Toyota Corolla Cross: Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message (U011187,U01BD87,U115087,U117B87)

Toyota Corolla Cross (2022-2024) Service Manual / Power Source & Network / Networking / Can Communication System (for Hev Model) / Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message (U011187,U01BD87,U115087,U117B87)

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
U011187	Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message	Communication stops between the hybrid vehicle control ECU and the battery ECU assembly.	CAN main/branch bus lines or connector Hybrid vehicle control ECU Battery ECU assembly No. 3 CAN junction connector	DTC Output from Hybrid vehicle control ECU
U01BD87	Lost Communication with DC/DC Converter Control Module "C" Missing Message	Communication stops between the hybrid vehicle control ECU and the hybrid motor control inverter assembly.	CAN main/branch bus lines or connector Hybrid vehicle control ECU Hybrid motor control inverter assembly No. 3 CAN junction connector	DTC Output from Hybrid vehicle control ECU
U115087	Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message	Communication stops between the battery ECU assembly and the hybrid vehicle control ECU.	CAN main/branch bus lines or connector Battery ECU assembly Hybrid vehicle control ECU No. 3 CAN junction connector	DTC Output from Battery ECU assembly
U117B87	Lost Communication with Hybrid/EV Battery Energy Control Module "A" (ch2) Missing Message	Communication stops between the hybrid vehicle control ECU and the battery ECU assembly.	CAN main/branch bus lines or connector Hybrid vehicle control ECU Battery ECU assembly No. 3 CAN junction connector	DTC Output from Hybrid vehicle control ECU

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the hybrid motor control inverter assembly
- Disconnecting the low voltage connector of the HV battery
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
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HINT:

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the hybrid motor control inverter assembly.

*a

Without waiting for 10 minutes

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.
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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 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 (-) auxiliary battery terminal.
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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.

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Some parts must be initialized and set when replacing or removing and installing parts.
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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.
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Before replacing the hybrid vehicle control ECU, refer to Registration.
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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.	RECONFIRM DTC OUTPUT

(a) Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes Powertrain > HV Battery > Trouble Codes

Result	Proceed to
Only DTC U01BD87 is output	A
DTC U011187, P01BD87, P115087 and/or P117B87 are output	B

GO TO STEP 5

2.	CHECK FOR OPEN IN CAN BUS LINES (HYBRID MOTOR CONTROL INVERTER ASSEMBLY BRANCH LINE)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A188-5 (CNH) - A188-4 (CNL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

*a	Front view of wire harness connector (to Hybrid Motor Control Inverter Assembly)

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

3.	CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Reconnect the cable to the negative (-) auxiliary battery terminal.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
A188-3 (IGCT) - Body ground	Ignition switch ON	Same as auxiliary battery voltage

*a	Front view of wire harness connector (to Hybrid Motor Control Inverter Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

4.	CHECK AMD TERMINAL VOLTAGE

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
D1-1 (AMD) - Body ground	Ignition switch off	Same as auxiliary battery voltage

*1	AMD Terminal (Hybrid Motor Control Inverter Assembly Side)
*2	AMD Terminal (No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly Side)
*a	D1-1 (AMD)

REPLACE MG ECU (REPLACE HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

5.	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.

Component with harness connected

(Hybrid Vehicle Control ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I249-9 (CA4H) - I249-22 (CA4L)	Cable disconnected from negative (-) auxiliary battery terminal	Below 70 Ω

GO TO STEP 27

6.	CHECK FOR SHORT IN CAN BUS LINES

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

Component with harness connected

(Hybrid Vehicle Control ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I249-9 (CA4H) - I249-22 (CA4L)	Cable disconnected from negative (-) auxiliary battery terminal	54 Ω or higher

GO TO STEP 21

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

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

Component with harness connected

(Hybrid Vehicle Control ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I249-9 (CA4H) - I249-13 (BATT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
I249-22 (CA4L) - I249-13 (BATT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

GO TO STEP 15

8.	CHECK FOR SHORT TO GND IN CAN BUS LINE

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

Component with harness connected

(Hybrid Vehicle Control ECU)

Standard Resistance:

Tester Connection	Condition	Specified Condition
I249-9 (CA4H) - A192-24 (E12)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
I249-22 (CA4L) - A192-24 (E12)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

INSPECT FOR INTERMITTENT PROBLEMS

9.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the No. 3 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. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A195-13 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

GO TO STEP 12

10.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

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

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Motor Control Inverter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-3 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A195-14 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

GO TO STEP 13

11.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

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

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A195-15 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

REPLACE NO. 3 CAN JUNCTION CONNECTOR

GO TO STEP 14

12.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the I249 hybrid vehicle control ECU connector.

