Toyota Tacoma manuals

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

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 )
  • 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.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Standard Resistance:

Tester Connection

Condition

Specified Condition

1D-25 - MB-16 (LIN2)

Always

Below 1 Ω
Text in Illustration

*a

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).

NG

REPLACE DRIVER SIDE JUNCTION BLOCK

OK

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.

(c) Measure the resistance according to the value(s) in the table below.

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
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

P22-1 (GND) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

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

NEXT

5.

CHECK DTC OUTPUT

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

(b) Check for DTCs.

OK:

DTC B2322 is not output.

OK

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

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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