Toyota Tacoma (2015-2018) Service Manual: Problem Symptoms Table

Toyota Tacoma (2015-2018) Service Manual / Navigation / Multi Info Display / Navigation System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary (w/ SDARS System).

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.

Display Function

Symptom	Suspected Area	See page
Pressing power switch does not turn on system	Proceed to "Radio Receiver Power Source Circuit"
	Proceed to "Check Software Error History" in Operation Check
	Navigation receiver assembly
Black screen (No image appears on navigation/audio screen)	Proceed to "Black Screen"
Black screen (No image appears on navigation/audio screen)	Navigation receiver assembly
Display does not dim (does not change to night screen) with tail switch on	Proceed to "Display does not Dim when Light Control Switch is Turned ON"
	Proceed to "Illumination Circuit"
	Navigation receiver assembly
Power does not turn off (Screen remains on)	Proceed to "Radio Receiver Power Source Circuit"
Power does not turn off (Screen remains on)	Navigation receiver assembly
Screen is distorted	Proceed to "Radio Receiver Power Source Circuit"
Screen is distorted	Navigation receiver assembly
Screen flicker or color distortion	Proceed to "Screen Flicker or Color Distortion"
	Proceed to "Radio Receiver Power Source Circuit"
	Navigation receiver assembly

Panel Switch and Touch Switch Function

Symptom	Suspected Area	See page
Illumination for panel switches does not come on with tail switch on	Proceed to "Illumination for Panel Switch does not Come on with Tail Switch ON"
	Proceed to "Illumination Circuit"
	Navigation receiver assembly
Panel switches do not function	Proceed to "Panel Switches do not Function"
	Proceed to "Radio Receiver Power Source Circuit"
	Navigation receiver assembly
Touch panel switch does not function	Proceed to "Touch Panel Switch does not Function"
	Proceed to "Radio Receiver Power Source Circuit"
	Navigation receiver assembly
Navigation function switches can be operated while vehicle is driving	Proceed to "Parking Brake Switch Circuit"
	Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter"
	Navigation receiver assembly

Steering Pad Switch Function

Symptom	Suspected Area	See page
System cannot be operated by steering pad switch	Proceed to "Panel Switches do not Function"
	Proceed to "Steering Pad Switch Circuit"
	Navigation receiver assembly
Illumination for steering pad switch does not come on with tail switch on	Proceed to "Illumination Circuit"
	Navigation receiver assembly

Navigation Function

Symptom	Suspected Area	See page
Vehicle position mark deviates	Proceed to "Vehicle Position Mark Deviates Greatly"
	Antenna assembly with holder
	Navigation receiver assembly
Vehicle position mark deviates from correct position and does not return to correct position	Proceed to "Vehicle Position Mark Deviates Greatly"
	Antenna assembly with holder
	Navigation receiver assembly
Vehicle position mark moves slow or fast	Proceed to "Vehicle Position Mark Deviates Greatly"
	Drive the vehicle for sensor learning (At a place where GPS signals can be received, drive the vehicle clockwise and counterclockwise in at least a 200 meter square 2 times or more)	-
	Antenna assembly with holder
	Navigation receiver assembly
Cursor or map rotates when vehicle is stopped	Proceed to "Cursor or Map Rotates when Vehicle Stopped"
Cursor or map rotates when vehicle is stopped	Navigation receiver assembly
Vehicle position mark moves in the opposite direction to the vehicle	Proceed to "Cursor or Map Rotates when Vehicle Stopped"
	Proceed to "Reverse Signal Circuit"
	Navigation receiver assembly
Vehicle position mark deviates from and returns to correct position repeatedly even though GPS mark is displayed	Proceed to "GPS Mark is not Displayed"
	Drive the vehicle for sensor learning (at a place where GPS signals can be received, drive the vehicle clockwise and counterclockwise in at least a 200 meter square 2 times or more)	-
	Navigation antenna assembly
	Navigation receiver assembly
Vehicle position mark moves slow or fast	Proceed to "GPS Mark is not Displayed"
	Navigation antenna assembly
	Navigation receiver assembly
Vehicle position mark moves in the opposite direction to the vehicle	Proceed to "Cursor or Map Rotates when Vehicle Stopped"
	Proceed to "Reverse Signal Circuit"
	Navigation receiver assembly
Vehicle position mark is not updated	Navigation receiver assembly
Current position display does not appear	Antenna assembly with holder
Current position display does not appear	Navigation receiver assembly
Voice guidance does not function	Proceed to "Voice Guidance does not Function"
	Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier"
	Proceed to "Speaker Circuit"
	Navigation receiver assembly
	Stereo component amplifier assembly*1
Map display is incomplete	SD card	-
Map display is incomplete	Navigation receiver assembly
Route cannot be calculated	Proceed to "Route cannot be Calculated"
Route cannot be calculated	Navigation receiver assembly
Navigation system cannot record memory point registration or each item setting	Navigation receiver assembly
A message indicating to wait for a while because of low temperature is displayed	Start the engine and increase cabin temperature (near navigation receiver assembly)	-
	SD card (disc player disc)	-
	Navigation receiver assembly
A message is displayed because map data cannot be read, and current position screen is not displayed	If a message appears only when driving on rough roads, check if the message disappears when vehicle is stopped	-
	SD card (disc player disc)	-
	Navigation receiver assembly
Map screen turns white or blue (GPS receiving status is displayed normally, and switches and own vehicle position mark are also displayed normally)	Change map scale to the smallest (a scale that shows a large area)	-
	SD card (disc player disc)	-
	Navigation receiver assembly
Traffic information is not displayed	Proceed to "Traffic Information is not Displayed"
Customize parameters cannot be changed (customize parameters can be changed by using the Techstream)	Navigation receiver assembly
Parking brake switch signal does not change in vehicle signal check mode	Proceed to "Parking Brake Switch Circuit"
	Navigation receiver assembly
Reverse signal does not change in vehicle signal check mode	Proceed to "Reverse Signal Circuit"
Reverse signal does not change in vehicle signal check mode	Navigation receiver assembly

