NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): Check Bus 2 Line; 2023 - 2026 MY Corolla Corolla HV [09/2022 - ]

Last Modified: 08-22-2025	6.11:8.1.0	Doc ID: RM10000000259R5
Model Year Start: 2023	Model: Corolla	Prod Date Range: [09/2022 - ]
Title: NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): Check Bus 2 Line; 2023 - 2026 MY Corolla Corolla HV [09/2022 - ]

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 display communication stop history on the "Detail" screen.	CAN main bus line, CAN branch line or connector Central gateway ECU (network gateway ECU) Inverter with converter assembly Battery ECU assembly Hybrid vehicle control ECU ECM No. 14 CAN junction connector

WIRING DIAGRAM

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 (-) 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 here
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 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
Before replacing the hybrid vehicle control ECU, refer to Registration.
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 (-) auxiliary battery terminal.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-26 (CA4H) - I173-25 (CA4L)	Cable disconnected from negative (-) auxiliary battery terminal	Below 70 Ω

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

NG

OK

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
I173-26 (CA4H) - I173-25 (CA4L)	Cable disconnected from negative (-) auxiliary battery terminal	54 Ω or higher

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

NG

OK

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

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

*1

DLC3

-

-

*a

Component with harness connected

(Central Gateway ECU (Network Gateway ECU))

-

-

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-26 (CA4H) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
I173-25 (CA4L) - I26-16 (BAT)		6 kΩ or higher

NG

OK

4.	CHECK FOR SHORT TO GND IN CAN BUS LINE

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

*1

DLC3

-

-

*a

Component with harness connected

(Central Gateway ECU (Network Gateway ECU))

-

-

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-26 (CA4H) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
I173-25 (CA4L) - I26-4 (CG)		200 Ω or higher

OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

NG

5.	CHECK FOR SHORT TO GND IN CAN BUS LINE (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the O192 battery ECU assembly connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
O192-8 (CA2L) - I26-4 (CG)		200 Ω or higher

NG

OK

6.	CHECK FOR SHORT TO GND IN CAN BUS LINE (BATTERY ECU ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to No. 14 CAN Junction Connector

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-20 (C2HB) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
O192-19 (C2LB) - I26-4 (CG)		200 Ω or higher

OK

REPLACE BATTERY ECU ASSEMBLY

NG

7.	CHECK FOR SHORT TO GND IN CAN BUS LINE (BATTERY ECU ASSEMBLY - 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.

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
O192-8 (CA2L) - I26-4 (CG)		200 Ω or higher

OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

8.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

(a) Disconnect the I223 No. 14 CAN junction connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-4 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
I223-8 (CANL) - I26-4 (CG)		200 Ω or higher

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

OK

9.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
I223-6 (CANL) - I26-4 (CG)		200 Ω or higher

NG

OK

10.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Inverter with Converter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-1 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
I223-5 (CANL) - I26-4 (CG)		200 Ω or higher

OK

REPLACE NO. 14 CAN JUNCTION CONNECTOR

NG

11.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the I3 hybrid vehicle control ECU connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
I223-6 (CANL) - I26-4 (CG)		200 Ω or higher

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

12.	CHECK FOR SHORT TO GND IN CAN BUS LINE (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

(a) Disconnect the A155 inverter with converter assembly connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to No. 14 CAN Junction Connector

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-5 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A155-6 (CANL) - I26-4 (CG)		200 Ω or higher

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

OK

13.	CHECK FOR SHORT TO GND IN CAN BUS LINE (INVERTER WITH CONVERTER ASSEMBLY - ECM)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A155-14 (CADL) - I26-4 (CG)		200 Ω or higher

OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

NG

14.	CHECK FOR SHORT TO GND IN CAN BUS LINE (INVERTER WITH CONVERTER ASSEMBLY - ECM)

(a) Disconnect the A46 ECM connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A155-14 (CADL) - I26-4 (CG)		200 Ω or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - ECM)

15.	CHECK FOR SHORT TO +B IN CAN BUS LINE (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the O192 battery ECU assembly connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
O192-8 (CA2L) - I26-16 (BAT)		6 kΩ or higher

NG

OK

16.	CHECK FOR SHORT TO +B IN CAN BUS LINE (BATTERY ECU ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to No. 14 CAN Junction Connector

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-20 (C2HB) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
O192-19 (C2LB) - I26-16 (BAT)		6 kΩ or higher

OK

REPLACE BATTERY ECU ASSEMBLY

NG

17.	CHECK FOR SHORT TO +B IN CAN BUS LINE (BATTERY ECU ASSEMBLY - 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.

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
O192-8 (CA2L) - I26-16 (BAT)		6 kΩ or higher

OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

18.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

(a) Disconnect the I223 No. 14 CAN junction connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-4 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
I223-8 (CANL) - I26-16 (BAT)		6 kΩ or higher

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

OK

19.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
I223-6 (CANL) - I26-16 (BAT)		6 kΩ or higher

NG

OK

20.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Inverter with Converter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-1 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
I223-5 (CANL) - I26-16 (BAT)		6 kΩ or higher

OK

REPLACE NO. 14 CAN JUNCTION CONNECTOR

NG

21.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the I3 hybrid vehicle control ECU connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
I223-6 (CANL) - I26-16 (BAT)		6 kΩ or higher

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

22.	CHECK FOR SHORT TO +B IN CAN BUS LINE (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

(a) Disconnect the A155 inverter with converter assembly connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to No. 14 CAN Junction Connector

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-5 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A155-6 (CANL) - I26-16 (BAT)		6 kΩ or higher

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

OK

23.	CHECK FOR SHORT TO +B IN CAN BUS LINE (INVERTER WITH CONVERTER ASSEMBLY - ECM)

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A155-14 (CADL) - I26-16 (BAT)		6 kΩ or higher

OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

NG

24.	CHECK FOR SHORT TO +B IN CAN BUS LINE (INVERTER WITH CONVERTER ASSEMBLY - ECM)

(a) Disconnect the A46 ECM connector.

