Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Key-off Operation Function Operates even if Operating Conditions are not Satisfied

Toyota Tacoma 2015-2018 Service Manual / Window / Glass / Power Window Control System(w/ Jam Protection Function) / Key-off Operation Function Operates even if Operating Conditions are not Satisfied

DESCRIPTION

  • When the front doors are closed, each power window regulator motor assembly can control its power window operation for approximately 43 seconds after the ignition switch is turned from ON to off by receiving operation permission signals from the main body ECU.
  • However, when approximately 43 seconds have elapsed, or the driver side door or front passenger side door is opened within approximately 43 seconds of the ignition switch being turned off, the power window regulator motor assembly stops operating.
  • During an auto operation, when 43 seconds have passed and key-off operation is prohibited, the window operation stops immediately.

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 ).
  • 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.

(c) Turn the Techstream 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 D-Door Motor

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

OK: Normal communication

STOP: Communication stopped

-

OK:

On the Techstream screen, OK is displayed.

NG

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

OK

2.

CHECK OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF

(a) Check the power window operation function after the ignition switch is turned off.

Result

Result

Proceed to

When power window can still be operated even after opening driver side door or front passenger side door within approximately 43 seconds of ignition switch being turned off

A

When power window can still be operated even after approximately 43 seconds have elapsed after ignition switch is turned off (for Front Passenger Side, Rear LH Side or Rear RH Side)

B

When power window can still be operated even after approximately 43 seconds have elapsed after ignition switch is turned off (for All Doors)

C

B

GO TO STEP 4

C

REPLACE MAIN BODY ECU

A

3.

READ VALUE USING TECHSTREAM (MAIN BODY)

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

(b) 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

FL Door Courtesy

Front door courtesy light switch LH signal / ON or OFF

ON: Driver side door closed

OFF: Driver side door open

-

FR Door Courtesy

Front door courtesy light switch RH signal / ON or OFF

ON: Front passenger side door closed

OFF: Front passenger side door open

-

OK:

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

OK

REPLACE MAIN BODY ECU

NG

GO TO LIGHTING SYSTEM (Proceed to Door Courtesy Switch Circuit)

4.

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (KEY-OFF OPERATION FUNCTIONING WINDOW)

(a) Replace the power window regulator motor assembly (See page for Front Door) for the window that still operates for Front Door) for the window that still operates when more than 43 seconds have elapsed after the ignition switch was turned off. for Front Door) for the window that still operates when more than 43 seconds have elapsed after the ignition switch was turned off.

NEXT

5.

PERFORM INITIALIZATION (APPLICABLE LOCATION)

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

NEXT

6.

CHECK OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF

(a) Check the power window operation function after the ignition switch is turned off.

OK:

The power window does not operate when more than 43 seconds have elapsed after the ignition switch was turned off.

OK

END (POWER WINDOW REGULATOR MOTOR ASSEMBLY WAS DEFECTIVE)

NG

REPLACE MAIN BODY ECU

Front Passenger Side Power Window Auto Up / Down Function does not Operate with Front Passenger Side Power Window Switch
DESCRIPTION If the manual up/down function can be performed but the auto up/down function cannot, the fail-safe mode may be functioning. If the power window initialization (See page ) has not b ...

Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)
DESCRIPTION If a front door glass or the power window regulator motor assembly (for driver door) or power window regulator motor assembly (front passenger door) does not operate smoothly, the cat ...

Other materials:

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the T14 tire pressure warning ECU and receiver connector and measure the voltage and resistance on the wire harness side. Text in Illustration *A w/o Wireless Door Lock System ...

Short in Side Squib LH Circuit (B1825/56-B1828/56)
DESCRIPTION The side squib LH circuit consists of the airbag sensor assembly and the front seat airbag assembly LH. This circuit signals the SRS to deploy when airbag deployment conditions are met. These DTCs are set when a malfunction is detected in the side squib LH circuit. DTC ...

Steering Angle Sensor (C1A47)
DESCRIPTION The forward recognition camera receives steering angle information from the spiral cable with sensor sub-assembly. If the forward recognition camera detects a spiral cable with sensor sub-assembly malfunction, DTC C1A47 is stored. DTC No. Detection Item ...

В© 2011-2021 Copyright www.ttguide.net