Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJF3 |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
Title: NETWORKING: LIN COMMUNICATION SYSTEM: B2321; Driver Side Door ECU Communication Stop; 2016 - 2020 MY Sienna [12/2015 - ] |
DTC
|
B2321
|
Driver Side Door ECU Communication Stop
|
DESCRIPTION
This DTC is stored when LIN communication between the front power window regulator motor LH and main body ECU stops for 10 seconds or more.
DTC Code
|
DTC Detection Condition
|
Trouble Area
|
B2321
|
No communication between the front power window regulator motor LH and main body ECU for 10 seconds or more.
|
-
Front power window regulator motor assembly LH
-
Main body ECU
-
Instrument panel junction block assembly
-
Harness or connector
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
DTC B2325 is stored when the communication between the front power window regulator motor assembly LH and main body ECU stops.
PROCEDURE
(a) Clear the DTC (See page
).
NEXT
|
|
|
(a) Recheck for DTCs (See page
).
Result
Result
|
Proceed to
|
DTC B2321 is output
|
A
|
DTC B2321 and B1206 are output
|
B
|
DTC B2321, B1206 and/or B2325 are output
|
HINT:
-
When both B1206 and B2321 are output at the same time, troubleshoot B1206 first.
-
When both B1206 and B2325 are output at the same time, troubleshoot B2325 first.
B |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART
(See page
)
|
A
|
|
|
3.
|
INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
|
(a) Remove the multiplex network master switch assembly (See page
).
|
|
(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
|
Text in Illustration
*a
|
Component without harness connected
(Multiplex Network Master Switch Assembly)
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)
|
(a) Disconnect the H14 multiplex network master switch assembly connector.
(b) Disconnect the H1 front door window regulator motor assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
H14-16 (LIN2) - H1-9 (LIN)
|
Always
|
Below 1 Ω
|
H14-16 (LIN2) or H1-9 (LIN) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - BATTERY AND BODY GROUND)
|
(a) Disconnect the power window regulator motor assembly LH connector.
|
|
(b) Measure the resistance and voltage according to the value(s) in the tables below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
H1-1 (GND) - Body ground
|
Always
|
Below 1 Ω
|
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
H1-2 (B) - Body ground
|
Always
|
11 to 14 V
|
Text in Illustration
*a
|
Front view of wire harness connector
(to Front Power Window Regulator Motor Assembly LH)
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
6.
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
|
(a) Replace the front power window regulator motor assembly LH (See page
).
NEXT
|
|
|
(a) Clear the DTC (See page
).
NEXT
|
|
|
(a) Recheck for DTCs (See page
).
Result
Result
|
Proceed to
|
DTC B2321 is not output
|
A
|
DTC B2321 is output
|
B
|
A |
|
END (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH WAS DEFECTIVE)
|
|