Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

  • Before replacing the ECM, refer to Registration.

    w/ Smart Key System: Click here w/o Smart Key System: Click here

    w/o Smart Key System: Click here

  • When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

    Click here

  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
  • If the forward recognition camera has been replaced with a new one, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

    Click here

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.
Dynamic Radar Cruise Control System

Symptom

Suspected Area

Link

The dynamic radar cruise control system cannot be turned on using the cruise control main switch (ON-OFF button)

CAN communication system

Cruise control switch circuit

Cruise main indicator light circuit

Combination meter assembly

Millimeter wave radar sensor assembly

ECM

The dynamic radar cruise control mode cannot be changed between vehicle-to-vehicle distance control mode and constant speed control mode

CAN communication system

Cruise control switch circuit

Combination meter assembly

ECM

The vehicle-to-vehicle distance cannot be changed

CAN communication system

Distance control switch circuit

Combination meter assembly

Millimeter wave radar sensor assembly

Forward recognition camera

ECM

Vehicle speed setting cannot be performed (in constant speed control mode)

Fail-safe chart

CAN communication system

Cruise control switch circuit

Stop light switch circuit

Automatic transmission system (for AC60E)

Automatic transmission system (for AC60F)

Vehicle stability control system

ECM

Vehicle speed setting cannot be performed (in vehicle-to-vehicle distance control mode)

Perform millimeter wave radar sensor assembly adjustment*

Fail-safe chart

Forward recognition camera is temporarily unavailable

Millimeter wave radar sensor is dirty

Millimeter wave radar sensor assembly beam axis not adjusted

CAN communication system

Cruise control switch circuit

Automatic transmission system (for AC60E)

Automatic transmission system (for AC60F)

Millimeter wave radar sensor assembly

Forward recognition camera

Vehicle stability control system

Combination meter assembly

ECM

Control of vehicle speed by the dynamic radar cruise control system is canceled (in constant speed control mode)

Fail-safe chart

CAN communication system

Cruise control switch circuit

Stop light switch circuit

Automatic transmission system (for AC60E)

Automatic transmission system (for AC60F)

Vehicle stability control system

ECM

Control of vehicle speed by the dynamic radar cruise control system is canceled (in vehicle-to-vehicle distance control mode)

Perform millimeter wave radar sensor assembly adjustment*

Fail-safe chart

Forward recognition camera is temporarily unavailable

Millimeter wave radar sensor is dirty

Millimeter wave radar sensor assembly beam axis not adjusted

CAN communication system

Cruise control switch circuit

Automatic transmission system (for AC60E)

Automatic transmission system (for AC60F)

Millimeter wave radar sensor assembly

Forward recognition camera

Vehicle stability control system

Combination meter assembly

ECM

Hunting/vehicle speed is not constant (in constant speed control mode)

CAN communication system

Vehicle stability control system

ECM

Hunting/vehicle speed is not constant (in vehicle-to-vehicle distance control mode)

Millimeter wave radar sensor assembly is dirty

Millimeter wave radar sensor assembly beam axis not adjusted

CAN communication system

Vehicle stability control system

Millimeter wave radar sensor assembly

ECM

Pulling the cruise control main switch to CANCEL does not cancel control of vehicle speed by the dynamic radar cruise control system

Cruise control switch circuit

ECM

Moving the shift lever does not cancel control of vehicle speed by the dynamic radar cruise control system

Park/neutral position switch assembly (for AC60E)

Park/neutral position switch assembly (for AC60F)

Shift lock control unit assembly (for AC60E)

Shift lock control unit assembly (for AC60F)

Automatic transmission system (for AC60E)

Automatic transmission system (for AC60F)

ECM

Depressing the brake pedal does not cancel control of vehicle speed by the dynamic radar cruise control system

Stop light switch circuit

ECM

Even though the millimeter wave radar sensor is not dirty, the warning message "Clean Sensor" is displayed

Millimeter wave radar sensor assembly

The vehicle approach warning buzzer does not sound

Skid control buzzer circuit

Check millimeter wave radar sensor assembly installation position

Check installation of forward recognition camera

Forward recognition camera

Millimeter wave radar sensor assembly

Even though the vehicle approach warning buzzer is sounding, brake control is not performed when decelerating

CAN communication system

Vehicle stability control system

Millimeter wave radar sensor assembly

ECM

Even though the SET function is operating, the cruise SET indicator does not illuminate

CAN communication system

Cruise SET indicator light circuit

Combination meter assembly

ECM

The cruise control indicator remains illuminated

CAN communication system

Combination meter assembly

ECM

Indicators are not illuminated on the multi-information display in the combination meter assembly

CAN communication system

Combination meter assembly

ECM

The buzzer does not sound when control of vehicle speed by the dynamic radar cruise control is canceled

CAN communication system

Combination meter assembly

ECM

*: If error code 7 is output during beam axis alignment, clear the DTCs and perform beam axis alignment again.

Operation Check
OPERATION CHECK INPUT SIGNAL CHECK *a +RES *b -SET *c ON-OFF *d CANCEL (a) Conne ...

Terminals Of Ecu
TERMINALS OF ECU CHECK ECM HINT: The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each p ...

Other materials:

Data List / Active Test
DATA LIST / ACTIVE TEST READ DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows ...

Steering Lock Position Signal Circuit Malfunction (B2285)
DESCRIPTION This DTC is stored when the steering lock position signal sent by the steering lock ECU (steering lock actuator or upr bracket assembly) via direct line and the steering lock position signal sent via LIN communication do not match. HINT: When the cable is disconnected and reconnec ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION (a) Smart key system (for entry function) data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the smart key system. When the system seems to be malfunctioning, ...

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