NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): Check Bus 6 Line; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM1000000028AC3
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - 08/2023]
Title: NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): Check Bus 6 Line; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023]

Check Bus 6 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 display communication stop history on the "Detail" screen.	CAN main bus line, CAN branch line or connector Central gateway ECU (network gateway ECU) Tire pressure warning ECU and receiver 4WD ECU Assembly (for G16E-GTS) No. 16 CAN junction connector

WIRING DIAGRAM

except G16E-GTS

for G16E-GTS

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 here
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 1 minute 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 here
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 here
Some parts must be initialized and set when replacing or removing and installing parts.
Click here
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 here

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

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-31 (CA7H) - I173-32 (CA7L)	Cable disconnected from negative (-) battery terminal	Below 70 Ω

*a	Component with harness connected (Central Gateway ECU (Network Gateway ECU))

GO TO STEP 50

2.	CHECK FOR SHORT IN CAN BUS LINES

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-31 (CA7H) - I173-32 (CA7L)	Cable disconnected from negative (-) battery terminal	54 Ω or higher

*a	Component with harness connected (Central Gateway ECU (Network Gateway ECU))

GO TO STEP 35

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

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

DLC3

Component with harness connected

(Central Gateway ECU (Network Gateway ECU))

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-31 (CA7H) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I173-32 (CA7L) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

GO TO STEP 20

4.	CHECK FOR SHORT TO GND IN CAN BUS LINE

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

DLC3

Component with harness connected

(Central Gateway ECU (Network Gateway ECU))

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-31 (CA7H) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I173-32 (CA7L) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

5.	CHECK VEHICLE TYPE

(a) Check vehicle type.

Result	Proceed to
except G16E-GTS	A
for G16E-GTS	B

GO TO STEP 12

6.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I215 No. 16 CAN junction connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I215-7 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

GO TO STEP 9

7.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I215-8 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

GO TO STEP 10

8.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-3 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I215-9 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 11

9.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I215-7 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

10.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I215-8 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

11.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

(a) Disconnect the O170 or O171 tire pressure warning ECU and receiver connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-3 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I215-9 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

for Hatchback
Click here
for Sedan
Click here

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

12.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I189 No. 16 CAN junction connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-6 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

GO TO STEP 16

13.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-7 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

GO TO STEP 17

14.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-4 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-8 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

GO TO STEP 18

15.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to 4WD ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-1 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-5 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 19

16.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-6 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

17.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-7 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

18.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

(a) Disconnect the O170 tire pressure warning ECU and receiver connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-4 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-8 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

19.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

(a) Disconnect the O177 4WD ECU assembly connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to 4WD ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-1 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher
I189-5 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE 4WD ECU ASSEMBLY

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

20.	CHECK VEHICLE TYPE

(a) Check vehicle type.

Result	Proceed to
except G16E-GTS	A
for G16E-GTS	B

GO TO STEP 27

21.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I215 No. 16 CAN junction connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I215-7 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

GO TO STEP 24

22.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I215-8 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

GO TO STEP 25

23.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-3 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I215-9 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 26

24.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I215-7 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

25.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I215-8 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

26.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

(a) Disconnect the O170 or O171 tire pressure warning ECU and receiver connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-3 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I215-9 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

for Hatchback
Click here
for Sedan
Click here

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

27.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I189 No. 16 CAN junction connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-6 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

GO TO STEP 31

28.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-7 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

GO TO STEP 32

29.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-4 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-8 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

GO TO STEP 33

30.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to 4WD ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-1 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-5 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 34

31.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-6 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

32.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-7 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

33.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

(a) Disconnect the O170 tire pressure warning ECU and receiver connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-4 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-8 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

34.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

(a) Disconnect the O177 4WD ECU assembly connector.

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

DLC3

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to 4WD ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-1 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher
I189-5 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) battery terminal	6 kΩ or higher

REPLACE 4WD ECU ASSEMBLY

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

35.	CHECK VEHICLE TYPE

(a) Check vehicle type.

Result	Proceed to
except G16E-GTS	A
for G16E-GTS	B

GO TO STEP 42

36.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I215 No. 16 CAN junction connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I215-7 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

GO TO STEP 39

37.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I215-8 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

GO TO STEP 40

38.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-3 (CANH) - I215-9 (CANL)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 41

39.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I215-7 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

40.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I215-8 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

41.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

(a) Disconnect the O170 or O171 tire pressure warning ECU and receiver connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-3 (CANH) - I215-9 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

for Hatchback
Click here
for Sedan
Click here

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

42.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I189 No. 16 CAN junction connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I189-6 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

GO TO STEP 46

43.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I189-7 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

GO TO STEP 47

44.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-4 (CANH) - I189-8 (CANL)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

GO TO STEP 48

45.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to 4WD ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-1 (CANH) - I189-5 (CANL)	Cable disconnected from negative (-) battery terminal	200 Ω or higher

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 49

46.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I189-6 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

47.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I189-7 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

48.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

(a) Disconnect the O170 tire pressure warning ECU and receiver connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Tire Pressure Warning ECU and Receiver

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-4 (CANH) - I189-8 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU AND RECEIVER)

49.	CHECK FOR SHORT IN CAN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

(a) Disconnect the O177 4WD ECU assembly connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to 4WD ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-1 (CANH) - I189-5 (CANL)	Cable disconnected from negative (-) battery terminal	1 MΩ or higher

REPLACE 4WD ECU ASSEMBLY

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 16 CAN JUNCTION CONNECTOR - 4WD ECU ASSEMBLY)

50.	CHECK VEHICLE TYPE

(a) Check vehicle type.

Result	Proceed to
except G16E-GTS	A
for G16E-GTS	B

GO TO STEP 54

51.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I215 No. 16 CAN junction connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-1 (CANH) - I215-7 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

GO TO STEP 53

52.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I215-2 (CANH) - I215-8 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 53

53.	CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Reconnect the I215 No. 16 CAN junction connector.

(b) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-31 (CA7H) - I173-10 (CAVH)	Cable disconnected from negative (-) battery terminal	Below 1 Ω
I173-32 (CA7L) - I173-11 (CAVL)	Cable disconnected from negative (-) battery terminal	Below 1 Ω

*a	Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU))

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 16 CAN JUNCTION CONNECTOR)

54.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the I189 No. 16 CAN junction connector.

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-2 (CANH) - I189-6 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

GO TO STEP 56

55.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 16 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

Front view of wire harness connector

(to No. 16 CAN Junction Connector)

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I189-3 (CANH) - I189-7 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

REPLACE NO. 16 CAN JUNCTION CONNECTOR

GO TO STEP 56

56.	CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Reconnect the I189 No. 16 CAN junction connector.

(b) Disconnect the I173 central gateway ECU (network gateway ECU) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-31 (CA7H) - I173-10 (CAVH)	Cable disconnected from negative (-) battery terminal	Below 1 Ω
I173-32 (CA7L) - I173-11 (CAVL)	Cable disconnected from negative (-) battery terminal	Below 1 Ω

*a	Front view of wire harness connector (to Central Gateway ECU (Network Gateway ECU))

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 16 CAN JUNCTION CONNECTOR)