*1: w/ Stereo Component Amplifier

General Audio Function

Symptom	Suspected Area	See page
No sound can be heard from speakers	Proceed to "No Sound can be Heard from Speakers"
	Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier"*1
	Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier"*1
	Proceed to "Speaker Circuit"
	Proceed to "Stereo Component Amplifier Power Source Circuit"*1
	Stereo component amplifier assembly*1
	Navigation receiver assembly
Abnormal noise occurs	Proceed to "Noise Occurs"
	Stereo component amplifier assembly*1
	Navigation receiver assembly
Sound quality is bad in all modes (Volume is too low)	Proceed to "Poor Sound Quality in All Modes (Low Volume)"
	Proceed to "Mute Signal Circuit between Radio Receiver and Stereo Component Amplifier"*1
	Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier"*1
	Proceed to "Speaker Circuit"
	Stereo component amplifier assembly*1
	Navigation receiver assembly
ASL does not function	Check that the ASL function is on	-
	Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter"*1
	Proceed to "Vehicle Speed Signal Circuit between Stereo Component Amplifier and Combination Meter"*1
	Stereo component amplifier assembly*1
	Navigation receiver assembly

*1: w/ Stereo Component Amplifier

FM or AM Radio Function

Symptom	Suspected Area	See page
Radio broadcast cannot be received or poor reception	Proceed to "Radio Broadcast cannot be Received or Poor Reception"
Radio broadcast can be received but radio station cannot be displayed (Some radio stations do not provide their name information)	Navigation receiver assembly
Radio broadcast can be displayed but radio broadcast cannot be heard from speakers	Check the volume settings	-
	Navigation receiver assembly
Radio broadcast can be received but station list cannot be displayed	Wait for 120 seconds in radio mode, and select the "Refresh" switch on the station list screen	-
	Navigation receiver assembly
Radio broadcast can be received but station list cannot be updated	Select "Refresh" on the station list screen	-
	Wait for 10 minutes with the ignition switch ACC, and select the "Refresh" switch on the station list screen again	-
	Navigation receiver assembly
After the voice recognition function or hands-free function is turned off, the cache radio does not operate	Check that the cache radio setting is on	-
	Navigation receiver assembly
When the cache radio is playing, sound is interrupted, sound cannot be heard or sound quality is poor	Check if similar symptoms occur when receiving conventional FM/AM radio broadcasts	-
	Check if similar symptoms occur when receiving other broadcasts	-
	Move the vehicle to a place where the reception sensitivity is good and check again	-
	Navigation receiver assembly
When the cache radio is playing, sound can be heard, but no information is displayed (some radio stations do not provide their name information)	Check if similar symptoms occur when receiving other broadcasts	-
	Move the vehicle to a place where the reception sensitivity is good and check again	-
	Navigation receiver assembly

