Toyota 4Runner manuals

Toyota 4Runner: Rear Door LH ECU Communication Stop (B2324)

DESCRIPTION

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

  • Rear power window regulator motor assembly LH
  • Main body ECU (multiplex network body ECU)
  • Harness or connector

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 light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.

  • Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

HINT:

When communication between the rear power window regulator motor assembly LH and main body ECU (multiplex network body ECU) stops, DTC B2325 is also stored.

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs (See page ).



NEXT

2.

CHECK FOR DTC

(a) Check for DTCs (See page ).


OK:

DTC B2324 is not output.


OK

USE SIMULATION METHOD TO CHECK


NG

3.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR POWER WINDOW REGULATOR MOTOR LH)

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


(b) Disconnect the K2 rear power 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

A-16 (LIN2) - K2-9 (LIN)

Always

Below 1 Ω

A-16 (LIN2) or K2-9 (LIN) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

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

(a) Disconnect the K2 rear power window regulator motor assembly LH connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K2-1 (GND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

K2-2 (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)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

5.

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

(a) Temporarily replace the rear power window regulator motor assembly LH with a new or normally functioning one (See page ).



NEXT

6.

CLEAR DTC

(a) Clear the DTCs (See page ).



NEXT

7.

CHECK FOR DTC

(a) Check for DTCs (See page ).


OK:

DTC B2324 is not output.


OK

END (REAR POWER WINDOW REGULATOR MOTOR LH IS DEFECTIVE)


NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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