Handsfreelink System Acura ZDX I

Scheme 527

Scheme 528

How to Check for DTCs with the HDS

Note. Check the vehicle battery condition first (see BATTERY TEST ).

Scheme 529

1. Make sure the ignition switch is in LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
4. Make sure the HDS communicates with the vehicle and the HandsFreeLink control unit. If it does not, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/communication-devices/#communication-systems-f-can-k-line__dlc-circuit-troubleshooting) ).
5. Select HandsFreeLink in the BODY ELECTRICAL menu.
6. Select DTCs in the HandsFreeLink menu.
7. Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the indicated «DTC TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) . If no DTCs are indicated, refer to symptom troubleshooting. NOTE: After troubleshooting, clear the DTCs with the HDS. For specific operations, refer to the HDS user's manual.

Disconnecting

To disconnect the connector, pull the lever (A) while pushing the lock tab (B) down, then pull the connector (C).

Scheme 530

Connecting

To connect the connector, push the connector into the connector sleeve (A). As the connector is pressed in, the lever (B) moves to the locked position.

Scheme 531

Introduction

The HFL system works only with Acura approved Bluetooth'-enabled cell phones with a hands-free profile. If you are not sure if your cell phone is compatible with the HFL system, Acura has a dedicated call center at 888-528-7876 and web site www.acura.com/handsfreelink, to answer your questions. You can also contact the call center for information about cell phone software versions and settings.

The HFL system allows you to make and receive hands-free calls. It cannot control the cell phone's performance (call quality and signal strength). For more information about performance and performance problems, refer to Dropped Calls.

Always call the HFL call center first, not Tech Line because the HFL call center has the latest information about cell phone software versions, settings and other issues.

Most HFL complaints are due to pairing, configuration, or compatibility issues. Contact the Acura call center before replacing the HandsFreeLink control unit.

The call center is open Monday thru Friday from 6:00 a.m. to 6:00 p.m. CST; Saturday from 7:00 a.m. to 6:00 p.m. CST; and Sunday from 8:00 a.m. to 6:00 p.m. CST.

Checking Cell Phone Compatibility

The most important step in troubleshooting HFL issues is to identify the client's cell phone model, the software version, and the cellular carrier that experiences the HFL problem. Not all cell phones with the Bluetooth feature and a hands-free profile are compatible with the Acura HFL system.

Go to www.acura.com/handsfreelink or call the Acura's dedicated call center at 888-528-7876, and check if the client's cell phone is approved to work with the Acura HFL system.

Note. These approved and currently testing cell phone model lists are constantly changing, so make sure you view them frequently. Cell phones are added as they are approved. Cell phones can be removed from the approved list if a software bug is discovered that makes the cell phone incompatible. There cell phones can be added back to the approved list if the phone manufacturer corrects the bug. If the software bug is corrected, a new software version is created and may be listed in the Supported Features section of the cell phone. If you have trouble finding the cell phone's software version, you can call the HFL call center at 888-528-7876. The Acura web site now includes the software versions that are tested and approved. When software versions are listed, you need to know which version is loaded on the cell phone to help you troubleshoot the client's complaint. If you cannot access the Acura web site, call the Acura's dedicated call center at 888-528-7876 for further assistance.

Voice Control Tips and Improving Voice Recognition

To give a voice command to the HFL system, press and release the TALK button (A) or the HFL TALK button (B). Always wait for the beep, then give your command in a clear, natural voice. The HFL microphone is on the ceiling by the map lights.

If the HFL system does not recognize your voice command, you'll hear "Pardon? Press the TALK button or the HFL TALK button and say a command. For a list of commands, say HandsFreeHelp." If your command is not recognized a second time, you'll hear "Bluetooth HandsFreeLink main menu. Available calling options are call, dial, redial, and transfer. Available setup options are phone setup, phone book, and system setup. For more detailed help, say HandsFreeHelp." If your command isn't recognized a third time, the HFL system sends you to its Help menu.

To hear a list of available options at any time, press the TALK button or the HFL TALK button, and say "help."

The HFL system may have problems recognizing some voices. To improve voice recognition

1. Close the windows and moonroof.
2. Set the fan speed to low (1 or 2) or off.
3. Adjust the airflow from the center vents down, so that it's not blowing against the microphone on the ceiling.
4. Speak in a clear and natural voice. If the system cannot recognize your command, try speaking louder, slower, or in a deeper tone.
5. If the background noise is too loud, you may need to speak louder.
6. If you speak with something in your mouth, or your voice is too high, the system may not interpret your command correctly.
7. Find out if the problem is with one person or with everyone who uses the system. If the system has a problem with only one person's voice, this is a system limitation.
8. Make sure you are sitting in the driver's seat when setting up the HFL system, initiating calls, or giving voice commands.
9. When speaking numbers, makes sure to speak clearly. If the system still has issues, try speaking slower.

