Unit Check (Quick Check)

Some of the tests and screens that are displayed under the Unit Check are different from the more detailed checks listed under other menu options.

To start the test, select the item you want to check.

• ECU Info
• Display
• XM
• HFL
• Rear Camera
• B-CAN
• GPS
• Remote Tuner
• TCU
• CD/DVD Mech
• F-CAN
• Mic/STRG
• AMP
• USB
• Car Status
• Error History
• HDD
• Yaw Sensor
• Hard Key
• Speaker Check

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ECU Info 

This diagnosis checks for problems in the navigation ECU. When you start this diagnosis, the audio-navigation unit may freeze or delay up to a minute while the diagnosis runs.

• D-RAM: Displays the result of the access to the D-RAM (OK/NG).
• • To check the D-RAM, select D-RAM Check, then select Yes on the confirmation screen. While checking, do not turn the vehicle to the ACCESSORY mode or the OFF (LOCK) mode. The system resets automatically.
  • Recheck the ECU Info diagnosis. If D-RAM shows NG, replace the audio-navigation unit .
• Program (Flash, HDD, DVD): Displays the version of the each software.
• Serial No.: Displays the audio-navigation unit serial number. That should be the same as the serial number found on the upper side of the audio-navigation unit.
• DB Version: Displays the version of the database in the HDD.
• HDD Version: Displays the version of the HDD.
• Flash: Displays the result of the access to the flash memory (OK/NG). If NG, replace the audio-navigation unit .
• Model: For this model, the field should begin with TZ5A.
• Coverage: Displays the destination of the audio-navigation unit.

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Display 

This diagnosis does additional checks on the GA-Net bus between the audio-navigation unit and the center display unit. This test also checks the internal electronic functions.

• If Connection shows NG, Check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .
• The version represents the software version in the display.
• If ROM or RAM shows NG, replace the center display unit .

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XM 

This diagnosis checks the GA-Net bus between the audio-navigation unit and the XM receiver.

If Connection shows NG, the connection may be open or short between the XM receiver and the audio-navigation unit or to another unit on the same communication bus. Check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017)

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HFL 

This diagnosis checks first whether the telematics control unit or the HandsFreeLink control unit is connecting to the audio-navigation unit via the GA-Net bus. With AcuraLink, HandsFreeLink control unit is built into the telematics control unit.

• If HFL shows B1792, go to the HFL DTC B1792 troubleshooting - Refer to: DTC Troubleshooting: B1792(Without AcuraLink), or DTC Troubleshooting: B1792(With AcuraLink) .
• If HFL and GA-NET shows NG, go to: HandsFreeLink System Symptom Troubleshooting - HFL does not respond .
• If USB shows NG:
• • Without AcuraLink, go to : HandsFreeLink System Symptom Troubleshooting - Phone book, TXT/E-mail does not work .
  • With AcuraLink, check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .
• S/W Version: Displays the telematics control unit or the HandsFreeLink control unit software version.
• Part Number: Displays the telematics control unit or the HandsFreeLink control unit parts number.

Check any official Honda service website to see if there are any updates available for the telematics unit or the HandsFreeLink control unit. If there are software updates available, do the Telematics Control Unit Update or the HandsFreeLink Control Unit Update .

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Rear Camera 

This diagnosis checks the rearview camera connection.

• If Connection shows NG, check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .
• If Connection shows OK, press the AUDIO button to display the rearview camera image. To return to the previous screen, press the AUDIO button again.

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B-CAN 

NOTE:  The vehicle needs to be in the ON position

This diagnosis checks whether the audio-navigation unit is receiving B-CAN data properly.

B-CAN (Body Controller Area Network) passes information between processors on the network. The B-CAN network uses a communication protocol that transmits data at 125 kbps.

• This diagnosis must have the engine running.
• If ERROR STATUS shows NO ERROR, an error is not detected between B-CAN bus and the audio-navigation unit.
• If any error is detected, check for B-CAN DTCs with the HDS. The data displayed in the ID boxes is for factory use only.

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GPS 

This diagnosis checks the GPS antenna connection and the GPS receiver condition.

• If Antenna shows NG, check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .
• If Receiver in Navi ECU shows NG, replace the audio-navigation unit .
• Select Information to see the GPS satellite details.

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Remote Tuner 

This diagnosis shows the external radio tuner (AM/FM) status. Make sure the audio-navigation unit radio tuner is turned on.

