RM36D0EC _57 Power Source / Network _083091 NETWORKING _0694854 CAN COMMUNICATION SYSTEM(for SFTM Made Gasoline Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for SFTM Made Gasoline Model)  Check Bus 2 Line  


DESCRIPTION

Symptom Trouble Area
There are ECUs or sensors that display a communication stop on the bus diagnostic screen. Or, there are ECUs or sensors that store a communication stop history on the "Detail" screen.
·

CAN bus lines or connector

·

Engine stop and start ECU

·

Central gateway ECU (network gateway ECU)

·

ECM

·

No. 9 CAN junction connector



WIRING DIAGRAM

C503765E06
2.844,3.083 3.458,3.281 0.615,0.198 10 false G159 2.865,3.323 4.104,4.031 1.24,0.708 10 false No. 9 CAN Junction Connector 3.125,1.01 3.74,1.208 0.615,0.198 10 false 17 3.167,0.625 3.781,0.823 0.615,0.198 10 false 6 4.115,1 4.729,1.198 0.615,0.198 10 false 12 4.104,0.604 4.719,0.802 0.615,0.198 10 false 1 4.115,2.75 4.729,2.948 0.615,0.198 10 false 14 4.125,2.344 4.74,2.542 0.615,0.198 10 false 3 6.104,3.219 6.667,3.458 0.563,0.24 10 false A116 6.125,3.417 6.677,3.813 0.552,0.396 10 false ECM 5.104,1.26 5.719,1.458 0.615,0.198 10 false G174 5.094,1.49 7.01,1.979 1.917,0.49 10 false Central Gateway ECU (Network Gateway ECU) 5.677,0.615 6.292,0.813 0.615,0.198 10 false 26 5.677,1.021 6.292,1.219 0.615,0.198 10 false 25 6,0.635 6.615,0.833 0.615,0.198 10 false CA4H 6.042,1.198 6.656,1.396 0.615,0.198 10 false CA4L 6.063,2.396 6.677,2.594 0.615,0.198 10 false CANH 6.052,2.927 6.667,3.125 0.615,0.198 10 false CANL 5.76,2.344 6.375,2.542 0.615,0.198 10 false 4 5.781,2.76 6.396,2.958 0.615,0.198 10 false 5 1.385,0.625 2,0.823 0.615,0.198 10 false 13 1.406,1.01 2.021,1.208 0.615,0.198 10 false 14 0.906,0.74 1.521,0.938 0.615,0.198 10 false CANH 0.906,1.135 1.521,1.333 0.615,0.198 10 false CANL 0.177,1.271 1.365,1.479 1.188,0.208 10 false A32 0.198,1.5 2.25,1.792 2.052,0.292 10 false 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 SFTM 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 SFTM 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
NOTICE:

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.


HINT:

Operating the ignition switch, any other switches or door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.


a.

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


b.
C502817C12
1.51,0.073 2.01,0.344 0.5,0.271 1.167,1.917 1.417,1.917 1.417,1.917 1.99,0.885 true 2.438,1.938 2.281,1.938 2.281,1.938 2.115,0.875 true 0.115,0.073 0.427,0.271 0.313,0.198 10 false *a 1.573,0.125 2.031,0.323 0.458,0.198 10 false G174 0.75,1.844 1.146,2.031 0.396,0.188 10 false CA4H 2.583,1.833 3.021,2.063 0.438,0.229 10 false CA4L
*a Component with harness connected
(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
G174-26 (CA4H) - G174-25 (CA4L) Cable disconnected from negative (-) battery terminal Below 70 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK FOR SHORT IN CAN BUS WIRES

NG

23.CHECK FOR OPEN IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
2.CHECK FOR SHORT IN CAN BUS WIRES
a.
C502817C12
1.51,0.073 2.01,0.344 0.5,0.271 1.167,1.917 1.417,1.917 1.417,1.917 1.99,0.885 true 2.438,1.938 2.281,1.938 2.281,1.938 2.115,0.875 true 0.115,0.073 0.427,0.271 0.313,0.198 10 false *a 1.573,0.125 2.031,0.323 0.458,0.198 10 false G174 0.75,1.844 1.146,2.031 0.396,0.188 10 false CA4H 2.583,1.833 3.021,2.063 0.438,0.229 10 false CA4L
*a Component with harness connected
(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
G174-26 (CA4H) - G174-25 (CA4L) Cable disconnected from negative (-) battery terminal 54 Ω or higher



