- CAN main bus line, CAN branch line or connector
- Central gateway ECU (network gateway ECU)
-
Forward recognition camera
(w/ Front Camera System)
-
Millimeter wave radar sensor assembly
(w/ Front Camera System)
-
Blind spot monitor sensor LH (B)
(w/ Blind Spot Monitor System)
- No. 18 CAN junction connector
- No. 19 CAN junction connector
- CAN junction terminal
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028US4 |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [11/2022 - ] |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): Check Bus 1 Line; 2023 - 2025 MY Corolla Corolla HV [11/2022 - ] | ||
|
Check Bus 1 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. |
|
WIRING DIAGRAM
w/o Front Camera System with Blind Spot Monitor System
w/ Front Camera System
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 - 2025 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 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.
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
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:
|
|
| NG |
|
|
|
2. |
CHECK FOR SHORT IN CAN BUS LINES |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
|
|
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 |
|---|---|---|
|
I173-28 (CA1H) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
I173-27 (CA1L) - I26-16 (BAT) |
| NG |
|
|
|
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 |
|---|---|---|
|
I173-28 (CA1H) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
I173-27 (CA1L) - I26-4 (CG) |
| OK |
|
|
|
5. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the I192 No. 18 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. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
I192-7 (CANL) - I26-4 (CG) |
| NG |
|
|
|
6. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 18 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA OR NO. 19 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 No. 18 CAN Junction Connector) |
*b |
to Forward Recognition Camera or No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
I192-6 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE NO. 18 CAN JUNCTION CONNECTOR |
| NG |
|
|
7. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 18 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.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
I192-7 (CANL) - I26-4 (CG) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
|
8. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/o Front Camera System |
A |
|
w/ Front Camera System |
B |
| B |
|
|
|
9. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to No. 18 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
O203-5 (CANL) - I26-4 (CG) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
|
10. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Disconnect the T21 forward recognition camera connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to Forward Recognition Camera) |
*b |
to No. 18 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T21-2 (CA2P) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
T21-1 (CA2L) - I26-4 (CG) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
|
|
11. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (FORWARD RECOGNITION CAMERA - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to Forward Recognition Camera) |
*b |
to Millimeter Wave Radar Sensor Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T21-10 (CA1P) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
T21-9 (CA1N) - I26-4 (CG) |
| OK |
|
|
|
12. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
(a) Disconnect the A128 millimeter wave radar sensor 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 Millimeter Wave Radar Sensor Assembly) |
*b |
to Forward Recognition Camera |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A128-10 (CA3H) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A128-9 (CA3L) - I26-4 (CG) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
|
|
13. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - NO. 19 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 Millimeter Wave Radar Sensor Assembly) |
*b |
to No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A128-4 (CA2H) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
A128-3 (CA2L) - I26-4 (CG) |
| OK |
|
|
|
14. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
(a) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to Millimeter Wave Radar Sensor Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
O203-5 (CANL) - I26-4 (CG) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
|
|
15. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/ Blind Spot Monitor System |
A |
|
w/o Blind Spot Monitor System |
B |
| B |
|
|
|
16. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to Blind Spot Monitor Sensor LH (B) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
O203-7 (CANL) - I26-4 (CG) |
| NG |
|
|
|
17. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
O203-6 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE NO. 19 CAN JUNCTION CONNECTOR |
| NG |
|
|
18. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
(a) Disconnect the O57 blind spot monitor sensor LH (B) 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. 19 CAN Junction Connector) |
*b |
to Blind Spot Monitor Sensor LH (B) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-3 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
O203-7 (CANL) - I26-4 (CG) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
|
19. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Disconnect the O95 CAN junction terminal 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. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - I26-4 (CG) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
|
O203-6 (CANL) - I26-4 (CG) |
| OK |
|
REPLACE CAN JUNCTION TERMINAL |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
|
20. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the I192 No. 18 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. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
I192-7 (CANL) - I26-16 (BAT) |
| NG |
|
|
|
21. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 18 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA OR NO. 19 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 No. 18 CAN Junction Connector) |
*b |
