| Last Modified: 08-22-2025 | 6.11:8.1.0 | Doc ID: RM10000000259RG |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): U111A87,U115087,U115487,U115887,U117008,U117087; Lost Communication with ECM/PCM "A" (ch2) Missing Message; 2023 - 2026 MY Corolla Corolla HV [09/2022 - ] | ||
|
DTC |
U111A87 |
Lost Communication with ECM/PCM "A" (ch2) Missing Message |
|
DTC |
U115087 |
Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message |
|
DTC |
U115487 |
Lost Communication with Drive Motor Control Module "A" (ch2) Missing Message |
|
DTC |
U115887 |
Lost Communication with Electronic Brake Booster Control Module "A" (ch2) Missing Message |
|
DTC |
U117008 |
Lost Communication with Brake System Control Module (ch2) Bus Signal / Message Failure |
|
DTC |
U117087 |
Lost Communication with Brake System Control Module (ch2) Missing Message |
DESCRIPTION
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
|---|---|---|---|---|
|
U111A87 |
Lost Communication with ECM/PCM "A" (ch2) Missing Message |
Communication stops between the ECM and the hybrid vehicle control ECU. |
|
DTC Output from
|
|
U115087 |
Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message |
Communication stops between the ECM or skid control ECU (brake actuator assembly) and the hybrid vehicle control ECU. |
|
DTC Output from
|
|
U115487 |
Lost Communication with Drive Motor Control Module "A" (ch2) Missing Message |
Communication stops between the ECM or hybrid vehicle control ECU and the inverter with converter assembly. |
|
DTC Output from
|
|
U115887 |
Lost Communication with Electronic Brake Booster Control Module "A" (ch2) Missing Message |
Communication stops between the electric brake booster (brake booster with master cylinder assembly) and the skid control ECU (brake actuator assembly). |
|
DTC Output from
|
|
U117008 |
Lost Communication with Brake System Control Module (ch2) Bus Signal / Message Failure |
Communication stops between the inverter with converter assembly and the skid control ECU (brake actuator assembly). |
|
DTC Output from
|
|
U117087 |
Lost Communication with Brake System Control Module (ch2) Missing Message |
Communication stops between the electric brake booster (brake booster with master cylinder assembly) and the skid control ECU (brake actuator assembly). |
|
DTC Output from
|
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
![2023 - 2026 MY Corolla Corolla HV [09/2022 - ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
- 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.
|
*a |
Component with harness connected (Hybrid Vehicle Control ECU) |
- |
- |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I3-50 (CA3P) - I3-49 (CA3N) |
Cable disconnected from negative (-) auxiliary battery terminal |
Below 70 Ω |
| NG |
|
|
|
2. |
CHECK FOR SHORT IN CAN BUS LINES |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Component with harness connected (Hybrid Vehicle Control ECU) |
- |
- |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I3-50 (CA3P) - I3-49 (CA3N) |
Cable disconnected from negative (-) auxiliary battery terminal |
54 Ω or higher |
| NG |
|
|
|
3. |
CHECK FOR SHORT TO +B IN CAN BUS LINE |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Component with harness connected (Hybrid Vehicle Control ECU) |
- |
- |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I3-50 (CA3P) - I3-13 (BATT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
I3-49 (CA3N) - I3-13 (BATT) |
| NG |
|
|
|
4. |
CHECK FOR SHORT TO GND IN CAN BUS LINE |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Component with harness connected (Hybrid Vehicle Control ECU) |
- |
- |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I3-50 (CA3P) - I3-1 (E1) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
I3-49 (CA3N) - I3-1 (E1) |
| OK |
|
|
|
5. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the A164 No. 33 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. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A164-6 (CANL) - I26-4 (CG) |
| NG |
|
|
|
6. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - NO. 34 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 No. 33 Junction Connector) |
*b |
to No. 34 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A164-7 (CANL) - I26-4 (CG) |
| NG |
|
|
|
7. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER 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. 33 Junction Connector) |
*b |
to Electric Brake Booster (Brake Booster with Master Cylinder Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-1 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A164-5 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE NO. 33 JUNCTION CONNECTOR |
| NG |
|
|
8. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 33 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. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A164-6 (CANL) - I26-4 (CG) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
|
9. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
(a) Disconnect the A157 electric brake booster (brake booster with master cylinder 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 No. 33 Junction Connector) |
*b |
to Electric Brake Booster (Brake Booster with Master Cylinder Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-1 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A164-5 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) |
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
|
10. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
(a) Disconnect the A165 No. 34 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. 34 Junction Connector) |
*b |
to No. 33 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-4 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-8 (CANL) - I26-4 (CG) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
|
|
11. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - ECM) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to ECM |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-7 (CANL) - I26-4 (CG) |
| NG |
|
|
|
12. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 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. 34 Junction Connector) |
*b |
to Inverter with Converter Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-1 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-5 (CANL) - I26-4 (CG) |
| NG |
|
|
|
13. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR 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. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-6 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE NO. 34 JUNCTION CONNECTOR |
| NG |
|
|
14. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - 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 No. 34 Junction Connector) |
*b |
to ECM |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-7 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE ECM
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - ECM) |
|
15. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY) |
(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 No. 34 Junction Connector) |
*b |
to Inverter with Converter Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-1 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-5 (CANL) - I26-4 (CG) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY) |
|
16. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Disconnect the A51 skid control ECU (brake actuator 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 No. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A165-6 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
|
17. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the A164 No. 33 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. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A164-6 (CANL) - I26-16 (BAT) |
| NG |
|
|
|
18. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - NO. 34 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 No. 33 Junction Connector) |
*b |
to No. 34 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A164-7 (CANL) - I26-16 (BAT) |
| NG |
|
|
|
19. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER 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. 33 Junction Connector) |
*b |
to Electric Brake Booster (Brake Booster with Master Cylinder Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-1 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A164-5 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE NO. 33 JUNCTION CONNECTOR |
| NG |
|
|
20. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 33 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. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A164-6 (CANL) - I26-16 (BAT) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
|
21. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
(a) Disconnect the A157 electric brake booster (brake booster with master cylinder 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 No. 33 Junction Connector) |
*b |
to Electric Brake Booster (Brake Booster with Master Cylinder Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-1 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A164-5 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) |
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
|
22. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
(a) Disconnect the A165 No. 34 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. 34 Junction Connector) |
*b |
to No. 33 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-4 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-8 (CANL) - I26-16 (BAT) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
|
|
23. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - ECM) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to ECM |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-7 (CANL) - I26-16 (BAT) |
| NG |
|
|
|
24. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 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. 34 Junction Connector) |
*b |
to Inverter with Converter Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-1 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-5 (CANL) - I26-16 (BAT) |
| NG |
|
|
|
25. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR 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. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-6 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE NO. 34 JUNCTION CONNECTOR |
| NG |
|
|
26. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - 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 No. 34 Junction Connector) |
*b |
to ECM |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-7 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE ECM
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - ECM) |
|
27. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY) |
(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 No. 34 Junction Connector) |
*b |
to Inverter with Converter Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-1 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-5 (CANL) - I26-16 (BAT) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY) |
|
28. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Disconnect the A51 skid control ECU (brake actuator 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 No. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A165-6 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
|
29. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the A164 No. 33 junction connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - A164-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
|
|
30. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 33 JUNCTION CONNECTOR - NO. 34 JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 33 Junction Connector) |
*b |
to No. 34 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-3 (CANH) - A164-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
|
|
31. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 33 Junction Connector) |
*b |
to Electric Brake Booster (Brake Booster with Master Cylinder Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-1 (CANH) - A164-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
| OK |
|
REPLACE NO. 33 JUNCTION CONNECTOR |
| NG |
|
|
32. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 33 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. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - A164-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
|
33. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
(a) Disconnect the A157 electric brake booster (brake booster with master cylinder assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 33 Junction Connector) |
*b |
to Electric Brake Booster (Brake Booster with Master Cylinder Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-1 (CANH) - A164-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
REPLACE ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) |
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - ELECTRIC BRAKE BOOSTER (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)) |
|
34. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
(a) Reconnect the A164 No. 33 junction connector.
(b) Disconnect the A165 No. 34 junction connector.
(c) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to No. 33 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-4 (CANH) - A165-8 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
|
|
35. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 JUNCTION CONNECTOR - ECM) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to ECM |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-3 (CANH) - A165-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
| NG |
|
|
|
36. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 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. 34 Junction Connector) |
*b |
to Inverter with Converter Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-1 (CANH) - A165-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
| NG |
|
|
|
37. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - A165-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
| OK |
|
REPLACE NO. 34 JUNCTION CONNECTOR |
| NG |
|
|
38. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 JUNCTION CONNECTOR - ECM) |
(a) Disconnect the A46 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to ECM |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-3 (CANH) - A165-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
REPLACE ECM
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - ECM) |
|
39. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY) |
(a) Disconnect the A155 inverter with converter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to Inverter with Converter Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-1 (CANH) - A165-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - INVERTER WITH CONVERTER ASSEMBLY) |
|
40. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Disconnect the A51 skid control ECU (brake actuator assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - A165-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
|
41. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (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. Standard Resistance:
|
|
| OK |
|
|
|
42. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
(a) Reconnect the I3 hybrid vehicle control ECU connector.
(b) Disconnect the A164 No. 33 junction connector.
(c) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 33 Junction Connector) |
*b |
to Hybrid Vehicle Control ECU |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-2 (CANH) - A164-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 33 JUNCTION CONNECTOR - HYBRID VEHICLE CONTROL ECU) |
|
|
43. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 33 JUNCTION CONNECTOR - NO. 34 JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 33 Junction Connector) |
*b |
to No. 34 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A164-3 (CANH) - A164-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE NO. 33 JUNCTION CONNECTOR |
|
|
44. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
(a) Reconnect the A164 No. 33 junction connector.
(b) Disconnect the A165 No. 34 junction connector.
(c) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to No. 33 Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-4 (CANH) - A165-8 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 34 JUNCTION CONNECTOR - NO. 33 JUNCTION CONNECTOR) |
|
|
45. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 34 JUNCTION CONNECTOR - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 34 Junction Connector) |
*b |
to Skid Control ECU (Brake Actuator Assembly) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A165-2 (CANH) - A165-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE NO. 34 JUNCTION CONNECTOR |
|
|
46. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Reconnect the A165 No. 34 junction connector.
(b) Disconnect the A51 skid control ECU (brake actuator assembly) connector.
|
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK |
|
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - NO. 34 JUNCTION CONNECTOR) |
|
|