Many issues result from the client not using the system properly. When the TALK button or the HFL TALK button is pressed, the client hears one audible tone. When the BACK button (C) or the HFL BACK button (D) is pressed, the client hears two audible tones. Make sure to press the BACK button or the HFL BACK button to exit out of the HFL main menu after completing a call and before giving any navigation commands.

The HFL system may experience a number recognition issue, such as when a client rattles off a set of numbers in a group unrecognized by the system. The HFL system understands phone numbers in specific blocks of 3, 4, 7, 10, and 11 numbers. For example, the system understands

1234567890

123-456-7890

The system may become confused if numbers are stated in other blocks like these

1234-567-890

12-34-56-78-90

12345-67890

123-4567-890

1-2-3-4-5-6-7-8-9-0

If the system does not understand your voice commands, see Voice Control Tips and Improving Voice Recognition.

Scheme 532

Scheme 533

Navigation Through HFL Menus

To skip a voice prompt, press and release the TALK button (A) or the HFL TALK button (B) while the HFL system is speaking. The system beings listening for your next voice command.

To go back a step in a voice command sequence, press and release the BACK button (C) or the HFL BACK button (D), or press the TALK button or the HFL TALK button and say "Go back." If you don't say anything while the HFL system is listening for your voice command, it times out and stops voice recognition. The next time you press and release the TALK button or the HFL TALK button, the HFL system begins listening from the point it timed out.

If you've finished or want to stop a voice command sequence at any time, press and release the BACK button or the HFL BACK button, or press and release the TALK button or the HFL TALK button, wait for the beep, and say "Cancel." The next time you press and release the PICK-UP button or the HFL TALK button, the HFL system begins from its main menu. To avoid keeping the audio system muted, press and release the BACK button or the HFL BACK button when you are finished.

Scheme 534

Scheme 535

Pairing a Cell Phone

You must pair an approved Bluetooth-compatible cell phone to the HFL system before you can make and receive calls. For a current list of approved cell phones and specific cell phone pairing instructions for each cell phone, see Checking Cell Phone Compatibility, go to www.acura.com/handsfreelink, or call the Acura's dedicated call center at 888-528-7876.

The following procedure works for most Acura approved cell phones. If you cannot pair your cell phone to the HFL system with this procedure, refer to your cell phone's operating manual, the vehicle's Owner's Manual, visit www.acura.com/handsfreelink, or call the Acura's dedicated call center at 888-528-7876.

Note. You cannot pair a cell phone while the vehicle is moving. Your cell phone must be in its Discovery mode. A maximum of six approved Bluetooth-compatible cell phones can be paired to the system.

With Navigation

The commands for pairing the cell phone can either be selected using the interface dial or by using the voice recognition system (TALK and BACK buttons).

Note. The navigation system can pair up to six approved cell phones. If you try to pair a seventh cell phone, a message appears that prompts you to delete one of your existing cell phones.

1. Turn the ignition switch to ACCESSORY (I), or press the engine start/stop button to select the ACC mode and make sure the cell phone you are pairing is on and in its discovery mode.
2. Press the INFO/PHONE button, and turn the interface dial to select Cellular Phone, then press ENTER.
3. Move the interface dial down to select Phone Setup.
4. Select Setup Bluetooth cell phone, and press Enter.
5. Select Pair Phone, then press enter.
6. When a four-digit pass key number appears on the screen, wait until prompted by the cell phone, then enter the pass key into your cell phone.
7. Once the cell phone is successfully paired, the screen displays "The pairing was successful."

Without Navigation

1. With your approved cell phone on and the ignition switch in ACCESSORY (I) or ON (II), or press the engine start/stop button to select the ACC or ON mode, press and release the HFL TALK button. After the beep, say "Phone setup." The HFL responds, "Phone setup options are pair, edit, delete, list, status, next phone, set pairing code."
2. Press and release the HFL TALK button. After the beep, say "Pair." The HFL responds, "The pairing process requires operation of your mobile phone. For safety, only perform this function while the vehicle is stopped. For proper system function a compatible Bluetooth cell phone is required. Please visit www.acura.com/handsfreelink for a list of approved phones and other system information. HandsFreeLink is waiting to pair with a Bluetooth cell phone. From your phone, search for Bluetooth devices, and select HandsFreeLink. When prompted by your mobile phone enter the pairing code XXXX." The HFL system will give you a 4-digit pairing code.
3. When prompted by your cell phone, enter the pairing code. Refer to your cell phone user guide for more information about searching for a Bluetooth device.
4. Once the cell phone is recognized by the HFL system, it responds, "HandsFreeLink has connected to a new phone. A name is needed to identify this phone. Press the talk button and say a name. For example, John's phone."
5. Press and release the HFL TALK button. After the beep, say the name you want to use. For example, say "Tom's phone." The HFL responds, "Tom's phone has been successfully paired."

Pairing Troubleshooting

Many pairing issues are resolved by altering the client's phone settings. Call the Acura's dedicated call center at 888-528-7876 after you have duplicated the problem.

