DESCRIPTION
This DTC is stored when LIN communication between the power window regulator motor assembly (for 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 (for driver door) and main body ECU (multiplex network body ECU) for 10 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
Body Electrical > Main Body > Trouble Codes
Result |
Proceed to |
---|---|
Only DTC B2321 is output |
A |
DTC B1206 and B2321 are output simultaneously |
B |
HINT:
When DTC B1206 and B2321 are output simultaneously, perform troubleshooting for DTC B1206 first.
B | ![]() |
GO TO DTC B1206 |
|
2. |
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 (LIN2) - 17 (LIN1) |
Always |
Below 1 Ω |
NG | ![]() |
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY |
|
3. |
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)) |
(a) Disconnect the J2 power window regulator motor assembly (for 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 ignition switch from ON to off and wait for 180 seconds or more without operating any switches.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
J6-16 (LIN2) - J2-9 (LIN) |
Ignition switch off |
Below 1 Ω |
J6-16 (LIN2) or J2-9 (LIN) - Body ground |
Ignition switch off |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) - BATTERY, BODY GROUND) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
J2-2 (B) - J2-1 (GND) |
Always |
11 to 14 V |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
J2-1 (GND) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) |
(a) Replace the power window regulator motor assembly (for driver door).
Click here
|
6. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
Body Electrical > Main Body > Trouble CodesOK:
DTC B2321 is not output.
OK | ![]() |
END (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door) WAS DEFECTIVE) |
NG | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
Toyota CH-R Service Manual > General Maintenance: Body
BODY
TIGHTEN BOLTS AND NUTS ON CHASSIS AND BODY
(a) If necessary, tighten the bolts and nuts on the chassis parts listed below.
Front axle and suspension
Drivetrain
Rear axle and suspension
Brake system
Engine mounts
Other chassis parts
(b) If necessary, tighten ...
Toyota CH-R Service Manual > Pre-collision System: Other System Malfunction (C1A63)
DESCRIPTION
The millimeter wave radar sensor receives the throttle signal from the ECM and
judges whether the driver is making an acceleration request.
When the ECM detects an electronic throttle malfunction, it informs the millimeter
wave radar sensor via CAN communication and sets DTC C1A63. ...