Toyota Tacoma (2015-2018) Service Manual: Front Passenger Side Door ECU Communication Stop (B2322)

Toyota Tacoma (2015-2018) Service Manual / Multiplex Communication / Lin Communication System / Front Passenger Side Door ECU Communication Stop (B2322)

DESCRIPTION

This DTC is stored when LIN communication between the front power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC No.	DTC Detection Condition	Trouble Area
B2322	No communication between front power window regulator motor assembly RH and main body ECU (multiplex network body ECU) for 10 seconds or more.	Front power window regulator motor assembly RH Main body ECU (multiplex network body ECU) Driver side junction block Wire harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.
If the main body ECU (multiplex network body ECU) is replaced, refer to Registration (See page )
When a power window regulator motor assembly is replaced or removed and reinstalled, it requires initialization (See page ).

PROCEDURE

1.	INSPECT DRIVER SIDE JUNCTION BLOCK

(a) Remove the driver side junction block (See page (b) Remove the main body ECU (multiplex network body ECU) from the driver side ).

(b) Remove the main body ECU (multiplex network body ECU) from the driver side junction block.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1D-25 - MB-16 (LIN2)	Always	Below 1 Ω

Text in Illustration

Component without harness connected

(Driver Side Junction Block)

HINT:

This inspection is to check the LIN line in the driver side junction block that connects the wire harness to the built-in main body ECU (multiplex network body ECU).

REPLACE DRIVER SIDE JUNCTION BLOCK

2.	CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)

(a) Disconnect the 1D driver side junction block connector.

(b) Disconnect the P22 front power window regulator motor assembly RH connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1D-25 - P22-9 (LIN)	Always	Below 1 Ω
1D-25 or P22-9 (LIN) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH - POWER SOURCE CIRCUIT)

(a) Disconnect the P22 front power window regulator motor assembly RH connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
P22-2 (B) - P22-1 (GND)	Always	11 to 14 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
P22-1 (GND) - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

(a) Replace the front power window regulator motor assembly RH.

5.	CHECK DTC OUTPUT

(a) Clear the DTCs (See page (b) Check for DTCs. ).

(b) Check for DTCs.

OK:

DTC B2322 is not output.

END (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH WAS DEFECTIVE)

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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