"HD Radio" Function (w/ "HD Radio" Function)

Symptom	Suspected Area	See page
Only "HD Radio" stations cannot be heard or selected, or their analog or digital sound cannot be changed	Check the "HD Radio" settings	-
	Navigation receiver assembly
"iPod" tagging function cannot be used	Check if a message indicating that the capacity for tag information is full is displayed	-
	Check that the cache radio is not playing (when the cache radio is playing, "iPod" tagging function cannot be used)	-
	Proceed to "USB Audio System Recognition/ Play Error"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly
When the "HD Radio" is playing, cover art is not displayed	When a song unregistered to the Gracenote CDDB is playing or cover art information is not provided by the broadcast station, its cover art cannot be displayed	-
When the "HD Radio" is playing, cover art cannot be displayed	Navigation receiver assembly
Broadcast station logo cannot be displayed	Check if similar symptoms occur when receiving other broadcasts	-
	Check if similar symptoms occur with another vehicle	-
	Navigation receiver assembly
SPS channel cannot be selected	Check that "HD Radio" FM mode is selected	-
	After selecting "Refresh", check that the SPS channel is on the station list	-
	Navigation receiver assembly
When the SPS channel is selected, sound cannot be heard	After selecting "Refresh", select the SPS channel on the station list	-
When the SPS channel is selected, sound cannot be heard	Navigation receiver assembly

CD Player Function

Symptom	Suspected Area	See page
CD cannot be played or player does not function with disc	Proceed to "Disc Player Outline" in System Description and check if the disc is compatible with the disc player
	Proceed to "Check Optical Disc Error History" in Operation Check
	Navigation receiver assembly
CD cannot be inserted/played or CD is ejected right after insertion	Proceed to "Check Optical Disc Error History" in Operation Check
	Proceed to "CD cannot be Inserted / Played or CD is Ejected Right After Insertion"
CD cannot be ejected	Proceed to "Check Optical Disc Error History" in Operation Check
CD cannot be ejected	Proceed to "CD cannot be Ejected"
CD sound skips	Proceed to "Check Optical Disc Error History" in Operation Check
CD sound skips	Proceed to "CD Sound Skips"
Sound quality is bad only when CD is played (Volume is too low)	Proceed to "Check Optical Disc Error History" in Operation Check
	Proceed to "Sound Quality is Bad Only when CD is Played (Volume is Too Low)"
When CD is playing, some cover art is not displayed	When a song unregistered to the Gracenote CDDB is playing, its cover art cannot be displayed	-
When CD is playing, cover art cannot be displayed	Navigation receiver assembly
Album cover art cannot be displayed	Check that Display Cover Art on the disc settings screen is set to on	-
	Check if similar symptoms occur with another vehicle	-
	If an indication to update the Gracenote database appears on the album cover art screen and update data has been downloaded to the navigation receiver assembly, update the Gracenote database to the latest version	-
	Navigation receiver assembly

AUX Function

Symptom	Suspected Area	See page
External device sound cannot be heard or sound quality is bad (Stereo jack is used)	Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly
"AUX" is not displayed on system check mode screen	Proceed to "Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly

Voice Recognition Function

Symptom	Suspected Area	See page
Voice menu screen is not displayed (Voice recognition function does not turn on)	Check if the voice recognition prompts function is "On"	-
	Proceed to "Panel Switches do not Function"
	Proceed to "Steering Pad Switch Circuit"
	Navigation receiver assembly
When voice recognition switch is pressed, a short beep is emitted but voice cannot be recognized properly	Proceed to "Voice is not Recognized"
	Proceed to "Microphone Circuit between Microphone and Radio Receiver"
	SD card	-
	Navigation receiver assembly
Mobile Assistant function does not work (w/ Mobile Assistant Function)	Check if the "Siri" voice recognition application can be used on the device	-
	Check if a hard reset of the device corrects the problem	-
	Proceed to "Steering Pad Switch Circuit"
	Proceed to "Voice is not Recognized"
	Proceed to "Microphone Circuit between Microphone and Navigation Receiver Assembly"
	Navigation receiver assembly

