NETWORKING: LIN COMMUNICATION SYSTEM: B2324; Rear Door LH ECU Communication Stop; 2016 - 2020 MY Sienna [12/2015

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM100000000VJF7
Model Year Start: 2016	Model: Sienna	Prod Date Range: [12/2015 - ]
Title: NETWORKING: LIN COMMUNICATION SYSTEM: B2324; Rear Door LH ECU Communication Stop; 2016 - 2020 MY Sienna [12/2015 - ]

DTC

B2324

Rear Door LH ECU Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the rear power window regulator motor assembly LH and main body ECU stops for 10 seconds or more.

DTC Code	DTC Detection Condition	Trouble Area
B2324	No communication between the rear power window regulator motor assembly LH and main body ECU for 10 seconds or more.	Rear power window regulator motor assembly LH Main body ECU Harness or connector Instrument panel junction block assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When using the Techstream with the ignition switch off to troubleshoot:
Connect the Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
Inspect the fuses for circuits related to this system before performing the following inspection procedure

HINT:

DTC B2325 is stored when the communication between the rear power window regulator motor LH and main body ECU stops.

PROCEDURE

CLEAR DTC

(a) Clear the DTC (See page ).

2.	CHECK FOR DTC

(a) Check for DTCs (See page ).

Result

Result	Proceed to
DTC B2322 is output	A
DTC B2322 and B2325 are output	B

HINT:

When both B2322 and B2325 are output at the same time, troubleshoot B2325 first.

GO TO DIAGNOSTIC TROUBLE CODE CHART

(See page )

3.	INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Text in Illustration

Component without harness connected

(Instrument Panel Junction Block Assembly)

(a) Remove the instrument panel junction block assembly (See page ).

(b) Remove the main body ECU from the instrument panel junction block assembly (See page ).

Standard Resistance:

Tester Connection	Condition	Specified Condition
2H-27 - 2I-16 (LIN2)	Always	Below 1 Ω

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

4.	CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)

(a) Disconnect the 2H instrument panel junction block assembly connector.

(b) Disconnect the J7 rear power window regulator motor assembly LH connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
2H-27 - J7-9 (LIN)	Always	Below 1 Ω
2H-7 or J7-9 (LIN) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - BATTERY AND BODY GROUND)

(a) Disconnect the rear 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
J7-1 (GND) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
J7-2 (B) - Body ground	Always	11 to 14 V

Text in Illustration

*a	Front view of wire harness connector (to Rear Power Window Regulator Motor assembly LH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

(a) Replace the rear power window regulator motor assembly LH (See page ).

CLEAR DTC

(a) Clear the DTC (See page ).

8.	CHECK FOR DTC

(a) Recheck for DTCs (See page ).

Result

Result	Proceed to
DTC B2324 is not output	A
DTC B2324 is output	B

END (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH WAS DEFECTIVE)

REPLACE MAIN BODY ECU