Result:
Proceed to
OK
NG



OK

3.CHECK FOR SHORT TO B+ IN CAN BUS WIRE

NG

17.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
3.CHECK FOR SHORT TO B+ IN CAN BUS WIRE
a.
C502817C12
1.51,0.073 2.01,0.344 0.5,0.271 1.167,1.917 1.417,1.917 1.417,1.917 1.99,0.885 true 2.438,1.938 2.281,1.938 2.281,1.938 2.115,0.875 true 0.115,0.073 0.427,0.271 0.313,0.198 10 false *a 1.573,0.125 2.031,0.323 0.458,0.198 10 false G174 0.75,1.844 1.146,2.031 0.396,0.188 10 false CA4H 2.583,1.833 3.021,2.063 0.438,0.229 10 false CA4L
*a Component with harness connected
(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
G174-26 (CA4H) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G174-25 (CA4L) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

4.CHECK FOR SHORT TO GND IN CAN BUS WIRE

NG

11.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
4.CHECK FOR SHORT TO GND IN CAN BUS WIRE
a.
C502817C12
1.51,0.073 2.01,0.344 0.5,0.271 1.167,1.917 1.417,1.917 1.417,1.917 1.99,0.885 true 2.438,1.938 2.281,1.938 2.281,1.938 2.115,0.875 true 0.115,0.073 0.427,0.271 0.313,0.198 10 false *a 1.573,0.125 2.031,0.323 0.458,0.198 10 false G174 0.75,1.844 1.146,2.031 0.396,0.188 10 false CA4H 2.583,1.833 3.021,2.063 0.438,0.229 10 false CA4L
*a Component with harness connected
(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
G174-26 (CA4H) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G174-25 (CA4L) - Body ground



Result:
Proceed to
OK
NG



OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

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


NG

5.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
5.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G159 No. 9 CAN junction connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G159-12 (CANL) - Body ground



Result:
Proceed to
OK
NG



OK

6.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)

NG

8.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
6.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G159-14 (CANL) - Body ground



Result:
Proceed to
OK
NG



OK

7.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)

NG

9.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
7.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
a.

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

C476562C23
1.052,1.24 1.458,1.49 0.406,0.25 4.552,2.25 4.385,2.25 4.385,2.25 3.615,1.729 true 4.615,0.594 4.448,0.594 4.448,0.594 3.625,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.688,0.531 5.354,0.771 0.667,0.24 10 false CANH*b 4.625,2.177 5.292,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Engine Stop and Start ECU


Standard Resistance:
Tester Connection Condition Specified Condition
G159-6 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G159-17 (CANL) - Body ground



Result:
Proceed to
OK
NG



OK

REPLACE NO. 9 CAN JUNCTION CONNECTOR

NG

10.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
8.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G174 central gateway ECU (network gateway ECU) connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G159-12 (CANL) - Body ground



Result:
Proceed to
OK
NG



OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

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


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

9.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

Disconnect the A116 ECM connector.


b.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G159-14 (CANL) - Body ground



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - ECM)

10.CHECK FOR SHORT TO GND IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
a.

Disconnect the A32 engine stop and start ECU connector.


b.

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

C476562C23
1.052,1.24 1.458,1.49 0.406,0.25 4.552,2.25 4.385,2.25 4.385,2.25 3.615,1.729 true 4.615,0.594 4.448,0.594 4.448,0.594 3.625,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.688,0.531 5.354,0.771 0.667,0.24 10 false CANH*b 4.625,2.177 5.292,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Engine Stop and Start ECU


Standard Resistance:
Tester Connection Condition Specified Condition
G159-6 (CANH) - Body ground Cable disconnected from negative (-) battery terminal 200 Ω or higher
G159-17 (CANL) - Body ground



Result:
Proceed to
OK
NG



OK

REPLACE ENGINE STOP AND START ECU

Click hereEngine / Hybrid System>STOP AND START>ENGINE STOP AND START ECU>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)

11.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G159 No. 9 CAN junction connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G159-12 (CANL) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

12.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)

NG

14.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
12.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G159-14 (CANL) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

13.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)

NG

15.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
13.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
a.