If you cannot get an approved HFL phone to pair, call the Acura's dedicated call center at 888-528-7876, or go online to www.acura.com/handsfreelink.

Bluetooth feature settings must be turned on. Phone manufacturers set the default to disable Bluetooth features to conserve battery life. Cell phones may provide procedures to "Temporary Power On Bluetooth", or "Power On Bluetooth." Turn the Bluetooth feature on, pair the phone to the vehicle, and confirm the phone is linked. Do this by turning the phone off and back on. Make or receive a call to confirm the cell phone is successfully paired.

When the phone's Bluetooth feature is on, other handsfree accessories such as earpieces or headsets may automatically reconnect to the phone when you turn on the accessory or move it within range of the cell phone.

This results in the cell phone not connecting to the HFL system when the client enters the vehicle. You must unlink the hands-free accessory from the cell phone before the HFL system can reconnect.

Some cell phones have an Auto Answer setting that functions with a headset. This setting must be turned off or the HFL system cannot accept any incoming calls. When this setting is on, it blocks the HFL system from answering the call, and the call goes to voice mail. This can cause the client to think that the cell phone is not paired properly.

The HFL system can pair a maximum of six cell phones. Some vehicles will tell you that the HFL system has reached its maximum while other vehicles will not. To check how many phones are paired, press and release the TALK button or the HFL TALK button. After the beep, say "Phone setup list." The HFL system lists every assigned cell phone name paired with it, then finishes by saying "The entire list has been read. Returning to the main menu." Count number of cell phones listed. If there are six, you must delete one cell phone before adding a new one.

Pairing Checks

For more information about pairing, refer to the cell phone operating manual, or go to www.acura.com/handsfreelink.

1. Is the cell phone compatible with the HFL?
2. Is the Bluetooth feature turned on?
3. Is the client using the HFL buttons, not the navigation buttons (if applicable), when pairing?
4. Is the cell phone battery fully charged, and is there good signal strength when pairing?
5. Do a soft reset on the cell phone.
6. If the client is trying to pair a Blackberry® or Palm Treo™ device, make sure the client uses the shift key when entering the pass code. If the shift key is not pressed, the client may be entering letters. The HFL does not recognize letters.

Dropped Calls

Clients may perceive dropped calls as being an HFL system fault, but most dropped calls are resultant from cell phone and cell phone carrier issues. The HFL system does not directly handle the cell phone signal. It allows the cell phones to transmit the cell phone audio over the vehicle's audio system.

Many dropped calls issues can be resolved by changing the client's phone settings. For help on approved HFL settings, call the Acura's dedicated call center at 888-528-7876, or go online to www.acura.com/handsfreelink.

Always confirm with the client if the number of dropped calls is higher while using the HFL system as opposed to using the cell phone only. Clients often confuse problems with their phone or carrier as a problem with the HFL system. The HFL system cannot control or determine

1. Cellular connection quality
2. Signal strength
3. Cellular coverage
4. Ambient weather conditions that affect cellular signals

When a client complains about dropped calls, ask questions about when or where the calls are dropped, such as

1. Do you drive the same route on a regular basis?
2. Does the call drop in the same location?
3. Where do you keep your cell phone?
4. Have you compared the number of dropped calls using the HFL versus making calls from the handset?
5. Does your cell phone have an antenna that needs to be extended?

Many reasons for a dropped call are not related to the HFL system. Here are some causes for dropped calls

1. If the quantity of dropped calls is about the same when the client uses the HFL system versus the handset, the issue is likely due to the cell phone or the carrier.
2. If the cell phone is equipped with a retractable antenna, it needs to be extended to maximize signal strength.
3. If a client also notices that the calls tend to drop in the same areas, the HFL system may be operating normally, but something about the area diminishes cellular coverage to a point where the call drops.
4. Hills or mountains can block or interfere with cellular signals.
5. High-rise buildings, bridges, or other large structures may block or interfere with cellular signals.
6. Placing the cell phone in a purse, in a metal briefcase, under the seat, in the glove box, or in the trunk can all affect signal reception.
7. There are coverage gaps in the cellular service. When driving, a call is typically passed from one tower to another. If the client drives through an area where there is a coverage gap between towers, the call drops.
8. Electrical storms, heavy rain, or overcast conditions interfere with signal strength.
9. The cell phone battery's state of change can affect signal reception. A low battery may reduce the cell phone's ability to boost the antenna's power and function properly, especially in low signal strength areas. Some cell phone manufacturers trade off signal transmission and reception strength for battery life. As the battery weakens, the signal strength may also weaken. Some cell phones may operate more effectively than others in low signal strength areas, especially with a partially charged battery, and depending on whether or not the retractable antenna is fully extended (if applicable). On these models, make sure the antenna is always extended to maximize signal strength and extend battery life.