• Current Frequency can be changed by selecting TUNE.
• Source can be changed in this order: AM→FM by selecting Change.
• Electric Field Intensity: Displays radio reception sensitivity (dBuV).
• ANT +B: Changes the AM/FM antenna power status ON or OFF.
• RDS BER: Displays the number of RDS error that is receiving.
• F-Check: Changes the station list automatic updating operation status ON or OFF.
• Antenna: Selects the radio antenna function from Auto, Main, Sub, or PD (diversity).
• Version: Displays the tuner unit software version.
• Serial No.: Displays the tuner unit serial number.
• Part No.: Displays the tuner unit parts number.
• Database Clear: The Station list in the tuner unit can be cleared by selecting Clear.
• HD Function: Changes the HD Radio (TM) function status YES or NO.

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TCU (With AcuraLink) 

This diagnosis shows the telematics control unit information via the USB between the audio-navigation unit and the telematics control unit.

• Drawing Number: Displays the telematics control unit drawing number.
• Serial Number: Displays the telematics control unit serial number. That should be the same as the serial number found on the upper side of the telematics control unit.
• S/W Version: Displays the telematics control unit software version.
• VIN: Displays the VIN number that received from the B-CAN.
• IMSI: Displays the International Mobile Subscriber Identity (MAX 15 digits)
• Phone Module: Displays the phone module status (Active or Deactive)
• PRL Version: Displays the Preferred Roaming List version

These diagnosis checks the telematics control unit status.

• DTCs: Checks the telematics system DTCs. Go to AcuraLink General Troubleshooting Information .
• TEL Info: Displays the phone module information.
• Log: Displays the event log data (Type, Data, Time, Code) of the telematics control unit.
• Test: Checks the SMS function. Go to AcuraLink Self-Diagnostic Function .
• Reflash: Do not use this selection on this vehicle.

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TEL Info 

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TCU Log 

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CD/DVD Mech 

This diagnosis checks the audio-navigation unit internal CD/DVD player mechanism.

Version shows CD/DVD mech version. When the audio-navigation unit can read the version number, Connection shows OK. If the version number cannot be read, Connection shows NG.

• Inserting the CD/DVD mech update disc allows you to select Download. Otherwise it is grayed out.
• To update the CD/DVD mech, you must insert the update disc before selecting this screen. If you insert the update disc when you are on this diagnosis, the DownLoad stays grayed out. In this case, exit the CD/DVD Mech screen and start the diagnosis again.

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F-CAN 

NOTE:  The vehicle needs to be in the ON position

F-CAN (Fast Controller Area Network) passes information between processors on the network. For example, the F-CAN network passes trip computer information between the gauge and the audio-navigation unit for the trip computer function. The F-CAN network uses a communication protocol that transmits data at 500 kbps.

• This diagnosis must have the engine running.
• If ERROR STATUS shows NO ERROR, an error is not detected between F-CAN bus and the audio-navigation unit.
• If any error is detected, check for F-CAN DTCs with the HDS. The data displayed in the ID boxes is for factory use only.

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Mic/STRG SW 

This diagnosis checks whether the microphone is connecting to the telematics control unit or the HandsFreeLink control unit. If Mic and/or STRG SW shows HFL DTCs (B1775 and/or B1776), go to the indicated HFL DTC troubleshooting.

• Press the PICK-UP, HANG-UP/BACK, and TALK buttons. This should cause the each indicator on the screen to momentarily turn green. If it does not briefly turn green, go to : Audio System Symptom Troubleshooting - Audio remote-HFL switch does not work (ODMD(TM) (touch screen) and center switch buttons work .
• If you check the Mic Level, press the TALK button on the steering wheel, wait until Now Recording! is indicated, and in a normal voice say "testing". The Mic Level indicator on the screen should momentarily turn green. If there is no Mic Level movement when you speak, check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .

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AMP 

This diagnosis checks the stereo amplifier connection.

If Connection shows NG, go to: Audio System Symptom Troubleshooting - No sound is heard from all the speakers (display is normal) .

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USB Memory Information 

NOTE:  Not all USB drives are compatible. See the owner's manual for more information.

This diagnosis displays the USB memory status that is connected to the audio-navigation unit.

• If the USB memory is connected to the USB port, the screen displays the connection status (Inserted/Not Inserted), the USB memory size, and the Product ID, Vender ID.
• If Connection shows NG, check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .

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Car Status 

Use this screen to confirm that the audio-navigation unit is properly receiving input signals. Signals equal to (0) are OFF, and signals equal to (1) are ON. If the value on the display does not match the actual vehicle status, then check the wire carrying the signal.