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

*1

DLC3

-

-

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A155-14 (CADL) - I26-16 (BAT)		6 kΩ or higher

OK

REPLACE ECM

NG

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - ECM)

25.	CHECK FOR SHORT IN CAN BUS LINES (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

(a) Disconnect the O192 battery ECU assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - O192-8 (CA2L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

NG

OK

26.	CHECK FOR SHORT IN CAN BUS LINES (BATTERY ECU ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-20 (C2HB) - O192-19 (C2LB)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to No. 14 CAN Junction Connector

OK

REPLACE BATTERY ECU ASSEMBLY

NG

27.	CHECK FOR SHORT IN CAN BUS LINES (BATTERY ECU ASSEMBLY - 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.

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - O192-8 (CA2L)	Cable disconnected from negative (-) auxiliary battery terminal	1 MΩ or higher

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

28.	CHECK FOR SHORT IN CAN BUS LINES (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

(a) Reconnect the O192 battery ECU assembly connector.

(b) Disconnect the I223 No. 14 CAN junction connector.

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

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-4 (CANH) - I223-8 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

OK

29.	CHECK FOR SHORT IN CAN BUS LINES (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

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

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-2 (CANH) - I223-6 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

NG

OK

30.	CHECK FOR SHORT IN CAN BUS LINES (NO. 14 CAN JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY)

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

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Inverter with Converter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-1 (CANH) - I223-5 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

OK

REPLACE NO. 14 CAN JUNCTION CONNECTOR

NG

31.	CHECK FOR SHORT IN CAN BUS LINES (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the I3 hybrid vehicle control ECU connector.

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

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-2 (CANH) - I223-6 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	1 MΩ or higher

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

32.	CHECK FOR SHORT IN CAN BUS LINES (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

(a) Reconnect the I223 No. 14 CAN junction connector.

(b) Disconnect the A155 inverter with converter assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-5 (CANH) - A155-6 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to No. 14 CAN Junction Connector

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

OK

33.	CHECK FOR SHORT IN CAN BUS LINES (INVERTER WITH CONVERTER ASSEMBLY - ECM)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - A155-14 (CADL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

NG

34.	CHECK FOR SHORT IN CAN BUS LINES (INVERTER WITH CONVERTER ASSEMBLY - ECM)

(a) Disconnect the A46 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - A155-14 (CADL)	Cable disconnected from negative (-) auxiliary battery terminal	1 MΩ or higher

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

OK

REPLACE ECM

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - ECM)

35.	CHECK FOR OPEN IN CAN MAIN BUS LINES (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.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I173-26 (CA4H) - I173-25 (CA4L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

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

OK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

NG

36.	CHECK FOR OPEN IN CAN MAIN BUS LINES (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

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

(b) Disconnect the O192 battery ECU assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-9 (CA2H) - O192-8 (CA2L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to Central Gateway ECU (Network Gateway ECU)

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (BATTERY ECU ASSEMBLY - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU))

OK

37.	CHECK FOR OPEN IN CAN MAIN BUS LINES (BATTERY ECU ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O192-20 (C2HB) - O192-19 (C2LB)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Battery ECU Assembly)

*b

to No. 14 CAN Junction Connector

OK

REPLACE BATTERY ECU ASSEMBLY

NG

38.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

(a) Reconnect the O192 battery ECU assembly connector.

(b) Disconnect the I223 No. 14 CAN junction connector.

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

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-4 (CANH) - I223-8 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 14 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

OK

39.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 14 CAN JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY)

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

*a

Front view of wire harness connector

(to No. 14 CAN Junction Connector)

*b

to Inverter with Converter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
I223-1 (CANH) - I223-5 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

OK

REPLACE NO. 14 CAN JUNCTION CONNECTOR

NG

40.	CHECK FOR OPEN IN CAN MAIN BUS LINES (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

(a) Reconnect the I223 No. 14 CAN junction connector.

(b) Disconnect the A155 inverter with converter assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-5 (CANH) - A155-6 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to No. 14 CAN Junction Connector

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - NO. 14 CAN JUNCTION CONNECTOR)

OK

41.	CHECK FOR OPEN IN CAN MAIN BUS LINES (INVERTER WITH CONVERTER ASSEMBLY - ECM)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A155-13 (CADH) - A155-14 (CADL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a

Front view of wire harness connector

(to Inverter with Converter Assembly)

*b

to ECM

OK

REPLACE INVERTER WITH CONVERTER ASSEMBLY

NG

42.	CHECK FOR OPEN IN CAN MAIN BUS LINES (ECM)

(a) Reconnect the A155 inverter with converter assembly connector.

(b) Disconnect the A46 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A46-9 (CFDH) - A46-10 (CFDL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a	Front view of wire harness connector (to ECM)

OK

REPLACE ECM

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM - INVERTER WITH CONVERTER ASSEMBLY)