RM36D0EC _57 Power Source / Network _083091 NETWORKING _0694856 CAN COMMUNICATION SYSTEM(for GTMC Made Gasoline Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for GTMC Made Gasoline Model)  Millimeter Wave Radar Sensor Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
Millimeter Wave Radar Sensor Communication Stop Mode Communication stop for "Front Radar" is indicated on the "Communication Bus Check" screen of the GTS.
Click here(Click here)
·

Millimeter wave radar sensor assembly branch wire or connector

·

Power source circuit of millimeter wave radar sensor assembly

·

Millimeter wave radar sensor assembly ground circuit

·

Millimeter wave radar sensor assembly



WIRING DIAGRAM

C421797E01
5.604,0.5 6.219,0.698 0.615,0.198 10 false CA2H 5.615,1.156 6.229,1.354 0.615,0.198 10 false CA2L 5.604,3.458 6.219,3.656 0.615,0.198 10 false SGND 5.615,2.49 6.229,2.688 0.615,0.198 10 false IGB 5.365,2.313 5.979,2.51 0.615,0.198 10 false 8 5.365,3.333 5.979,3.531 0.615,0.198 10 false 1 5.365,1.01 5.979,1.208 0.615,0.198 10 false 2 5.365,0.427 5.979,0.625 0.615,0.198 10 false 3 1.823,0.417 2.438,0.615 0.615,0.198 10 false 2 1.823,1.021 2.438,1.219 0.615,0.198 10 false 12 5.26,3.875 5.875,4.073 0.615,0.198 10 false B9 5.26,4.063 6.667,4.542 1.406,0.479 10 false Millimeter Wave Radar Sensor Assembly 0.323,1.406 2.656,1.688 2.333,0.281 10 false No. 2 CAN Junction Connector 0.313,1.229 0.927,1.427 0.615,0.198 10 false G102 1,2.427 3.406,2.844 2.406,0.417 10 false from Engine Stop and Start ECU

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 GTMC Made Gasoline 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 (-) 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.

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 GTMC Made Gasoline Model)>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 (MILLIMETER WAVE RADAR SENSOR ASSEMBLY BRANCH WIRE)
a.

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


b.
C346951C93
1.49,0.156 1.854,0.365 0.365,0.208 2.365,0.396 2.198,0.396 2.198,0.396 1.792,1.073 true 0.917,0.396 1.115,0.396 1.115,0.396 1.604,1.073 true 0.115,0.083 0.427,0.24 0.313,0.156 10 false *a 1.594,0.188 1.927,0.427 0.333,0.24 10 false B9 2.458,0.333 3.063,0.573 0.604,0.24 10 false CA2H 0.479,0.333 0.938,0.531 0.458,0.198 10 false CA2L
*a Front view of wire harness connector
(to Millimeter Wave Radar Sensor Assembly)


Disconnect the millimeter wave radar sensor assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B9-3 (CA2H) - B9-2 (CA2L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

NG

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR

2.CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
a.
C346951C94
1.49,0.156 1.854,0.365 0.365,0.208 2.49,2 2.313,2 2.313,2 1.979,1.344 true 0.917,0.396 1.115,0.396 1.115,0.396 1.406,1.073 true 0.115,0.083 0.427,0.24 0.313,0.156 10 false *a 1.583,0.188 1.917,0.458 0.333,0.271 10 false B9 2.542,1.938 2.969,2.146 0.427,0.208 10 false IGB 0.51,0.333 1.042,0.542 0.531,0.208 10 false SGND
*a Front view of wire harness connector
(to Millimeter Wave Radar Sensor Assembly)


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

Standard Resistance:
Tester Connection Condition Specified Condition
B9-1 (SGND) - 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 Switch Condition Specified Condition
B9-8 (IGB) - Body ground Ignition switch ON 10.5 to 16 V
Ignition switch off Below 1 V



Result:
Result Proceed to
OK A
NG (IGB terminal) B
NG (Other terminal) C



A

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Click hereEngine / Hybrid System>CRUISE CONTROL>MILLIMETER WAVE RADAR SENSOR>REMOVAL


B

GO TO STOP AND START SYSTEM

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


C

REPAIR OR REPLACE HARNESS OR CONNECTOR