"Bluetooth" Hands-free Function

Symptom	Suspected Area	See page
Bluetooth is inoperative	Proceed to "Microphone Circuit between Microphone and Radio Receiver"
Bluetooth is inoperative	Navigation receiver assembly
Cellular phone registration failure	Proceed to "Cellular Phone Registration Failure, Phone Directory Transfer Failure"
Cellular phone registration failure	Navigation receiver assembly
Cellular phone cannot make outgoing/incoming calls or call in a certain place	Proceed to "Cellular Phone cannot Send/Receive"
	Proceed to "Steering Pad Switch Circuit"
	Navigation receiver assembly
Message that prompts to check the cellular phone is displayed	Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls"
	Navigation receiver assembly
Phonebook data cannot be transferred manually or automatically	Check the automatically download contact setting	-
	When transferring phonebook data, OBEX authentication may be required. Enter "1234" into the "Bluetooth" phone	-
	Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure"
	Navigation receiver assembly
E-mail/SMS cannot be received or sent	Check whether massages can be received/sent using the cellular phone	-
	Check that the phone is registered as a hands-free device	-
	Check the sending and receiving e-mails/SMS via the navigation system setting	-
	Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure"
	Navigation receiver assembly

"Bluetooth" Audio Function

Symptom	Suspected Area	See page
Portable player cannot be registered	Proceed to "Portable Player cannot be Registered"
Portable player cannot be registered	Navigation receiver assembly
Portable player cannot be connected manually/automatically	Proceed to "Portable Player cannot be Registered"
	Proceed to "Portable Player cannot be Connected Manually/Automatically"
	Navigation receiver assembly
Cellular phone with portable audio function cannot be recognized as "Bluetooth" audio device even when connected using "Bluetooth"	Proceed to "Portable Player cannot be Registered"
	Proceed to "Portable Player cannot be Connected Manually/Automatically"
	Navigation receiver assembly
Sound of portable player cannot be heard from speakers, or sound is low	Proceed to "Sound of Portable Player cannot be Heard from Speakers or Sound is Low"
	Navigation receiver assembly
Portable player does not play even after "Bluetooth" audio mode is selected	Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"
	Navigation receiver assembly
Portable player does not play	Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"
Portable player does not play	Navigation receiver assembly
Track information such as track number, track name and elapsed play time and playlist is not displayed	Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"
	Navigation receiver assembly
Operation switches for portable player such as play, pause, repeat, random and scan are not displayed	Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"
	Navigation receiver assembly
Battery condition of portable player is not displayed	Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"
Battery condition of portable player is not displayed	Navigation receiver assembly
"Bluetooth" signal condition is not displayed	Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"
"Bluetooth" signal condition is not displayed	Navigation receiver assembly
Portable player cannot pause, select file, fast forward, fast rewind, play at random or scan	Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"
	Navigation receiver assembly
Noise occurs or sound skips when portable player plays	Proceed to "Noise Occurs or Sound Skips when Portable Player Plays"
Noise occurs or sound skips when portable player plays	Navigation receiver assembly
Registered device cannot be deleted	Proceed to "Registered Device cannot be Deleted"
Registered device cannot be deleted	Navigation receiver assembly

USB Audio System Function

Symptom	Suspected Area	See page
USB audio system sound cannot be heard or sound quality is bad (USB connector is used)	Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly
USB device or "iPod" is not recognized	Proceed to "USB Audio System Recognition/Play Error"
	Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly
Track information such as track, artist and album names are not displayed	Proceed to "USB Audio System Recognition/Play Error"
	Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly
USB device or "iPod" is recognized but cannot play nor play in a sorted order	Proceed to "USB Audio System Recognition/Play Error"
	Proceed to "Data Signal Circuit between Stereo Jack Adapter and Extension Module"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly
Album cover art cannot be displayed	Check that display cover art on the "iPod" Settings screen is set to on	-
Album cover art cannot be displayed	Check that a JPEG file is used for the cover art	-
"iPod" battery cannot be charged	Proceed to "USB Audio System Recognition/Play Error"
	No. 1 stereo jack adapter assembly
	Navigation receiver assembly

SDARS System Function (w/ SDARS System)

