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))  Open in Bus 5 Main Bus Line  


DESCRIPTION

There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.

Symptom Trouble Area
Resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.
·

CAN main bus lines or connector

·

Central gateway ECU (network gateway ECU)

·

Combination meter assembly

·

No. 3 CAN junction connector



This malfunction is not related to the lines of a CAN branch or to ECUs or sensors connected to a CAN branch.

WIRING DIAGRAM

C416674E04
0.969,1.323 1.563,1.563 0.594,0.24 10 false 120 Ω 0.948,3.771 1.542,4.01 0.594,0.24 10 false 120 Ω 1.573,0.99 2.167,1.229 0.594,0.24 10 false CA5H 1.583,1.479 2.177,1.719 0.594,0.24 10 false CA5L 2.073,0.979 2.417,1.208 0.344,0.229 10 false 15 2.073,1.469 2.417,1.698 0.344,0.229 10 false 16 5.344,0.979 5.688,1.208 0.344,0.229 10 false 7 5.292,1.458 5.635,1.688 0.344,0.229 10 false 18 5.292,3.896 5.635,4.125 0.344,0.229 10 false 13 5.354,3.427 5.698,3.656 0.344,0.229 10 false 2 1.542,3.427 2.135,3.667 0.594,0.24 10 false CANH 1.583,3.906 2.177,4.146 0.594,0.24 10 false CANL 0.729,4.438 1.083,4.677 0.354,0.24 10 false I4 0.927,4.427 2.115,5.188 1.188,0.76 10 false Combination Meter Assembly 5.021,4.385 5.427,4.635 0.406,0.25 10 false I125 5.354,4.385 6.594,5.094 1.24,0.708 10 false No. 3 CAN Junction Connector 0.417,1.979 0.771,2.219 0.354,0.24 10 false I53 0.667,1.979 2.625,2.521 1.958,0.542 10 false Central Gateway ECU (Network Gateway ECU) 2.167,3.427 2.51,3.656 0.344,0.229 10 false 9 2.146,3.917 2.625,4.146 0.479,0.229 10 false 25

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



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 MAIN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR)
a.

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


b.

Disconnect the I125 No. 3 CAN junction connector.


c.

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

C416561C08
0.854,1.323 1.333,1.583 0.479,0.26 3.75,1.333 3.75,0.417 3.75,0.417 3.917,0.417 true 3.75,1.677 3.75,2.302 3.75,2.302 3.917,2.302 true 2.917,1.333 2.917,0.417 2.917,0.417 2.75,0.417 true 2.917,1.667 2.917,2.292 2.917,2.292 2.75,2.292 true 0.188,0.135 0.5,0.333 0.313,0.198 10 false *a 0.979,1.375 1.375,1.583 0.396,0.208 10 false I125 4.01,0.344 4.573,0.594 0.563,0.25 10 false CANH*c 4,2.229 4.563,2.479 0.563,0.25 10 false CANL*c 2.177,2.219 2.74,2.406 0.563,0.188 10 false CANL*b 2.177,0.344 2.74,0.594 0.563,0.25 10 false CANH*b
*a Front view of wire harness connector
(to No. 3 CAN Junction Connector) 		*b to Combination Meter Assembly
*c to Central Gateway ECU (Network Gateway ECU) - -


Standard Resistance:
Tester Connection Condition Specified Condition Connected to
I125-2 (CANH) - I125-13 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Combination meter assembly
I125-7 (CANH) - I125-18 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Central gateway ECU (network gateway ECU)



Result:
Result Proceed to
OK A
NG (Line to central gateway ECU (network gateway ECU)) B
NG (Line to combination meter assembly) C



A

REPLACE NO. 3 CAN JUNCTION CONNECTOR

B

2.CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 3 CAN JUNCTION CONNECTOR)

C

3.CHECK FOR OPEN IN CAN MAIN BUS LINES (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR)
2.CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 3 CAN JUNCTION CONNECTOR)
a.

Reconnect the I125 No. 3 CAN junction connector.


b.

Disconnect the I53 central gateway ECU (network gateway ECU) connector.


c.
C402518C26
1.479,0.156 1.906,0.385 0.427,0.229 1.208,1.792 1.375,1.792 1.375,1.792 1.375,1.208 true 1.677,1.792 1.51,1.792 1.51,1.792 1.51,1.208 true 0.083,0.073 0.396,0.271 0.313,0.198 10 false *a 1.594,0.188 2.052,0.385 0.458,0.198 10 false I53 0.802,1.708 1.417,1.906 0.615,0.198 10 false CA5H 1.76,1.698 2.375,1.896 0.615,0.198 10 false CA5L
*a Front view of wire harness connector
(to Central Gateway ECU (Network Gateway ECU))


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

Standard Resistance:
Tester Connection Condition Specified Condition
I53-15 (CA5H) - I53-16 (CA5L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Result
OK
NG



OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

Click herePower Source / Network>NETWORKING>NETWORK GATEWAY ECU>REMOVAL


NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 3 CAN JUNCTION CONNECTOR)

3.CHECK FOR OPEN IN CAN MAIN BUS LINES (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR)
a.

Reconnect the I125 No. 3 CAN junction connector.


b.

Disconnect the I4 combination meter assembly connector.


c.
C416207C01
1.417,0.458 1.854,0.708 0.438,0.25 0.865,2.865 0.698,2.865 0.698,2.865 0.698,2.115 true 0.865,0.813 0.698,0.813 0.698,0.813 0.698,1.813 true 0.135,0.104 0.448,0.302 0.313,0.198 10 false *a 0.938,0.729 1.521,1.031 0.583,0.302 10 false CANH 1.563,0.5 2.146,0.802 0.583,0.302 10 false I4 0.958,2.781 1.542,3.083 0.583,0.302 10 false CANL
*a Front view of wire harness connector
(to Combination Meter Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
I4-9 (CANH) - I4-25 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Result
OK
NG



OK

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL


NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR)