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Toyota Tacoma 2015-2018 Service Manual: Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch

Toyota Tacoma 2015-2018 Service Manual / Window / Glass / Power Window Control System(w/ Jam Protection Function) / Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch

DESCRIPTION

If the manual up/down function can be performed but the auto up/down function cannot, then the fail-safe mode may be functioning.

If the power window initialization (See page ) has not been performed, the auto up/down function will not operate. ) has not been performed, the auto up/down function will not operate.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • The power window control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power window control system after confirming that the communication system is functioning properly (See page If the front power window regulator motor assembly LH has been replaced ).
  • If the front power window regulator motor assembly LH has been replaced with a new one, initialize the power window control system (See page Check that the "D Window Auto Up" and "D Window Auto Down" power window ).
  • Check that the "D Window Auto Up" and "D Window Auto Down" power window control system customize settings are "ON" before proceeding with work (See page After the catch protection function operates, the auto operation is ).
  • After the catch protection function operates, the auto operation is not performed the first time auto up is performed. All auto up operations performed after the first operate normally

HINT:

If the pulse sensor built into the front power window regulator motor assembly LH is malfunctioning, the power window control system enters fail-safe mode. The remote up and down and auto up and down functions cannot be operated during fail-safe mode. However, the power window can be closed by holding the power window regulator master switch assembly at the auto up position, and opened manually by pushing down the power window regulator master switch assembly (See page Click here ).

Click here

PROCEDURE

1.

READ VALUE USING TECHSTREAM (MASTER SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Master switch / Data List.

(e) Read the Data List according to the display on the Techstream.

Master Switch

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

D Door P/W Auto SW

Driver side power window auto up/down switch signal / ON or OFF

ON: Driver side power window auto switch operated

OFF: Driver side power window auto switch not operated

-

OK:

On the Techstream screen, ON or OFF is displayed accordingly.

NG

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

OK

2.

READ VALUE USING TECHSTREAM (D-DOOR MOTOR)

(a) Enter the following menus: Body Electrical / D-Door Motor / Data List.

(b) Read the Data List according to the display on the Techstream.

D-Door Motor (Front Power Window Regulator Motor Assembly LH)

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

D Door P/W Auto SW

Driver side power window auto up/down switch signal / ON or OFF

ON: Driver side power window auto switch operated

OFF: Driver side power window auto switch not operated

-

OK:

On the Techstream screen, ON or OFF is displayed accordingly.

NG

GO TO STEP 5

OK

3.

PERFORM INITIALIZATION (for Driver Side)

(a) Initialize the front power window regulator motor assembly LH (See page ).

NEXT

4.

CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP/DOWN FUNCTION)

(a) Check that the driver side door power window moves when the auto up/down function of the power window regulator master switch assembly is operated (See page OK: OK: ).

OK:

Driver side auto up/down function is normal.

OK

END (PROBLEM DUE TO INITIALIZATION FAILURE)

NG

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

5.

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

(a) Replace the power window regulator master switch assembly (See page ). ). ).

NEXT

6.

CHECK AND REPLACE POWER WINDOW CONTROL SYSTEM (AUTO UP/DOWN FUNCTION)

(a) Check that the driver side door power window moves when the auto up/down function of the power window regulator master switch assembly is operated (See page OK: OK: ).

OK:

Driver side auto up/down function is normal.

OK

END (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

NG

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

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