Symptom	Suspected Area	See page
Satellite radio broadcast cannot be received or reception is bad	Proceed to "Satellite Radio Broadcast cannot be Received"
	Stereo component tuner assembly
	Navigation receiver assembly
Satellite radio cannot receive pay-type broadcasts	Proceed to "Satellite Radio Broadcast cannot be Received"
	Stereo component tuner assembly
	Navigation receiver assembly
Satellite radio broadcast cannot be selected or after selecting broadcast, broadcast cannot be added into memory	Proceed to "Satellite Radio Broadcast cannot be Received"
	Proceed to "Satellite Radio Broadcast cannot be Selected or After Selecting Broadcast, Broadcast cannot be Added into Memory"
	Stereo component tuner assembly
	Navigation receiver assembly
Satellite radio can be displayed but radio broadcast cannot be heard from speakers	Check the volume settings	-
	Proceed to "Satellite Radio Broadcast cannot be Received"
	Stereo component tuner assembly
	Navigation receiver assembly
Broadcast station logo cannot be displayed	Proceed to "Satellite Radio Broadcast cannot be Received"
	Proceed to "Data Signal Circuit between Navigation Receiver Assembly and Extension Module"
	Stereo component tuner assembly
	Navigation receiver assembly
Satellite radio text information cannot be displayed	Proceed to "Satellite Radio Broadcast cannot be Received"
	Stereo component tuner assembly
	Navigation receiver assembly
Satellite radio broadcast station cannot be selected (scan cannot be performed)	Proceed to "Satellite Radio Broadcast cannot be Received"
	Stereo component tuner assembly
	Navigation receiver assembly
When the satellite radio is playing, some cover art is not displayed	When a song unregistered to the Gracenote CDDB is playing, its cover art cannot be displayed	-
When the satellite radio is playing, cover art cannot be displayed	Navigation receiver assembly

Fuel Consumption Function

Symptom	Suspected Area	See page
"Fuel Consumption" icon is dimmed	Check if other icons or items displayed on screen have any problems	-
"Fuel Consumption" icon is dimmed	Navigation receiver assembly
Graph is not displayed on "Trip Information" screen	Recheck with the engine running	-
Graph is not displayed on "Trip Information" screen	Navigation receiver assembly
Cruise range is not displayed on "Trip Information" screen	Turn the ignition switch to ON and recheck	-
Cruise range is not displayed on "Trip Information" screen	Navigation receiver assembly
Graph is not updated on "Past record" screen even though "Clear" is selected	Turn the ignition switch to ON and recheck	-
	Navigation receiver assembly
Graph is not displayed on "Past record" screen	Turn the ignition switch to ON and recheck	-
Graph is not displayed on "Past record" screen	Navigation receiver assembly

Entune App Suite Function (w/ Entune App Suite Function)

Symptom	Suspected Area	See page
An Entune App Suite system error message is displayed on the screen	Follow on screen instructions	-
	Proceed to "Confirm Cellular Phone Functionality"
	Proceed to "Confirm Vehicle Headunit Functionality"
	Proceed to "Entune App Suite Reset Procedure" in Operation Check
	Navigation receiver assembly
Entune App Suite apps and services are not operating as expected	Proceed to "Confirm Cellular Phone Functionality"
	Proceed to "Confirm Vehicle Headunit Functionality"
	Proceed to "Entune App Suite Reset Procedure" in Operation Check
	Navigation receiver assembly
Entune App Suite voice recognition is not possible (voice recognition on the navigation system is normal)	Proceed to "Confirm Cellular Phone Functionality"
	Proceed to "Confirm Vehicle Headunit Functionality"
	Proceed to "Entune App Suite Reset Procedure" in Operation Check
	Navigation receiver assembly
Poor sound quality of Entune App Suite system	Confirm that cellular phone handset volume is turned up	-
	Confirm that adequate signal is maintained during driving	-
	Proceed to "Confirm Cellular Phone Functionality"
	Proceed to "Confirm Vehicle Headunit Functionality"
	Proceed to "Entune App Suite Reset Procedure" in Operation Check
	Navigation receiver assembly

Operation Check

OPERATION CHECK 1. CHECK NAVIGATION SYSTEM NORMAL CONDITION (a) If the symptom is applicable to any of the following, it is intended behavior, and not a malfunction. Symptom ...

Terminals Of Ecu

TERMINALS OF ECU 1. NAVIGATION RECEIVER ASSEMBLY Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition ...

Other materials:

Rear Sensor Communication Malfunction (C1AED)
DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor. DTC No. DTC Detection Condition Trouble Area C1AED ...

Dtc Check / Clear
DTC CHECK / CLEAR HINT: When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins. Refer to the T ...

Removal
REMOVAL PROCEDURE 1. REMOVE RADIATOR GRILLE (a) w/ Toyota Safety Sense P (1) Disconnect the connector. (2) Disengage the clamp. (b) Put protective tape around the radiator grille. ...