Phone will not Automatically Connect the HFL

Call the Acura's dedicated call center at 888-528-7876 after you have duplicated the problem.

If a client complains that their cell phone is not automatically connecting to the HFL system when they enter the vehicle, do this

1. Make sure the Bluetooth feature is turned on in the cell phone.
2. Make sure the cell phone is properly paired to the HFL system.
3. Do a soft reset to the cell phone.
4. Check if the cell phone has an Authorized Connection or Trusted option.
5. Check the battery and signal strength on the cell phone. Pairing a phone requires optimal signal strength and a nearly full battery.

Incoming Calls

Call the Acura's dedicated call center at 888-528-7876 after you have duplicated the problem.

If a client complains that they cannot receive incoming calls through the HFL system, see if the call is routing to the cell phone instead of the HFL system. An easy way to know if the call is routed to the cell phone is when the client says, "I can't hear the caller, but they can hear me."

Scheme 536

Scheme 537

1. Make sure the Bluetooth feature is turned on in the cell phone.
2. Make sure the cell phone is paired to the HFL system and linked.
3. Make sure the answer settings in the cell phone are set to multi-key or any-key answer. If the cell phone is set to flip-open to answer, recommend changing the setting to Any Key or leaving the cell phone flipped open when using the HFL system.
4. Make sure the Audio Answer feature is turned off in the cell phone.
5. Do a soft reset to the cell phone.
6. Make sure the battery is fully charged and there is adequate signal strength.
7. Ask the client if they have set specific ring tones or ringer IDs to specific contacts. If they have, recommend returning them to a standard ring tone for all calls.
8. Make sure the client is pressing the PICK-UP button (A) or the HFL TALK button (B) and not the HANG-UP button (C), the HFL BACK button (D), the TALK button (E), or the BACK button (F).

Outgoing Calls

Call the Acura's dedicated call center at 888-528-7876 after you have duplicated the problem.

If a client says that they cannot place a call using the HFL system, ask if the call was initiated through the HFL system or the cell phone itself.

If the call is placed by the HFL system

Scheme 538

Scheme 539

1. Make sure the Bluetooth feature is turned on in the cell phone.
2. Make sure the cell phone is paired to the HFL system and linked.
3. Make sure the client is pressing the TALK button (A) or the HFL TALK button (B) before each command and going through the calling process correctly.
4. Make sure the client is pressing the PICK-UP button (C) or the HFL TALK button and not the HANG-UP button (D), the HFL BACK button (E), the TALK button, or the BACK button (F).
5. Check if the cell phone has an Authorized Connections or Trusted option.
6. Do a soft reset to the cell phone. If the call is placed by the cell phone: With navigation; The call will remain on the handset until you transfer it over to the HFL system. To continue the call on the HFL system, you must use the Transfer command by selecting "Transfer." The client can now continue the call using the HFL system. Without navigation; By default calls made from the handset will transfer to the HFL system. If Auto-transfer is turned "off" calls will remain on handset. To continue or the HFL system, press the HFL TALK button and say "Transfer."

The commands for deleting a cell phone can either be selected using the interface dial or by using the voice recognition system (use the TALK and the BACK buttons).

Note. The entire HFL system cannot be deleted at once. You must delete one cell phone at a time.

1. Turn the ignition switch to ACCESSORY (I), or press the engine start/stop button to select the ACC mode.
2. Press the INFO/PHONE button, and turn the interface dial to select Cellular Phone, then press ENTER.
3. Move the interface dial down to select Phone Setup.
4. Select Edit User, and press ENTER.
5. Select Delete, then select the cell phone you want to delete from the list. Press ENTER to select the cell phone, then press ENTER again to confirm.
6. Repeat steps 4 - 5 for each cell phone you want to delete.

Note. This operation clears the HFL system of all passcode(s), any paired cell phones, and all names in the HFL phonebook. Clearing the HFL system is recommend before selling the vehicle. If the system is locked and the pass code is lost or forgotten, see the symptom troubleshooting.

1. Press and release the HFL TALK button. After the beep, say "System setup clear" and the HFL system responds, "This process will clear all paired phones, clear all entries in the phonebook, clear the security passcode and restore all defaults in the system setup. Is this what you would like to do?."
2. Press and release the HFL TALK button. After the beep, say "Yes" and the HFL system responds, "Preparing to clear the system, which may take up to 2 minutes to complete."
3. Press and release the HFL TALK button. After the beep, say "Continue" to proceed, or say "Go back" or "Cancel."
4. If you said "Continue" the HFL responds, "Please wait until the system is cleared". After a short period of time (up to two minutes) the HFL responds, "The system has been cleared."

Self-Diagnostic Function

Note. This procedure should be used only if HDS is unavailable.

