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:

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals ...

Lost Communication with Power Source Control (B278C)
DESCRIPTION DTC No. DTC Detection Condition Trouble Area B278C An internal malfunction occurs in the certification ECU (smart key ECU assembly) Certification ECU (smart key ECU assembly) CAUTI ...

Front Blower Resistor
Inspection INSPECTION PROCEDURE 1. INSPECT BLOWER RESISTOR (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified ...

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