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:

Front Occupant Classification Sensor LH Collision Detection (B1785)
DESCRIPTION DTC B1785 is set when the occupant detection ECU receives a collision detection signal, which is sent by the occupant classification sensor front LH when an accident occurs. DTC B1785 is also set when the front seat with adjuster frame assembly RH is subjected to a strong impact, ...

Vehicle data recordings
Your Toyota is equipped with several sophisticated computers that will record certain data, such as: • Engine speed • Accelerator status • Brake status • Vehicle speed • Shift position (except manual transmission) The recorded data varies according to the vehicle grade level and opt ...

If your vehicle overheats
The following may indicate that your vehicle is overheating. ● The needle of the engine coolant temperature gauge (→P. 155) enters the red zone or a loss of engine power is experienced. (For example, the vehicle speed does not increase.) ● Steam comes out from under the hood. ...

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