To run the self-diagnostic function, do the following

Scheme 540

Scheme 541

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Press and hold the HANG-UP button (A) or the HFL BACK button (B) for more than 5 seconds.
3. When the HandsFreeLink system enters the self-diagnostic function, the following will occur. If the system has not completed testing for DTCs, the HandsFreeLink system says "The hands free system test is in progress." If there is no DTC, the HandsFreeLink system says "The hands free system is OK." If there is any DTC, the HandsFreeLink system says "The hands free system needs to be serviced." NOTE: The self-diagnostic function can only be initiated while the HFL is in its idle state. The self-diagnostic function starts after you press and hold the HANG-UP button or the HFL BACK button for 5 seconds, and ends if the HandsFreeLink control unit returns to its idle state.

Auto Answer

This cell phone setting forces incoming calls to automatically be answered by the handset. Disable this feature on the cell phone when using the HFL system, as it may interfere with the HFL system answering incoming calls. Set the cell phone setting to

1. Send Only
2. Any Key
3. Multi-Key answer

Answer Options

These cell phone settings allow you to select how you would like to answer an incoming call on the handset. The answer option in the cell phone can affect inbound calls on the HFL system.

Authorized Connection

This cell phone setting allows the cell phone to connect automatically with the HFL system without prompting the client for permission to connect. In some instances, it can affect the ability of the cell phone to properly route sound to the HFL system.

Bluetooth Power

This cell phone function enables or disables the Bluetooth application. When using a hands-free device such as HFL, the Bluetooth application needs to be enabled.

Discovery Mode

You need to have the cell phone in Discovery Mode to allow other devices with Bluetooth capabilities (such as the HFL system) to find the cell phone during the pairing process.

Scheme 542

Scheme 543

1. TALK button (A) or the HFL TALK button (B): This button activates the voice control system and is used for all voice commends. Press and release it, wait for a beep, and give a voice command.
2. BACK button (C) or the HFL BACK button (D): This button has the same function as the CANCEL button. When you press and release it, the current voice command is canceled and the display returns to the previous screen.
3. PICK-UP button (E) or the HFL TALK button: This button is used to answer incoming calls or to make outgoing calls. You can also go directly to the Cellular Phone screen by pressing this button.
4. HANG-UP button (F) or the HFL BACK button: This button is used to end a call.

Hard Reset (cellular phone)

Hard resets clear the saved settings in the cell phone and restores it to the factory defaults. A hard reset should be done only as a last resort (see the cell phone owner's manual for more information).

Linking

This is when your paired cell phone is actively ready to use the HFL system. You can pair up to six cell phones to the HFL system, but only one cell phone can be linked at a time. If two paired cell phones are in the vehicle, only the cell phone that is linked can use the HFL system and functions. The second cell phone must be used as a normal handset.

Pairing

A description for linking two Bluetooth devices together. In this case, you are linking a cell phone with the HFL system. After the pairing process is complete, the devices are able to recognize each other and communicate wirelessly via Bluetooth.

Soft Reset (cellular phone)

This helps to restore the basic functions of the cell phone. To do a soft reset, turn the cell phone power off, remove and reinsert the cell phone battery, then turn the cell phone back on. See the cell phone user manual for more information.

Software Version

This refers to the software version loaded in the cell phone. The software version that was tested and determined to be compatible with the HFL system may be listed on the HFL website. Not all software versions are compatible with the HFL system.

DTC Troubleshooting Index

HANDSFREELINK CONTROL UNIT

Symptom Troubleshooting Index

Note. Most HFL problems with pairing and HFL function are usually caused by the cell phone and its configuration. Call the HFL call center at 888-528-7876 for help before replacing any HFL components.

Scheme 544

Scheme 545

HANDSFREELINK CONTROL UNIT 28P CONNECTOR (WITH NAVIGATION)

Scheme 546

HANDSFREELINK CONTROL UNIT 28P CONNECTOR (WITHOUT NAVIGATION)

Scheme 547

Scheme 548

Scheme 549

Scheme 550

Scheme 551

Scheme 552

Scheme 553

HFL System Troubleshooting

Note. Before doing this troubleshooting, refer to GENERAL TROUBLESHOOTING INFORMATION (see ) to make sure the cell phone is compatible and configured correctly. Make sure the cell phone is Acura approved and configured correctly. Online, go to www.acura.com/handsfreelink, or call the HFL call center at 888-528-7876. You must be able to duplicate the client's concern to successfully diagnose the problem. Always use the client's phone to successfully diagnose the problem.