• VSP-Vehicle Speed Pulse from the PCM (audio-navigation unit connector F (18P) terminal No. 10)

  The VSP comes from the PCM as a dedicated signal. Internally, the audio-navigation unit compares the actual VP on the map against street data to adjust the pulse to speed scaling factor.

• • a.

    OFF (0) when vehicle is not moving

  • b.

    ON (1) when vehicle is moving

• ILL CANCEL

  The illumination cancel indication comes from the gauge control module to the audio unit via the B-CAN bus.

  This item detects whether the illumination cancel function is in use.

• • a.

    OFF (0) when the dashlights brightness control knob is less than 90 % brightness with the headlights turned on

  • b.

    ON (1) when the dashlights brightness control knob is more than 90 % brightness with the headlights turned on

• ILL-Illumination indication

  The illumination indication comes from the gauge control module to the audio-navigation unit via the B-CAN bus. The navigation uses the signal to determine whether to put the navigation screen into the Day or Night brightness mode.

• • a.

    OFF (0) when parking lights, or headlights are off

  • b.

    ON (1) when parking lights, or headlights are on

• REAR DEF-Rear window defogger indication comes from the gauge control module to the audio-navigation unit via the B-CAN bus.
• • a.

    OFF (0) when rear window defogger is not working

  • b.

    ON (1) when rear window defogger is working

• ILL DUTY

  The illumination dimming duty indication comes from the gauge control module to the audio-navigation unit via the B-CAN bus.

  With the headlights on, use the dashlights brightness control knob to dim and brighten the gauge. You should see the value change from 1 (max low) to 22 (max high).

• IGNITION-Ignition switch position indication

  Detects if the engine is running is running using information provided over the F-CAN bus.

• • a.

    OFF (0) when the vehicle is in ACCESSORY mode

  • b.

    ON (1) when the vehicle is in ON mode

• FOB (Keyless Remote)

  0 to 2 (display notification ID)

• BACK-Reverse indication from reverse relay (audio-navigation unit connector G (24P) terminal No. 24)

  The BACK signal is used by the audio-navigation unit to allow the map screen to show the VP moving backwards when the vehicle is in reverse. This signal is needed because the VSP has no direction indication.

• • a.

    OFF (0) when the shift lever is in any position other than reverse

  • b.

    ON (1) when the shift lever is in reverse

• RECEIVED VIN NO

  This item indicates the VIN that received from the PCM.

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Error History 

If you select Hard Error or Soft Error, you can see the error information. Refer to How to Check for Error History to use this diagnosis. - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017)

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HDD 

This diagnosis checks the HDD mount error and the HDD temperature, and displays a list of total and free capacities of each partition.

If HDD Status shows NG, check for hard error codes - Refer to: How to Troubleshoot the Navigation System (2014 2015 2016 2017) .

NOTE:  If HDD Status shows NG, the screen may not show the free and total capacities of each partition and the temperature.

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Yaw Sensor 

This diagnosis checks the gyro functionality based on the two voltages Sensor and Offset. For more information, see the Yaw Rate diagnosis.

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Hard Key 

This diagnosis tests the interface dial, the center switch panel buttons that surround it, and the audio remote/HFL-navigation voice control switch. For this model, the audio remote/HFL-navigation voice control switch buttons use the data battery sensor line and the bus via the gauge control module for communications.

To complete the each test, control the audio remote/HFL-navigation voice control switch, press the center switch panel buttons, and move the interface dial to each indicated position. As each function is tested, the corresponding button on the display should highlight. To exit, press in and hold the interface dial knob.

• Steering Key: Checks the audio remote/HFL-navigation voice control switch buttons and the selector wheel.
• Hard Key: Checks the center switch panel buttons and the interface dial.

NOTE:  You cannot use the onscreen return button to exit this function.

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Select Steering Key 

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Select Hard Key 

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Speaker Check 

NOTE:  Make sure the audio system is off before this diagnosis.

This diagnosis checks the audio speakers individually.

Selects NEXT or BACK to select Speaker. A tone should sound from the speaker.

When you select NEXT, the system checks the speakers in this order:	(1)→(2)→(3)→(4)→(5)
When you select BACK, the system checks the speakers in this order:	(1)→(5)→(4)→(3)→(2)

	Display Message	Vehicle Test Condition
(1)	FL	You should hear a tone from the driver's door speaker
(2)	FR	You should hear a tone from the front passenger's door speaker
(3)	RR	You should hear a tone from the right rear speaker
(4)	RL	You should hear a tone from the left rear speaker
(5)	ALL	You should hear a tone from the all speakers

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