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.
Front Wiper and Washer System

Symptom

Suspected Area

Link

Front wipers do not operate at all

Windshield wiper switch assembly

Windshield wiper motor assembly

Front wiper system does not operate in LO or MIST

Windshield wiper switch assembly

Windshield wiper motor assembly

Front wiper system does not operate in HI

Windshield wiper switch assembly

Windshield wiper motor assembly

Front washer system does not operate

Windshield washer motor and pump assembly

Windshield wiper switch assembly

Harness or connector

-

Front wipers do not operate when the washer fluid is sprayed with the windshield washer switch on

Windshield wiper switch assembly

Harness or connector

-

Washer fluid does not flow

Washer fluid

-

Washer hose and washer nozzle sub-assembly

Washer Fluid Level Warning System

Symptom

Suspected Area

Link

Washer fluid level warning message on the multi-information display or Indicator does not operate

Level warning switch assembly

Combination meter assembly

Harness or connector

-

Operation Check
OPERATION CHECK 1. CHECK INTERMITTENT CONTROL FUNCTION (w/ Intermittent Time Adjustment Switch) (a) Turn the ignition switch to ON. (b) Turn the windshield wiper switch assembly to the INT position ...

Wiper Switch
...

Other materials:

Power Source Mode does not Change to ON (ACC)
DESCRIPTION If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. HINT: When the cable is disconnected and reconnected to the negative (-) battery termi ...

Cruise Control System Internal Failure (P057504,P057549)
DESCRIPTION This is output when the ECM detects malfunctions in the internal circuit. DTC Code DTC Detection Condition Trouble Area MIL Note P057504 Vehicle Condition: Cruise control in operation ...

Rear Occupant Classification Sensor RH Collision Detection (B1788)
DESCRIPTION DTC B1788 is set when the occupant detection ECU receives a collision detection signal, which is sent by the occupant classification sensor rear RH when an accident occurs. DTC B1788 is also set when the front seat with adjuster frame assembly RH is subjected to a strong impact, ...

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