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

C476562C23
1.052,1.24 1.458,1.49 0.406,0.25 4.552,2.25 4.385,2.25 4.385,2.25 3.615,1.729 true 4.615,0.594 4.448,0.594 4.448,0.594 3.625,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.688,0.531 5.354,0.771 0.667,0.24 10 false CANH*b 4.625,2.177 5.292,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Engine Stop and Start ECU


Standard Resistance:
Tester Connection Condition Specified Condition
G159-6 (CANH) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G159-17 (CANL) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

REPLACE NO. 9 CAN JUNCTION CONNECTOR

NG

16.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
14.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G174 central gateway ECU (network gateway ECU) connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G159-12 (CANL) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

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


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

15.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

Disconnect the A116 ECM connector.


b.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G159-14 (CANL) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - ECM)

16.CHECK FOR SHORT TO B+ IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
a.

Disconnect the A32 engine stop and start ECU connector.


b.

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

C476562C23
1.052,1.24 1.458,1.49 0.406,0.25 4.552,2.25 4.385,2.25 4.385,2.25 3.615,1.729 true 4.615,0.594 4.448,0.594 4.448,0.594 3.625,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.688,0.531 5.354,0.771 0.667,0.24 10 false CANH*b 4.625,2.177 5.292,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Engine Stop and Start ECU


Standard Resistance:
Tester Connection Condition Specified Condition
G159-6 (CANH) - Positive (+) battery terminal Cable disconnected from negative (-) battery terminal 6 kΩ or higher
G159-17 (CANL) - Positive (+) battery terminal



Result:
Proceed to
OK
NG



OK

REPLACE ENGINE STOP AND START ECU

Click hereEngine / Hybrid System>STOP AND START>ENGINE STOP AND START ECU>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)

17.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G159 No. 9 CAN junction connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - G159-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

18.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ECM)

NG

20.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
18.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - G159-14 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

19.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)

NG

21.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ECM)
19.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
a.

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

C476562C23
1.052,1.24 1.458,1.49 0.406,0.25 4.552,2.25 4.385,2.25 4.385,2.25 3.615,1.729 true 4.615,0.594 4.448,0.594 4.448,0.594 3.625,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.688,0.531 5.354,0.771 0.667,0.24 10 false CANH*b 4.625,2.177 5.292,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Engine Stop and Start ECU


Standard Resistance:
Tester Connection Condition Specified Condition
G159-6 (CANH) - G159-17 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher



Result:
Proceed to
OK
NG



OK

REPLACE NO. 9 CAN JUNCTION CONNECTOR

NG

22.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
20.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G174 central gateway ECU (network gateway ECU) connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - G159-12 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher



Result:
Proceed to
OK
NG



OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

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


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

21.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

Disconnect the A116 ECM connector.


b.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - G159-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - ECM)

22.CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)
a.

Disconnect the A32 engine stop and start ECU connector.


b.

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

C476562C23
1.052,1.24 1.458,1.49 0.406,0.25 4.552,2.25 4.385,2.25 4.385,2.25 3.615,1.729 true 4.615,0.594 4.448,0.594 4.448,0.594 3.625,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.688,0.531 5.354,0.771 0.667,0.24 10 false CANH*b 4.625,2.177 5.292,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Engine Stop and Start ECU


Standard Resistance:
Tester Connection Condition Specified Condition
G159-6 (CANH) - G159-17 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher



Result:
Proceed to
OK
NG



OK

REPLACE ENGINE STOP AND START ECU

Click hereEngine / Hybrid System>STOP AND START>ENGINE STOP AND START ECU>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - ENGINE STOP AND START ECU)

23.CHECK FOR OPEN IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))
a.

