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

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


DESCRIPTION

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

Clearance warning ECU assembly branch line or connector

·

Power source circuit of clearance warning ECU assembly

·

Clearance warning ECU assembly ground circuit

·

Clearance warning ECU assembly



WIRING DIAGRAM

C416185E04
0.198,1.823 0.948,2.156 0.75,0.333 10 false I232 5.521,4.052 7.042,4.5 1.521,0.448 10 false Clearance Warning ECU Assembly 5.24,4.052 5.698,4.25 0.458,0.198 10 false I24 5.281,0.75 5.74,0.948 0.458,0.198 10 false 17 5.281,1.344 5.74,1.542 0.458,0.198 10 false 18 5.615,0.865 6.073,1.063 0.458,0.198 10 false R1 1.677,1.344 2.135,1.542 0.458,0.198 10 false 17 1.708,0.75 2.167,0.948 0.458,0.198 10 false 6 5.615,1.458 6.073,1.656 0.458,0.198 10 false R2 5.615,2.469 6.073,2.667 0.458,0.198 10 false IG 5.615,3.063 6.073,3.26 0.458,0.198 10 false E 0.531,1.823 2.771,2.115 2.24,0.292 10 false No. 42 Junction Connector 5.302,2.948 5.76,3.146 0.458,0.198 10 false 31 5.365,2.354 5.823,2.552 0.458,0.198 10 false 1 3.677,2.323 4.813,2.573 1.135,0.25 10 false ECU-IGR NO. 3 1.656,2.469 3.417,2.896 1.76,0.427 10 false from IGR NO. 1 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 HV Model)>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 (-) auxiliary 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 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 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 HV Model)>DIAGNOSIS SYSTEM

·

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



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 (CLEARANCE WARNING ECU ASSEMBLY BRANCH LINE)
a.

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


b.

Disconnect the I24 clearance warning ECU assembly connector.


c.
C349834C54
1.49,0.188 1.854,0.438 0.365,0.25 2.948,1.146 2.948,0.302 2.948,0.302 2.802,0.302 true 2.823,1.156 2.823,0.531 2.823,0.531 2.677,0.531 true 0.135,0.083 0.448,0.281 0.313,0.198 10 false *a 1.594,0.229 2.479,0.76 0.885,0.531 10 false I24 2.458,0.479 2.771,0.677 0.313,0.198 10 false R1 2.573,0.25 2.885,0.448 0.313,0.198 10 false R2
*a Front view of wire harness connector
(to Clearance Warning ECU Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
I24-17 (R1) - I24-18 (R2) 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 (CLEARANCE WARNING ECU ASSEMBLY)

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C349834C93
1.49,0.188 1.854,0.438 0.365,0.25 1.875,1.354 1.875,1.854 1.875,1.854 2.031,1.854 true 0.479,1.135 0.479,0.51 0.479,0.51 0.604,0.51 true 0.135,0.083 0.448,0.281 0.313,0.198 10 false *a 1.594,0.229 2.031,0.552 0.438,0.323 10 false I24 0.677,0.438 0.99,0.635 0.313,0.198 10 false IG 2.083,1.792 2.396,1.99 0.313,0.198 10 false E
*a Front view of wire harness connector
(to Clearance Warning ECU Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
I24-31 (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
I24-1 (IG) - Body ground Ignition switch ON 11 to 14 V



Result:
Result
OK
NG



OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)