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

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A195-13 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

REPLACE HYBRID VEHICLE CONTROL ECU

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

13.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the A188 hybrid motor control inverter assembly connector.

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Motor Control Inverter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-3 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A195-14 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

REPLACE MG ECU (REPLACE HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

14.	CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the O211 battery ECU assembly connector.

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher
A195-15 (CANL) - I26-4 (CG)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

15.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the No. 3 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. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A195-13 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

GO TO STEP 18

16.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

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

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Motor Control Inverter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-3 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A195-14 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

GO TO STEP 19

17.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

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

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A195-15 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

REPLACE NO. 3 CAN JUNCTION CONNECTOR

GO TO STEP 20

18.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the I249 hybrid vehicle control ECU connector.

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

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A195-13 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

REPLACE HYBRID VEHICLE CONTROL ECU

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

19.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the A188 hybrid motor control inverter assembly connector.

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Motor Control Inverter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-3 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A195-14 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

REPLACE MG ECU (REPLACE HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

20.	CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the O211 battery ECU assembly connector.

DLC3

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher
A195-15 (CANL) - I26-16 (BAT)	Cable disconnected from negative (-) auxiliary battery terminal	6 kΩ or higher

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

21.	CHECK FOR SHORT IN CAN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the No. 3 CAN junction connector.

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

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - A195-13 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

GO TO STEP 24

22.	CHECK FOR SHORT IN CAN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

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

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Motor Control Inverter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-3 (CANH) - A195-14 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

GO TO STEP 25

23.	CHECK FOR SHORT IN CAN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

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

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - A195-15 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE NO. 3 CAN JUNCTION CONNECTOR

GO TO STEP 26

24.	CHECK FOR SHORT IN CAN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the I249 hybrid vehicle control ECU connector.

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

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - A195-13 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	1 MΩ or higher

REPLACE HYBRID VEHICLE CONTROL ECU

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

25.	CHECK FOR SHORT IN CAN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the A188 hybrid motor control inverter assembly connector.

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Motor Control Inverter Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-3 (CANH) - A195-14 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	1 MΩ or higher

REPLACE MG ECU (REPLACE HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID MOTOR CONTROL INVERTER ASSEMBLY)

26.	CHECK FOR SHORT IN CAN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect the O211 battery ECU assembly connector.

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - A195-15 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	1 MΩ or higher

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

27.	CHECK FOR OPEN IN CAN MAIN BUS LINES (HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the hybrid vehicle control ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I249-9 (CA4H) - I249-22 (CA4L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

Result:

Proceed to
OK
NG

*a	Front view of wire harness connector (to Hybrid Vehicle Control ECU)

REPLACE HYBRID VEHICLE CONTROL ECU

28.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

(a) Reconnect the I249 hybrid vehicle control ECU connector.

(b) Disconnect the No. 3 CAN junction connector.

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Hybrid Vehicle Control ECU

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-2 (CANH) - A195-13 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU)

29.	CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR - BATTERY ECU ASSEMBLY)

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

Front view of wire harness connector

(to No. 3 CAN Junction Connector)

to Battery ECU Assembly

Standard Resistance:

Tester Connection	Condition	Specified Condition
A195-4 (CANH) - A195-15 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE NO. 3 CAN JUNCTION CONNECTOR

30.	CHECK FOR OPEN IN CAN MAIN BUS LINES (BATTERY ECU ASSEMBLY)

CAUTION:

Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Reconnect the A195 No. 3 CAN junction connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O211-22 (CA1H) - O211-21 (CA1L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

Result:

Proceed to
OK
NG

*a	Front view of wire harness connector (to Battery ECU Assembly)

REPLACE BATTERY ECU ASSEMBLY

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (BATTERY ECU ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR)

SEE MORE:

Reassembly

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