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.
  • The pre-collision system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
Pre-collision System

Symptom

Suspected Area

Link

"Pre-Collision System Unavailable" is displayed

Perform millimeter wave radar sensor assembly adjustment*1

Millimeter wave radar sensor assembly

Combination meter assembly

"Pre-Collision System Unavailable Clean Sensor" is displayed

Foreign matter attached to millimeter wave radar sensor assembly

-

Millimeter wave radar sensor assembly

Combination meter assembly

"Front Camera Unavailable" is displayed

Check current condition of forward recognition camera based on related Data List items.

  • Abnormal forward recognition camera voltage
  • Forward recognition camera temperature outside of operational range

Forward recognition camera

Combination meter assembly

Millimeter wave radar sensor assembly

"Front Camera Unavailable Remove Debris On Windshield" is displayed

The forward recognition camera or windshield glass within the field of view of the forward recognition camera is dirty or fogged up

-

Forward recognition camera

Combination meter assembly

Millimeter wave radar sensor assembly

Although there is possibility of collision, pre-collision controls (all controls) do not operate ("Pre-collision System Unavailable" is not displayed)

Check if pre-collision system is canceled

-

Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions)

Check installation condition of millimeter wave radar sensor assembly

Perform millimeter wave radar sensor assembly adjustment

Millimeter wave radar sensor assembly

Check installation condition of forward recognition camera

Perform forward recognition camera adjustment

Forward recognition camera

Although there is no possibility of collision, pre-collision controls (all controls) operate

Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions)

Check installation condition of millimeter wave radar sensor assembly

Perform millimeter wave radar sensor assembly adjustment

Millimeter wave radar sensor assembly

Check installation condition of forward recognition camera

Perform forward recognition camera adjustment

Forward recognition camera

Pre-collision system does not operate

Check if pre-collision system is canceled

-

ECU power source circuit

Millimeter wave radar sensor assembly

Pre-collision system cannot be canceled (PCS warning light does not illuminate)

Check steering pad switch assembly condition

-

Combination meter assembly (check if indicator illuminates using Active Test)

Millimeter wave radar sensor assembly

Combination meter assembly

Pre-collision system warning timing cannot be changed (warning timing setting screen not displayed on multi-information display)

Millimeter wave radar sensor assembly

Combination meter assembly

  • *1: If error code 7 is output during beam axis alignment, clear the DTCs and perform beam axis alignment again.
Operation Check
OPERATION CHECK CHECK PRE-COLLISION SYSTEM SETTING (a) Turn the ignition switch to ON. (b) Operate the steering pad switch assembly to change the setting of PCS on the multi-information display t ...

Terminals Of Ecu
TERMINALS OF ECU CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY (a) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wir ...

Other materials:

Front Passenger Side Seat Heater does not Operate
DESCRIPTION When the seat heater switch on the air conditioning control assembly is operated, the air conditioning amplifier assembly receives the signal. The air conditioning amplifier assembly receives the signal and operates the front seat heater. WIRING DIAGRAM CAUTION / NOTICE / HINT ...

Power Source Mode does not Change to ON (IG)
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 ...

Components
COMPONENTS ILLUSTRATION *A w/o Navigation System *B w/ Navigation System *C for Double Cab *D for Acces Cab *E for 4WD - - *1 ...

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