to Forward Recognition Camera or No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
I192-6 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE NO. 18 CAN JUNCTION CONNECTOR |
| NG |
|
|
22. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 18 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.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
I192-7 (CANL) - I26-16 (BAT) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
|
23. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/o Front Camera System |
A |
|
w/ Front Camera System |
B |
| B |
|
|
|
24. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to No. 18 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
O203-5 (CANL) - I26-16 (BAT) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
|
25. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Disconnect the T21 forward recognition camera connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to Forward Recognition Camera) |
*b |
to No. 18 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T21-2 (CA2P) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
T21-1 (CA2L) - I26-16 (BAT) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
|
|
26. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (FORWARD RECOGNITION CAMERA - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to Forward Recognition Camera) |
*b |
to Millimeter Wave Radar Sensor Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T21-10 (CA1P) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
T21-9 (CA1N) - I26-16 (BAT) |
| OK |
|
|
|
27. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
(a) Disconnect the A128 millimeter wave radar sensor 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 Millimeter Wave Radar Sensor Assembly) |
*b |
to Forward Recognition Camera |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A128-10 (CA3H) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A128-9 (CA3L) - I26-16 (BAT) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
|
|
28. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - NO. 19 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 Millimeter Wave Radar Sensor Assembly) |
*b |
to No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A128-4 (CA2H) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
A128-3 (CA2L) - I26-16 (BAT) |
| OK |
|
|
|
29. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
(a) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to Millimeter Wave Radar Sensor Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
O203-5 (CANL) - I26-16 (BAT) |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
|
|
30. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/ Blind Spot Monitor System |
A |
|
w/o Blind Spot Monitor System |
B |
| B |
|
|
|
31. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to Blind Spot Monitor Sensor LH (B) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
O203-7 (CANL) - I26-16 (BAT) |
| NG |
|
|
|
32. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below.
|
*1 |
DLC3 |
- |
- |
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
O203-6 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE NO. 19 CAN JUNCTION CONNECTOR |
| NG |
|
|
33. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
(a) Disconnect the O57 blind spot monitor sensor LH (B) 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. 19 CAN Junction Connector) |
*b |
to Blind Spot Monitor Sensor LH (B) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-3 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
O203-7 (CANL) - I26-16 (BAT) |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
|
34. |
CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Disconnect the O95 CAN junction terminal 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. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - I26-16 (BAT) |
Cable disconnected from negative (-) auxiliary battery terminal |
6 kΩ or higher |
|
O203-6 (CANL) - I26-16 (BAT) |
| OK |
|
REPLACE CAN JUNCTION TERMINAL |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
|
35. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the I192 No. 18 CAN junction connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I192-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
|
|
36. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 18 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA OR NO. 19 CAN JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 18 CAN Junction Connector) |
*b |
to Forward Recognition Camera or No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-2 (CANH) - I192-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE NO. 18 CAN JUNCTION CONNECTOR |
| NG |
|
|
37. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 18 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.
|
*a |
Front view of wire harness connector (to No. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I192-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
|
38. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/o Front Camera System |
A |
|
w/ Front Camera System |
B |
| B |
|
|
|
39. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Reconnect the I192 No. 18 CAN junction connector.
(b) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to No. 18 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - O203-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
|
40. |
CHECK FOR SHORT IN CAN BUS LINES (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Reconnect the I192 No. 18 CAN junction connector.
(b) Disconnect the T21 forward recognition camera connector.
|
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
|
|
41. |
CHECK FOR SHORT IN CAN BUS LINES (FORWARD RECOGNITION CAMERA - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK |
|
|
|
42. |
CHECK FOR SHORT IN CAN BUS LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
(a) Reconnect the T21 forward recognition camera connector.
(b) Disconnect the A128 millimeter wave radar sensor assembly connector.
|
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
|
|
43. |
CHECK FOR SHORT IN CAN BUS LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - NO. 19 CAN JUNCTION CONNECTOR) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK |
|
|
|
44. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
(a) Reconnect the A128 millimeter wave radar sensor assembly connector.
