Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Dtc Check / Clear

DTC CHECK / CLEAR

1. CHECK DTC (CHECK USING TECHSTREAM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Navigation System / Trouble Codes.

(e) Check for DTCs, and then write them down.

(f) Check the details of the DTC(s) (See page ). NOTICE: ).

NOTICE:

The audio and visual system outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the audio and visual system are output, refer to Diagnostic Trouble Code Chart for the relevant system.

System

Proceed to

Rear View Monitor System

2. CLEAR DTC (CLEAR USING TECHSTREAM)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Navigation System / Trouble Codes.

(e) Clear the DTCs.

3. START DIAGNOSTIC MODE

HINT:

  • Illustrations may differ from the actual vehicle screen depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle screen.
  • After the ignition switch is turned to ON, check that the map is displayed before starting diagnostic mode. Otherwise, some items cannot be checked.

(a) There are 2 methods to start diagnostic mode. Start diagnostic mode by using either of them.

(b) Method 1

(1) Turn the ignition switch to ON.

(2) While pressing and holding the "AUDIO" switch, operate the light control switch: Off → Tail → Off → Tail → Off → Tail → Off.

(c) Method 2

(1) Turn the ignition switch to ON.

(2) Press the seek/track up panel switch 5 times and then press the seek/track down panel switch 5 times with the screen and audio turned off.

HINT:

  • Diagnostic mode can only be started if the above operation is completed within 15 seconds of the first press of the seek/track up panel switch.
  • If the operation is not completed within 15 seconds of the first press of the seek/track panel switch or fails, turn the screen and audio on and then off again before attempting to start diagnostic mode.

(d) Diagnostic mode starts and the "Service Menu" screen will be displayed. Service inspection starts automatically and the result will be displayed.

4. FAILURE DIAGNOSIS

(a) The "Failure Diagnosis" screen will be displayed by pressing the "Failure Diagnosis" switch on the "Service Menu" screen.

5. SYSTEM CHECK

5. SYSTEM CHECK

(a) The "System Check Mode" screen will be displayed by pressing the "System Check" switch on the "Failure Diagnosis" screen.

6. CHECK DTC (CHECK USING SYSTEM CHECK MODE SCREEN)

6. CHECK DTC (CHECK USING SYSTEM CHECK MODE SCREEN)

(a) System check mode screen description

Screen Description

Display

Content

*a: Device Name List No. 1

  • Device Name List No. 1 displays some of the devices that make up the audio and visual system.
  • The names of the components from Device Name List No. 1 are shown in the following table.

*b: Check Result

Result codes for all devices are displayed.

*c: Memory Clear

  • Present and history DTCs and registered connected device names are cleared.
  • Press the "Memory CLR" switch for 3 seconds.

*d: Recheck

  • A system check will be performed again after the memory is cleared.
  • The "Recheck" switch will dim during a system check.

*e: Device Name List No. 2

  • Device Name List No. 2 displays some of the devices that make up the audio and visual system.
  • The names of the components from Device Name List No. 2 are shown in the following table.
*a: Device Name List No. 1 Description

Name

Component

Connection Method

DA

Radio and display receiver assembly

-

EXT BOX*1

Stereo component tuner assembly

Communication line for LVDS

  • *1: w/ SDARS System
*b: Check Result Description

Result

Meaning

Action

OK

The device does not respond with a DTC.

-

DETAIL

The device responds with a DTC.

Look up the DTC in "Unit Check Mode".

NCON

The device was previously present, but does not respond in diagnostic mode.

- Check power supply wire harness of the device.

- Check the AVC-LAN of the device.

NRES

The device responds in diagnostic mode, but gives no DTC information.

- Check power supply wire harness of the device.

- Check the AVC-LAN of the device.

*e: Device Name List No. 2 Description

Name

Component

Connection Method

AUX/VTR

No. 1 stereo jack adapter assembly

Vehicle wire harness

(b) Unit check mode screen description

Screen Description

Display

Content

*a: Device name

Target device

*b: History DTC

Diagnostic memory results and stored DTCs are displayed.

*c: Current DTC

DTCs output in the service check are displayed.

*d: DTC

DTC (Diagnostic Trouble Code)

*e: Diagnosis clear switch

Pushing this switch for 3 seconds clears the diagnostic memory data of the target device (Both response to diagnostic system check result and the displayed data are cleared.).

HINT:

  • This screen is updated once per second.
  • A maximum of 6 DTCs can be displayed for history and present DTCs.

(c) Read the system check result.

(1) If the check result is "DETAIL", touch the displayed check result to view

(1) If the check result is "DETAIL", touch the displayed check result to view the results on the "Unit Check Mode" screen and record them.

NOTICE:

A maximum of 6 DTCs can be displayed for history and present DTCs on the "Unit check mode" screen. Therefore, when 6 DTCs are displayed, troubleshoot those DTCs first and then check the "Unit check mode" screen again to see if any other DTCs are displayed.

HINT:

  • When all results are "OK", this means that no DTCs are present.
  • When proceeding to view the results of another device, press the "Back" switch to return to the "System Check Mode" screen. Repeat the step above to view the results of other devices.

(2) Check the details of the DTC(s) (See page ). 7. DTC CLEAR/RECHECK (CLEAR USING SYSTEM CHECK MODE SCREEN) ).

7. DTC CLEAR/RECHECK (CLEAR USING SYSTEM CHECK MODE SCREEN)

(a) Clear DTCs

(1) Press the "Memory CLR" switch for 3 seconds.

(1) Press the "Memory CLR" switch for 3 seconds.

(2) Confirm that the check results are cleared.

HINT:

  • To clear the DTCs for a specific device, clear the DTCs using the "Unit Check Mode" screen.
  • When clearing the DTCs using the "Unit Check Mode" screen, press the "Code CLR" switch for 3 seconds.

(b) Recheck

(1) Press the "Recheck" switch.

(1) Press the "Recheck" switch.

(2) Confirm that all diagnostic codes are "OK" when the check results are displayed. If a code other than "OK" is displayed, troubleshoot again.

HINT:

HINT:

When DTCs are cleared using the "Unit Check Mode" screen, press the "Back" switch to return to the "System Check Mode" screen and perform this operation.

8. FINISH DIAGNOSTIC MODE

(a) Turn the ignition switch off.

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