DESCRIPTION
This DTC is stored when LIN communication between the power window regulator motor assembly LH 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. |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
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*a | Component without harness connected (Instrument Panel Junction Block Assembly) | - | - |
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
(c) Measure the resistance according to the value(s) in the table below.
HINT:
This inspection is to check the LIN communication line in the instrument panel junction block assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
2D-25 - MB-16 (LIN2) | Always | Below 1 Ω |
NG | ![]() | REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
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2. | CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) |
(a) Disconnect the N13 power window regulator motor assembly LH 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 engine switch from on (IG) to off and wait for 180 seconds or more without operating any switches.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
2D-25 - N13-9 (LIN) | Engine switch off | Below 1 Ω |
N13-9 (LIN) or 2D-25 - Body ground | Engine switch off | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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3. | CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - BATTERY, BODY GROUND) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
N13-2 (B) - N13-1 (E) | 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 |
---|---|---|
N13-1 (E) - Body ground | Always | Below 1 Ω |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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4. | REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY |
(a) Replace the power window regulator motor assembly LH.
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5. | CHECK FOR DTC |
(a) Clear the DTCs.
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(b) Recheck for DTCs.
Body Electrical > Main Body > Trouble CodesOK:
DTC B2321 is not output.
OK | ![]() | END (POWER WINDOW REGULATOR MOTOR ASSEMBLY LH WAS DEFECTIVE) |
NG | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
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