Toyota Tacoma (2015-2018) Service Manual: Remote Up / Down Function does not Operate

Toyota Tacoma (2015-2018) Service Manual / Window / Glass / Power Window Control System(w/ Jam Protection Function) / Remote Up / Down Function does not Operate

DESCRIPTION

When the ignition switch is ON, the power window regulator master switch assembly sends remote up/down signals to each power window regulator motor assembly via the LIN communication line.

WIRING DIAGRAM

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 a power window regulator motor assembly has been replaced with a new one, initialize the power window control system (See page ).

PROCEDURE

1.	READ VALUE USING TECHSTREAM (MAIN BODY)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

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

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

Main Body (Main Body ECU)

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Communication P-Door Motor	Connection status between front power window regulator motor assembly RH and main body ECU / OK or STOP	OK: Normal communication STOP: Communication stopped	-
Communication Master SW	Connection status between multiplex network master switch and main body ECU / OK or STOP	OK: Normal communication STOP: Communication stopped	-

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Communication P-Door Motor

Connection status between front power window regulator motor assembly RH and main body ECU / OK or STOP

OK: Normal communication

STOP: Communication stopped

Communication Master SW

Connection status between multiplex network master switch and main body ECU / OK or STOP

OK: Normal communication

STOP: Communication stopped

OK:

On the Techstream screen, OK is displayed.

GO TO LIN COMMUNICATION SYSTEM (Proceed to How to Proceed with Troubleshooting)

2.	READ VALUE USING TECHSTREAM (MASTER SWITCH)

(a) Enter the following menus: Body Electrical / Master Switch / Data List.

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

Master Switch (Multiplex Network Master Switch Assembly)

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
P Door P/W Auto SW	Front passenger side power window auto up/down switch signal / ON or OFF	ON: Front passenger side power window auto switch operated OFF: Front passenger side power window auto switch not operated	-
P Door P/W Up SW	Front passenger side power window manual up switch signal / ON or OFF	ON: Front passenger side power window manual up switch operated OFF: Front passenger side power window manual up switch not operated	-
P Door P/W Down SW	Front passenger side power window manual down switch signal / ON or OFF	ON: Front passenger side power window manual down switch operated OFF: Front passenger side power window manual down switch not operated	-
Window Lock Switch Status	Window lock switch signal / ON or OFF	ON: Window lock switch LOCK position OFF: Window lock switch UNLOCK position	-

OK:

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

Result

Result	Proceed to
NG	A
OK (Front passenger side power window remote up/down function does not operate)	B

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch

DESCRIPTION When the engine is running or the ignition switch is ON, the front power window regulator motor assembly RH is operated by the front power window regulator switch assembly RH. The fro ...

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 ...

Other materials:

Antenna Coil Open / Short (B2784)
DESCRIPTION When an open or short circuit is detected in the antenna coil built into the transponder key coil, the transponder key ECU assembly stores this DTC. DTC No. DTC Detection Condition Trouble Area DTC Output Confirmation Operation ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (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 / Trouble Codes. (e) Check DTCs and then write them down. HINT: Refer to the Techstream operator's manual ...

Display does not Dim when Light Control Switch is Turned ON
PROCEDURE 1. CHECK IMAGE QUALITY SETTING (a) Display the "Display" screen. (b) Turn the light control switch to the tail or head position. (c) Check if "Day Mode" on the display adjustment screen is on. OK: "Day Mode" setting is of ...