5 2.938,0.333 10 false No. 42 Junction Connector*4 0.104,1.844 0.625,2.156 0.521,0.313 10 false I236 0.104,2.167 0.625,2.479 0.521,0.313 10 false I232 0.344,3.719 2.417,4.031 2.073,0.313 10 false *2: for 8ZR-FXE (TFTM Made) 0.344,4.031 2.417,4.344 2.073,0.313 10 false *3: for M20F-FXS 0.344,4.344 2.417,4.656 2.073,0.313 10 false *4: for M20G-FXS

CAUTION / NOTICE / HINT

CAUTION:

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


NOTICE:
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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 HV 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 minutes 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 HV Model)>DIAGNOSIS SYSTEM

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

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Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.



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 FOR OPEN IN CAN BUS LINES (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) BRANCH LINE)
a.

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


b.

Disconnect the I196 certification ECU (smart key ECU assembly) connector.


c.
C434858C73
0.104,0.979 0.51,1.25 0.406,0.271 0.813,0.292 0.979,0.292 0.979,0.292 0.979,0.875 true 1.313,0.292 1.146,0.292 1.146,0.292 1.146,0.875 true 0.125,0.094 0.438,0.292 0.313,0.198 10 false *a 0.198,1.042 0.51,1.24 0.313,0.198 10 false I196 0.385,0.219 0.875,0.417 0.49,0.198 10 false CANH 1.406,0.219 1.896,0.417 0.49,0.198 10 false CANL
*a Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly))


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

Standard Resistance:
Tester Connection Condition Specified Condition
I196-1 (CANH) - I196-2 (CANL) Cable disconnected from negative (-) auxiliary 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 (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C434858C74
0.104,0.979 0.51,1.25 0.406,0.271 2.594,1.979 2.427,1.979 2.427,1.979 2.427,1.313 true 1.073,0.229 0.906,0.229 0.906,0.229 0.906,1.063 true 0.125,0.094 0.438,0.292 0.313,0.198 10 false *a 0.198,1.042 0.51,1.24 0.313,0.198 10 false I196 2.688,1.885 3.177,2.083 0.49,0.198 10 false E 1.156,0.146 1.646,0.344 0.49,0.198 10 false +B
*a Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly))


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

Standard Resistance:
Tester Connection Condition Specified Condition
I196-29 (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 Condition Specified Condition
I196-6 (+B) - Body ground Ignition switch off 11 to 14 V



Result:
Result
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)