RM35X0E _57 Power Source / Network _078518 NETWORKING _0381088 CAN COMMUNICATION SYSTEM J

NETWORKING  CAN COMMUNICATION SYSTEM  Parking Assist ECU Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
Parking Assist ECU Communication Stop Mode Communication stop for "Panoramic View Monitor/Circumference Monitoring Camera Control Module" is indicated on the "Communication Bus Check" screen of the GTS.
(Click here)
·

Parking assist ECU branch wire or connector

·

Power source circuit of parking assist ECU

·

Parking assist ECU ground circuit

·

Parking assist ECU



WIRING DIAGRAM

C414792E02
0.156,1.208 0.771,1.406 0.615,0.198 10 false N224 0.188,1.406 2.188,1.667 2,0.26 10 false No. 9 CAN Junction Connector 0.896,2.615 3.146,2.896 2.25,0.281 10 false from Engine Stop and Start ECU*2 0.844,3.771 3.25,4.167 2.406,0.396 10 false from Engine Stop and Start ECU*2 0.885,4.958 3.302,5.365 2.417,0.406 10 false from Engine Stop and Start ECU*2 1.542,0.344 2.156,0.542 0.615,0.198 10 false 1 1.542,0.854 2.156,1.052 0.615,0.198 10 false 2 5.375,0.333 5.99,0.531 0.615,0.198 10 false 40 5.365,0.875 5.979,1.073 0.615,0.198 10 false 18 5.438,2 6.052,2.198 0.615,0.198 10 false 1 5.396,2.51 6.01,2.708 0.615,0.198 10 false 19 5.448,3.146 6.063,3.344 0.615,0.198 10 false 3 5.396,4.313 6.01,4.51 0.615,0.198 10 false 21 5.396,5.292 6.01,5.49 0.615,0.198 10 false 20 5.448,5.698 6.063,5.896 0.615,0.198 10 false 2 5.635,0.458 6.25,0.656 0.615,0.198 10 false CANH 5.635,0.969 6.25,1.167 0.615,0.198 10 false CANL 5.635,2.104 6.25,2.302 0.615,0.198 10 false +B 5.635,2.604 6.25,2.802 0.615,0.198 10 false +B2 5.646,3.24 6.26,3.438 0.615,0.198 10 false ACC 5.625,4.417 6.24,4.615 0.615,0.198 10 false IG 5.615,5.396 6.229,5.594 0.615,0.198 10 false GND2 5.646,5.802 6.26,6 0.615,0.198 10 false GND1 5.323,6.208 5.938,6.406 0.615,0.198 10 false N151 5.344,6.385 6.75,6.667 1.406,0.281 10 false Parking Assist ECU 4.458,3.646 5.073,3.844 0.615,0.198 10 false *2 4.479,2.5 5.094,2.698 0.615,0.198 10 false *2 4.438,4.833 5.052,5.031 0.615,0.198 10 false *2 0.344,5.885 2.635,6.135 2.292,0.25 10 false *1: w/o Stop and Start System 0.344,6.229 2.635,6.479 2.292,0.25 10 false *2: w/ Stop and Start System 3.708,3.083 4.688,3.333 0.979,0.25 10 false ECU-ACC*1 3.604,1.927 4.583,2.177 0.979,0.25 10 false ECU-B NO.3*1 3.531,4.271 4.708,4.531 1.177,0.26 10 false ECU-IG1 NO.3*1 1.583,4.438 3.344,4.656 1.76,0.219 10 false from IG1 NO.1 Relay*1 1.885,3.25 3.104,3.469 1.219,0.219 10 false from ACC Relay*1 2.083,2.104 3.302,2.323 1.219,0.219 10 false from Battery*1

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>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 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 (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the battery.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE

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>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 (PARKING ASSIST ECU BRANCH WIRE)
a.

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


b.
C324422C04
1.385,0.146 1.885,0.365 0.5,0.219 2.677,1.781 2.844,1.781 2.844,1.781 2.844,1.198 true 2.688,0.417 2.854,0.417 2.854,0.417 2.854,1 true 0.063,0.042 0.375,0.24 0.313,0.198 10 false *a 2.271,1.698 2.719,1.938 0.448,0.24 10 false CANH 2.313,0.344 2.76,0.583 0.448,0.24 10 false CANL 1.469,0.167 1.917,0.406 0.448,0.24 10 false N151
*a Front view of wire harness connector
(to Parking Assist ECU)


Disconnect the N151 parking assist ECU connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N151-40 (CANH) - N151-18 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK VEHICLE TYPE

NG

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR

2.CHECK VEHICLE TYPE
a.