(b) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to Millimeter Wave Radar Sensor Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - O203-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
|
|
45. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/ Blind Spot Monitor System |
A |
|
w/o Blind Spot Monitor System |
B |
| B |
|
|
|
46. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to Blind Spot Monitor Sensor LH (B) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-3 (CANH) - O203-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
200 Ω or higher |
| NG |
|
|
|
47. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - O203-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE NO. 19 CAN JUNCTION CONNECTOR |
| NG |
|
|
48. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
(a) Disconnect the O57 blind spot monitor sensor LH (B) connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to Blind Spot Monitor Sensor LH (B) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-3 (CANH) - O203-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - BLIND SPOT MONITOR SENSOR LH (B)) |
|
49. |
CHECK FOR SHORT IN CAN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Disconnect the O95 CAN junction terminal connector.
(b) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - O203-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
1 MΩ or higher |
| OK |
|
REPLACE CAN JUNCTION TERMINAL |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
|
50. |
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:
|
|
| OK |
|
|
|
51. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Reconnect the I173 central gateway ECU (network gateway ECU) connector.
(b) Disconnect the I192 No. 18 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. 18 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-3 (CANH) - I192-7 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 18 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
|
|
52. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 18 CAN JUNCTION CONNECTOR - FORWARD RECOGNITION CAMERA OR NO. 19 CAN JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 18 CAN Junction Connector) |
*b |
to Forward Recognition Camera or No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I192-2 (CANH) - I192-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE NO. 18 CAN JUNCTION CONNECTOR |
|
|
53. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/o Front Camera System |
A |
|
w/ Front Camera System |
B |
| B |
|
|
|
54. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Reconnect the I192 No. 18 CAN junction connector.
(b) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to No. 18 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - O203-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - NO. 18 CAN JUNCTION CONNECTOR) |
|
55. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
(a) Reconnect the I192 No. 18 CAN junction connector.
(b) Disconnect the T21 forward recognition camera connector.
|
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (FORWARD RECOGNITION CAMERA - NO. 18 CAN JUNCTION CONNECTOR) |
|
|
56. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (FORWARD RECOGNITION CAMERA - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK |
|
|
|
57. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
(a) Reconnect the T21 forward recognition camera connector.
(b) Disconnect the A128 millimeter wave radar sensor assembly connector.
|
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - FORWARD RECOGNITION CAMERA) |
|
|
58. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (MILLIMETER WAVE RADAR SENSOR ASSEMBLY - NO. 19 CAN JUNCTION CONNECTOR) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK |
|
|
|
59. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
(a) Reconnect the A128 millimeter wave radar sensor assembly connector.
(b) Disconnect the O203 No. 19 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. 19 CAN Junction Connector) |
*b |
to Millimeter Wave Radar Sensor Assembly |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-1 (CANH) - O203-5 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 19 CAN JUNCTION CONNECTOR - MILLIMETER WAVE RADAR SENSOR ASSEMBLY) |
|
|
60. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 19 CAN JUNCTION CONNECTOR - CAN JUNCTION TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to No. 19 CAN Junction Connector) |
*b |
to CAN Junction Terminal |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O203-2 (CANH) - O203-6 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE NO. 19 CAN JUNCTION CONNECTOR |
|
|
61. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (CAN JUNCTION TERMINAL) |
(a) Reconnect the O203 No. 19 CAN junction connector.
(b) Disconnect the O95 CAN junction terminal connector.
(c) Measure the resistance according to the value(s) in the table below.
|
*a |
Front view of wire harness connector (to CAN Junction Terminal) |
*b |
to No. 19 CAN Junction Connector |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O95-3 (CANH) - O95-2 (CANL) |
Cable disconnected from negative (-) auxiliary battery terminal |
108 to 132 Ω |
| OK |
|
REPLACE CAN JUNCTION TERMINAL |
| NG |
|
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CAN JUNCTION TERMINAL - NO. 19 CAN JUNCTION CONNECTOR) |
|
|