Toyota 4Runner: Back Door Power Window ECU Inner Motor Failure (B2311)

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Back Door Power Window ECU Inner Motor Failure (B2311)

DESCRIPTION

The power window regulator motor is operated by the back door power window regulator switch. The back power window regulator motor assembly has motor and ECU functions.

This DTC is stored when the back door power window regulator motor assembly has a malfunction, or the ECU built into the regulator motor determines that the fully closed window position has deviated approximately 20 mm (0.787 in.) or more from the normal position.

HINT:

DTC B2311 can be stored in back door power window regulator motor (power window ECU).

Back Door P/W

DTC Code	DTC Detection Condition	Trouble Area
B2311	Either condition is met: Back door power window regulator motor malfunctions. ECU in the back door power window regulator motor determines that the fully closed window position has deviated approx. 20 mm (0.787 in.) or more from the normal position.	Back door power window regulator motor

CAUTION / NOTICE / HINT

NOTICE:

When a power window regulator motor is reinstalled or replaced, the power window control system must be initialized.
After any door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be reinitialized by repeating the following operations at least 5 times:
1. Close the power window by fully pulling up the multiplex network master switch or back door power window regulator switch and holding it in the auto up position.
2. Open the power window by fully pushing down the switch.

PROCEDURE

1.	PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that the back door power window regulator motor operates (See page ).

Back Door P/W

Tester Display	Test Part	Control Range	Diagnostic Note
Back Door Power Window	Back door power window	OFF/UP/DOWN	-

OK:

The back door power window regulator motor operates.

REPLACE BACK DOOR POWER WINDOW REGULATOR MOTOR ASSEMBLY

2.	PERFORM INITIALIZATION

(a) Initialize the back door power window regulator motor assembly (See page ).

(b) Check that the back door power window operates normally by opening and closing the window (See page ).

HINT:

The power window operates normally.

3.	CHECK WHETHER PARTS HAVE BEEN INSTALLED CORRECTLY

(a) Check that the power window components are installed correctly.

OK:

Power window components are installed correctly.

HINT:

If the power window components are installed correctly, the problem has been caused by battery disconnection while the ignition switch was ON, or the motor being overheated.

END

INSTALL PARTS CORRECTLY

Back Door Power Window Switch ON Stuck (B2312)

DESCRIPTION This DTC is stored when the back door power window regulator motor is stuck. NOTICE: When a power window regulator is reinstalled or replaced, the power window control system must be ...

Power Window Switch Malfunction (B2312)

DESCRIPTION The power window regulator motor is driven by operating the power window regulator switch. The power window regulator motor assembly consists of the motor and ECU. This DTC is output w ...

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