| Last Modified: 02-14-2025 | 6.11:8.1.0 | Doc ID: RM1000000014TYT |
| Model Year Start: 2018 | Model: Camry HV | Prod Date Range: [07/2017 - ] |
| Title: NETWORKING: LIN COMMUNICATION SYSTEM: B2321; Driver Side Door ECU Communication Stop; 2018 - 2024 MY Camry HV [07/2017 - ] | ||
|
DTC |
B2321 |
Driver Side Door ECU Communication Stop |
DESCRIPTION
This DTC is stored when LIN communication between the power window regulator motor assembly (driver door) and main body ECU (multiplex network body ECU) stops for 10 seconds or more.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B2321 |
Driver Side Door ECU Communication Stop |
No communication between power window regulator motor assembly (driver door) and main body ECU (multiplex network body ECU) for 10 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
When a power window regulator motor assembly is replaced or removed and reinstalled, it is necessary to perform initialization.
Click here
![2018 - 2024 MY Camry HV [07/2017 - ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)
-
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Main Body > Clear DTCs
|
|
2. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Main Body > Trouble Codes
OK:
DTC B1206 is not output.
| NG |
|
|
|
3. |
INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
|
(a) Remove the multiplex network master switch assembly. Click here
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
16 - 17 |
Always |
Below 1 Ω |
| NG |
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR)) |
(a) Disconnect the O6 power window regulator motor assembly (driver door) connector.
(b) Measure the resistance according to the value(s) in the table below.
NOTICE:
Make sure that each ECU is in sleep mode before performing the inspection. To enter sleep mode, turn the power switch from on (IG) to off and wait for 180 seconds or more without operating any switches.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O2-16 (LIN2) - O6-9 (LIN) |
Power switch off |
Below 1 Ω |
|
O2-16 (LIN2) or O6-9 (LIN) - Body ground |
Power switch off |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR) - AUXILIARY BATTERY, BODY GROUND) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O6-2 (B) - O6-1 (GND) |
Power switch off |
11 to 14 V |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O6-1 (GND) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR) |
(a) Replace the power window regulator motor assembly (driver door).
Click here
|
|
7. |
CHECK FOR DTC |
(a) Clear the DTCs.
Body Electrical > Main Body > Clear DTCs
(b) Recheck for DTCs.
Body Electrical > Main Body > Trouble Codes
OK:
DTC B2321 is not output.
| OK |
|
END (POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER DOOR) WAS DEFECTIVE) |
| NG |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
|