Disconnect the G159 No. 9 CAN junction connector.


b.

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

C476562C22
1.052,1.24 1.458,1.49 0.406,0.25 3.656,2.271 3.49,2.271 3.49,2.271 2.719,1.74 true 3.698,0.594 3.531,0.594 3.531,0.594 2.708,1.375 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 3.771,0.531 4.438,0.771 0.667,0.24 10 false CANH*b 3.708,2.188 4.375,2.427 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to Central Gateway ECU (Network Gateway ECU)


Standard Resistance:
Tester Connection Condition Specified Condition
G159-1 (CANH) - G159-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

24.CHECK FOR OPEN IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)

NG

25.CHECK FOR OPEN IN CAN BUS WIRE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 9 CAN JUNCTION CONNECTOR)
24.CHECK FOR OPEN IN CAN BUS WIRE (NO. 9 CAN JUNCTION CONNECTOR - ECM)
a.

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

C476562C24
1.052,1.24 1.458,1.49 0.406,0.25 3.99,2.26 3.823,2.26 3.823,2.26 3.052,1.74 true 4.052,0.604 3.885,0.604 3.885,0.604 3.073,1.396 true 0.083,0.063 0.396,0.26 0.313,0.198 10 false *a 1.094,1.281 1.594,1.521 0.5,0.24 10 false G159 4.125,0.531 4.792,0.771 0.667,0.24 10 false CANH*b 4.052,2.177 4.719,2.417 0.667,0.24 10 false CANL*b
*a Front view of wire harness connector
(to No. 9 CAN Junction Connector) 		*b to ECM


Standard Resistance:
Tester Connection Condition Specified Condition
G159-3 (CANH) - G159-14 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

REPLACE NO. 9 CAN JUNCTION CONNECTOR

NG

26.CHECK FOR OPEN IN CAN BUS WIRE (ECM - NO. 9 CAN JUNCTION CONNECTOR)
25.CHECK FOR OPEN IN CAN BUS WIRE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 9 CAN JUNCTION CONNECTOR)
a.

Reconnect the G159 No. 9 CAN junction connector.


b.

Disconnect the G174 central gateway ECU (network gateway ECU) connector.

C422308C55
0.625,0.792 1.125,1.042 0.5,0.25 2.948,0.917 2.948,1.583 2.948,1.583 2.781,1.583 true 3.094,0.917 3.094,1.583 3.094,1.583 3.25,1.583 true 0.115,0.115 0.427,0.313 0.313,0.198 10 false *a 0.698,0.833 1.135,1.052 0.438,0.219 10 false G174 3.313,1.521 3.927,1.719 0.615,0.198 10 false CA4H 2.427,1.51 3.042,1.708 0.615,0.198 10 false CA4L
*a Front view of wire harness connector
(to Central Gateway ECU [Network Gateway ECU]) 		- -



c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
G174-26 (CA4H) - G174-25 (CA4L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

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


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 9 CAN JUNCTION CONNECTOR)

26.CHECK FOR OPEN IN CAN BUS WIRE (ECM - NO. 9 CAN JUNCTION CONNECTOR)
a.

Reconnect the G159 No. 9 CAN junction connector.


b.

Disconnect the A116 ECM connector.


c.
C502865C06
1.417,0.167 1.917,0.427 0.5,0.26 1.26,1.406 0.927,0.531 0.927,0.531 0.719,0.531 true 1.323,1.396 1.042,0.281 1.042,0.281 0.865,0.281 true 1.49,0.208 1.948,0.406 0.458,0.198 10 false A116 0.104,0.063 0.563,0.26 0.458,0.198 10 false *a 0.458,0.177 0.917,0.375 0.458,0.198 10 false CANL 0.292,0.438 0.75,0.635 0.458,0.198 10 false CANH
*a Front view of wire harness connector
(to ECM)


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

Standard Resistance:
Tester Connection Condition Specified Condition
A116-4 (CANH) - A116-5 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE CAN BUS WIRE OR CONNECTOR (ECM - NO. 9 CAN JUNCTION CONNECTOR)