DTC B2321: Driver Side Door ECU Communication Stop: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK DTC OUTPUT
- Clear the DTC. Refer to DTC CHECK / CLEAR .
- Recheck for DTCs.
Result
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 → See step 9
A: Go to next step
- CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE POWER WINDOW REGULATOR MOTOR)
- Disconnect the O6 multiplex network master switch connector.
- Disconnect the O2 power window regulator motor (for driver side) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition O6-16 (LIN2) - O2-9 (LIN) Always Below 1 Ω O6-16 (LIN2) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
- Remove the multiplex network master switch assembly. Refer to REMOVAL .
- 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 16 (LIN2) - Body ground Always 10 kΩ or higher TEXT IN ILLUSTRATION*a Component without harness connected
(Multiplex Network Master Switch Assembly)
NG → See step 7
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR - AUXILIARY BATTERY, BODY GROUND)
- Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition O2-2 (B) - Body ground Power switch off 11 to 14 V Standard Resistance
Tester Connection Condition Specified Condition O2-1 (GND) - Body ground Always Below 1 Ω
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- Measure the voltage and resistance according to the value(s) in the table below.
- REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE)
- Replace the power window regulator motor assembly (for driver side). Refer to REMOVAL .
NEXT: Go to next step
- CHECK DTC OUTPUT
- Clear the DTC. Refer to DTC CHECK / CLEAR .
- Check for DTCs.
OK
DTC B2321 is not output.
NG → See step 8
OK → END (POWER WINDOW REGULATOR MOTOR ASSEMBLY WAS DEFECTIVE)
- REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to REMOVAL
- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL
- GO TO DTC B1206. Refer to DTC B1206: P/W Master Switch Communication Stop