1. Make sure the cell phone is approved by checking www.acura.com/handsfreelink, or call the HFL call center at 888-528-7876. Is the Bluetooth cell phone approved? YES -Go to step 2. NO -Explain to the client that the cell phone is not approved. Recommend they get a phone that does appear on the www.acura.com/handsfreelink.
2. Check if the cell phone has any special requirements (software version, configuration, etc.). Call the HFL call center at 888-528-7876 for help. Is the correct software version loaded and is the cell phone properly configured? YES -Go to step 3. NO -Explain to your client that the cell phone software needs to be updated or the cell phone needs to be configured properly. If the HFL call center is able to help you configure the cell phone, explain the proper settings, otherwise direct your client to contact their cell phone manufacturer or carrier.
3. Check the features of the approved phone at www.acura.com/handsfreelink, or call the HFL call center at 888-528-7876. Are all the features approved? YES -Go to step 4. NO -Check and see if the feature that is not approved is the same as the client complaint. If the complaint is about the feature that is not approved, the vehicle is OK. Explain to the client that the feature is not approved to work with the HFL. If the complaint is an approved feature, go to step 4.
4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
5. Press and hold the HANG-UP button or the HFL BACK button for more than 5 seconds. Do you hear the message "The hands free system is OK"? YES -Go to step 6. NO -Check for HFL DTCs with the HDS (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
6. Try to duplicate the problem or have the client demonstrate the problem. Can you duplicate the problem? Can uou duplicate the problem? YES -Go to step 7. NO -The system is OK at this time.
7. Pair the cell phone to a known-good vehicle (same model, year, and trim), and try duplicate the problem. Does the cell phone have the same problem on the known-good vehicle? YES -Call the HFL call center at 888-528-7876 to make sure the cell phone is configured correctly and has the correct software. If the cell phone is configured correctly, it is either a characteristic of the HFL system, or a characteristic of the particular approved phone being used. Explain to your client that this is a system characteristic. Another phone from the approved phone list may give more favorable results. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the problem goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

DTC B1775: Microphone Input/Output Shorted to Power or Open (with navigation)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 554

Scheme 555

Scheme 556

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or the ON mode.
4. Check for DTCs with the HDS. Is DTC B1775 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the front HFL-navigation-ANC/active sound control microphone 7P connector.
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between HandsFreeLink control unit 28P connector terminal No. 13 and body ground. Is there voltage? YES -There is a short to power in the wire between the HandsFreeLink control unit and the front HFL-navigation-ANC/active sound control microphone. Replace the affected shielded harness. NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 13 and No. 14 and front HFL-navigation-ANC/active sound control microphone 7P connector terminals No. 3 and No. 2 respectively. Is there continuity? YES -Go to step 12. NO -There is an open in the wire(s) between the HandsFreeLink control unit and the front HFL-navigation-ANC/active sound control microphone. Replace the affected shielded harness.
12. Disconnect audio-navigation unit connector H (28P).
13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
14. Measure the voltage between HandsFreeLink control unit 28P connector terminal No. 27 and body ground. Is there voltage? YES -There is a short to power in the wire between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness. NO -Go to step 15.
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Reconnect the HandsFreeLink control unit 28P connector and the front HFL-navigation-ANC/active sound control microphone 7P connector.
17. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
18. Do the HFL Self-Diagnostic Function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__self-diagnostic-function) ). Do you hear the message "The hands free system is OK"? YES -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ). NO -Substitute a known-good front HFL-navigation-ANC/active sound control microphone (see «FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__front-hfl-navigation-ancactive-sound-control-microphone-remo) ), and recheck. If the symptom/indication goes away, replace the original front HFL-navigation-ANC/active sound control microphone (see «FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__front-hfl-navigation-ancactive-sound-control-microphone-remo) ). If the symptom/indication is still present, replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

DTC B1775: Microphone Input/Output Shorted to Power or Open (without navigation)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 557

Scheme 558

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or the ON mode.
4. Check for DTCs with the HDS. Is DTC B1775 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the front HFL-ANC/active sound control microphone 7P connector.
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Measure the voltage between HandsFreeLink control unit 28P connector terminal No. 13 and body ground. Is there voltage? YES -There is a short to power in the wire between the HandsFreeLink control unit and the front HFL-ANC/active sound control microphone. Replace the affected shielded harness. NO -Go to step 10.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 13 and No. 14 and front HFL-ANC/active sound control microphone 7P connector terminals No. 3 and No. 2 respectively. Is there continuity? YES -Substitute a known-good front HFL-ANC/active sound control microphone (see «FRONT HFL-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ), and recheck. If the symptom/indication goes away, replace the original front HFL-ANC/active sound control microphone (see «FRONT HFL-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). If the symptom/indication is still present, replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -There is an open in the wire(s) between the HandsFreeLink control unit and the front HFL-ANC/active sound control microphone. Replace the affected shielded harness.