Check for vehicle type.


Result:
Result Proceed to
w/ Stop and Start System A
w/o Stop and Start System B



A

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

B

4.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
3.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C324422C05
1.385,0.146 1.885,0.365 0.5,0.219 0.5,0.333 0.667,0.333 0.667,0.333 0.688,1.01 true 0.271,0.646 0.469,0.646 0.469,0.646 0.542,1.021 true 1,0.417 0.833,0.417 0.833,0.417 0.792,1.031 true 0.417,1.583 0.583,1.583 0.583,1.583 0.583,1.167 true 0.542,1.833 0.708,1.833 0.708,1.833 0.708,1.167 true 0.979,1.833 0.813,1.833 0.813,1.833 0.813,1.167 true 0.063,0.042 0.375,0.24 0.313,0.198 10 false *a 0.125,1.5 0.573,1.74 0.448,0.24 10 false +B2 1.469,0.167 1.917,0.406 0.448,0.24 10 false N151 0.063,0.563 0.51,0.802 0.448,0.24 10 false +B 1.052,0.344 1.5,0.583 0.448,0.24 10 false ACC 0.104,0.271 0.552,0.51 0.448,0.24 10 false GND1 0.135,1.76 0.583,2 0.448,0.24 10 false GND2 1.021,1.75 1.469,1.99 0.448,0.24 10 false IG
*a Front view of wire harness connector
(to Parking Assist ECU)


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

Standard Resistance:
Tester Connection Condition Specified Condition
N151-2 (GND1) - Body ground Always Below 1 Ω
N151-20 (GND2) - Body ground Always 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
N151-1 (+B) - Body ground Always 10 to 14 V
N151-19 (+B2) - Body ground Always 10 to 14 V
N151-3 (ACC) - Body ground Ignition switch ON 10 to 14 V
N151-21 (IG) - Body ground Ignition switch ON 10 to 16.5 V



Result:
Proceed to
OK
NG



OK

REPLACE PARKING ASSIST ECU

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING ASSIST ECU>REMOVAL


NG

GO TO STOP AND START SYSTEM

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>Backup Boost Converter Circuit


4.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C324422C05
1.385,0.146 1.885,0.365 0.5,0.219 0.5,0.333 0.667,0.333 0.667,0.333 0.688,1.01 true 0.271,0.646 0.469,0.646 0.469,0.646 0.542,1.021 true 1,0.417 0.833,0.417 0.833,0.417 0.792,1.031 true 0.417,1.583 0.583,1.583 0.583,1.583 0.583,1.167 true 0.542,1.833 0.708,1.833 0.708,1.833 0.708,1.167 true 0.979,1.833 0.813,1.833 0.813,1.833 0.813,1.167 true 0.063,0.042 0.375,0.24 0.313,0.198 10 false *a 0.125,1.5 0.573,1.74 0.448,0.24 10 false +B2 1.469,0.167 1.917,0.406 0.448,0.24 10 false N151 0.063,0.563 0.51,0.802 0.448,0.24 10 false +B 1.052,0.344 1.5,0.583 0.448,0.24 10 false ACC 0.104,0.271 0.552,0.51 0.448,0.24 10 false GND1 0.135,1.76 0.583,2 0.448,0.24 10 false GND2 1.021,1.75 1.469,1.99 0.448,0.24 10 false IG
*a Front view of wire harness connector
(to Parking Assist ECU)


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

Standard Resistance:
Tester Connection Condition Specified Condition
N151-2 (GND1) - Body ground Always Below 1 Ω
N151-20 (GND2) - Body ground Always 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
N151-1 (+B) - Body ground Always 11 to 14 V
N151-19 (+B2) - Body ground Always 11 to 14 V
N151-3 (ACC) - Body ground Ignition switch ON 11 to 14 V
N151-21 (IG) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE PARKING ASSIST ECU

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>PARKING ASSIST ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR