Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Power Window Control System

Symptom

Suspected Area

See page

Remote Up / Down Function does not Operate

Proceed to "Remote Up / Down Function does not Operate"

Driver Side Power Window does not Operate with Power Window Regulator Master Switch Assembly

Proceed to "Driver Side Power Window does not Operate with Power Window Master Switch"

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

Proceed to "Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch"

Rear Power Window LH does not Operate with Rear Power Window Switch LH*1

Rear power window regulator switch assembly LH

Rear power window regulator motor assembly LH

Power window regulator master switch assembly

Harness or connector

-

Rear Power Window RH does not Operate with Rear Power Window Switch RH*1

Rear power window regulator switch assembly RH

Rear power window regulator motor assembly RH

Power window regulator master switch assembly

Harness or connector

-

Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Regulator Master Switch Assembly

Proceed to "Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch"

Front Passenger Side Power Window Auto Up / Down Function does not Operate with Front Passenger Side Power Window Switch

Proceed to "Front Passenger Side Power Window Auto Up / Down Function does not Operate with Front Passenger Side Power Window Switch"

Key-off Operation Function Operates even if Operating Conditions are not Satisfied

Proceed to "Key-off Operation Function Operates even if Operating Conditions are not Satisfied"

Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)

Proceed to "Auto Up Operation does not Fully Close Power Window (Jam Protection Function is Activated)"

Auto down operation does not fully open power window (catch protection function is activated)

Proceed to "Auto Down Operation does not Fully Open Power Window (Catch Protection Function is Activated)"

Jam Protection Function does not Operate

Proceed to "Jam Protection Function does not Operate"

  • *1: for Double Cab
Power Window Control System (for back door power window)*1

Symptom

Suspected Area

See page

Power back window does not operate

Rear NO. 2 Power Window Regulator Switch Assembly

Power Window Regulator Motor Assembly

Main body ECU (driver side junction block)

Harness or connector

-

  • *1: w/ Back Door Power Window
Operation Check
OPERATION CHECK 1. CHECK WINDOW LOCK SWITCH HINT: Before performing the window lock switch operation check, make sure that the window lock switch is off (the switch is not pushed in). (a) Check ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION (a) The power window control system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techs ...

Other materials:

Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedures for both the LH and RH sides. The procedure described below is for the LH side. PROCEDURE 1. REMOVE FRONT DOOR LOWER FRAME BRACKET GARNISH 2. REMOVE FRONT DOOR INSIDE HANDLE BEZEL PLUG 3. REMOVE FRONT ...

Front Passenger Side Seat Belt Warning Light Malfunction
DESCRIPTION The occupant classification ECU detects the state of the front seat inner belt assembly RH and load sensor when the front passenger side seat is occupied with the ignition switch ON. If the front passenger side seat belt is not fastened, the front passenger side seat belt warning ...

Check Bus 2 Line for Short to +B
DESCRIPTION There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminal 18 (CA4H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 17 (CA4L) of the central gateway ECU (network gateway ECU) and ...

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