DTC B1776: Microphone Input/Output Shorted to Ground (with navigation)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 559

Scheme 560

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or the ON mode.
4. Check for DTCs with the HDS. Is DTC B1776 Indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the front HFL-navigation-ANC/active sound control microphone 7P connector.
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 13 and body ground, then between terminals No. 12 and No. 13. Is there continuity? YES -There is a short in the wires between the HandsFreeLink control unit and the front HFL-navigation-ANC/active sound control microphone. Replace the affected shielded harness. NO -Go to step 9.
9. Disconnect audio-navigation unit connector H (28P).
10. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 27 and body ground. Is there continuity? YES -There is a short to body ground in the wire between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness. NO -Go to step 11.
11. Reconnect the HandsFreeLink control unit 28P connector and the front HFL-navigation-ANC/active sound control microphone 7P connector.
12. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
13. Do the HFL Self-Diagnostic Function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__self-diagnostic-function) ). Do you hear the message "The hands free system is OK"? YES -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ). NO -Substitute a known-good front HFL-navigation-ANC/active sound control microphone (see «FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__front-hfl-navigation-ancactive-sound-control-microphone-remo) ), and recheck. If the symptom/indication goes away, replace the original front HFL-navigation-ANC/active sound control microphone (see «FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__front-hfl-navigation-ancactive-sound-control-microphone-remo) ). If the symptom/indication is still present, replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

DTC B1776: Microphone Input/Output Shorted to Ground (without navigation)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 561

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or the ON mode.
4. Check for DTCs with the HDS. Is DTC B1776 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Disconnect the front HFL-ANC/active sound control microphone 7P connector.
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 13 and body ground, then between terminals No. 12 and No. 13. Is there continuity? YES -There is a short in the wires between the HandsFreeLink control unit and the front HFL-ANC/active sound control microphone. Replace the affected shielded harness. NO -Substitute a known-good front HFL-ANC/active sound control microphone (see «FRONT HFL-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ), and recheck. If the symptom/indication goes away, replace the original front HFL-ANC/active sound control microphone (see «FRONT HFL-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). If the symptom/indication is still present, replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

DTC B1779: HandsFreeLink Steering Wheel Switch Failure

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 562

Scheme 563

Scheme 564

Scheme 565

Scheme 566

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then start the vehicle and turn the steering wheel back and forth several times.
4. Check for DTCs with the HDS. Is DTC B1779 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Do the HFL Switch Test (see «HFL SWITCH TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES -Go to step 7. NO -Replace the audio remote, HFL-navigation voice control switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Remove the audio remote, HFL-navigation voice control switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ) and disconnect the 12P connector, then connect the cable reel connector A (20P).
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
10. Measure the voltage between audio remote, HFL-navigation voice control switch 12P connector terminal No. 9 and body ground. Is there voltage? YES -Go to step 13 . NO -Go to step 11.
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 2 and audio remote, HFL-navigation voice control switch 12P connector terminal No. 9. Is there continuity? YES -Go to step 17 . NO -Repair an open in the wire between the switch, the cable reel, and the HandsFreeLink control unit.
13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
14. Disconnect cable reel connector A (20P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between HandsFreeLink control unit 28P connector terminal No. 2 and body ground. Is there voltage? YES -Repair a short to power in the wire between the HandsFreeLink control unit and the cable reel. NO -Replace the cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ).
17. Disconnect audio-navigation unit connector A (24P). NOTE: Eject all the disc(s) before disconnecting the audio-navigation unit to prevent damaging the CD/DVD player's load mechanism.
18. Check for continuity between audio remote, HFL-navigation Voice control switch 12P connector terminal No. 11 and audio-navigation unit connector A (24P) terminal No. 5. Is there continuity? YES -Replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Go to step 19.
19. Substitute a known-good cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ), and check for continuity between audio remote, HFL-navigation voice control switch 12P connector terminal No. 11 and audio-navigation unit connector A (24P) terminal No. 5. Is there continuity? YES -Replace the original cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ). NO -Repair an open in the wire between the audio remote, HFL voice control switch and the audio-navigation unit.

DTC B1779: HandsFreeLink Steering Wheel Switch Failure (without navigation)

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 567

Scheme 568

Scheme 569

Scheme 570

Scheme 571

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then start the vehicle and turn the steering wheel back and forth several times.
4. Check for DTCs with the HDS. Is DTC B1779 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Do the HFL Switch Test (see «HFL SWITCH TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES -Go to step 7. NO -Replace the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Remove the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ), and disconnect the 12P connector, then connect the cable reel connector A (20P).
9. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
10. Measure the voltage between audio remote-HFL switch 12P connector terminal No. 9 and body ground. Is there voltage? YES -Go to step 13 . NO -Go to step 11.
11. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
12. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 2 and audio remote-HFL switch 12P connector terminal No. 9. Is there continuity? YES -Go to step 17 . NO -Repair an open in the wire between the switch, the cable reel, and the HandsFreeLink control unit.
13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
14. Disconnect cable reel connector A (20P).
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Measure the voltage between HandsFreeLink control unit 28P connector terminal No. 2 and body ground. Is there voltage? YES -Repair a short to power in the wire between the HandsFreeLink control unit and the audio remote-HFL switch. NO -Replace the cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ).
17. Disconnect audio unit connector A (24P). NOTE: Eject all the disc(s) before disconnecting the audio unit to prevent damaging the CD player's load mechanism.
18. Check for continuity between audio remote-HFL switch 12P connector terminal No. 11 and audio unit connector A (24P) terminal No. 5. Is there continuity? YES -Replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Go to step 19.
19. Substitute a known-good cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ), and check for continuity between audio remote-HFL switch 12P connector terminal No. 11 and audio unit connector A (24P) terminal No. 5. Is there continuity? YES -Replace the original cable reel (see «CABLE REEL REPLACEMENT»(/acura/zdx/i-2009-2013/remont/airbag/#srs-supplemental-restraint-system) ). NO -Repair an open in the wire between the audio remote-HFL switch and the audio unit.

DTC B1780: HandsFreeLink Steering Wheel Switch Line Short

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 572

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the HDS to the DLC.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then start the vehicle and turn the steering wheel back and forth several times.
4. Check for DTCs with the HDS. Is DTC B1780 indicated? YES -Go to step 5. NO -Intermittent failure, the system is OK at this time.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Do the HFL Switch Test (see «HFL SWITCH TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES -Go to step 7. NO -Replace the audio remote, HFL-navigation voice control switch or audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).
7. Disconnect the HandsFreeLink control unit 28P connector.
8. Disconnect audio remote, HFL-navigation voice control switch or audio remote-HFL switch 12P connector.
9. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 2 and body ground. Is there continuity? YES -Repair a short to body ground in the wire. NO -Replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

DTC B1792: HandsFreeLink Control Module Error

Note. If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0) and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.
4. Check for DTCs with the HDS. Is DTC B1792 indicated? YES -Replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Intermittent failure, the system is OK at this time.

The MID displays and HFL message do not go away after pressing the HFL BACK button

Note. Check the vehicle battery condition first (see BATTERY TEST ).

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. Check for DTCs with the HDS. Are there any DTCs indicated? YES -Troubleshoot the indicated DTCs. NO -Go to step 4.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).
6. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. Are the messages cleared? YES -Replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ).

The HFL system does not recognize all voice commands

Note. Check the vehicle battery condition first (see BATTERY TEST ). Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information.

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. Check for DTCs. Are there any DTCs indicated? YES -Troubleshoot the indicated DTCs. NO -Go to step 4.
4. Check if client's concern is duplicated. Can the client's problem be duplicated? YES - With navigation, go to step 5. Without navigation, go to step 6 . NO -The system is OK at this time. Ask the client to demonstrate the concern. Try to duplicate the concern on a known-good vehicle. If the known-good vehicle has the same concern, it should be a characteristic of the system.
5. Check if the navigation system can recognize voice commands. Can the voice prompts be recognized? YES -Go to step 6. NO -Refer to the navigation system troubleshooting (see «VOICE CONTROL DOES NOT WORK/RESPOND»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__voice-control-does-not-workrespond) ).
6. Pair the client's phone to a known-good vehicle (same year and trim), and try to duplicate the concern. Can you duplicate the concern? YES -Call the HFL call center at 888-528-7876, and inquire if there are any known issues for the concern. If there are no known issues, explain to the client this is a system characteristic and cannot be improved at this time. NO - With navigation, substitute a known-good front HFL-navigation-ANC/active sound control microphone (see «FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__front-hfl-navigation-ancactive-sound-control-microphone-remo) ), and recheck. If the symptom/indication goes away, replace the original front HFL-navigation-ANC/active sound control microphone (see «FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__front-hfl-navigation-ancactive-sound-control-microphone-remo) ). If the symptom/indication is still present, replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). Without navigation, substitute a known-good front HFL-ANC/active sound control microphone (see «FRONT HFL-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ), and recheck. If the symptom/indication goes away, replace the original front HFL-ANC/active sound control microphone (see «FRONT HFL-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). If the symptom/indication is still present, replace the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

The HFL system is locked and the pass code has been lost or forgotten (without navigation)

Note. Check any official Honda service website for more service information about the HFL system. Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information.

1. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
3. From the Body Electrical menu, select HandsFreeLink.
4. Select Inspection, then select Pass code reset.
5. Follow the HDS prompts to reset the pass code.

The HFL messages and voice prompts cannot be heard or are weak (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). The HFL telephone sound comes from the front speakers, and the HFL voice prompts come from the center speaker.

Scheme 573

Scheme 574

Scheme 575

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Check that the audio system is operating normally and the speaker sound levels from different audio sources (AM/FM, XM, USB, CD or DVD, navigation, etc.). Is the sound normal? YES -Go to step 3. NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or No sound is heard from the speaker(s) (display is normal) troubleshooting (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) ).
3. Do the HFL Self-Diagnostic Function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__self-diagnostic-function) ). Do you hear the message "The hands free system is OK"? YES -Intermittent failure, the system is OK at this time. NO -Go to step 4.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
6. Turn the ignition switch to ON (II), or press the engine start/ stop button to select the ON mode.
7. Check for DTCs with the HDS. Are there any DTCs indicated? YES -Troubleshoot the indicated DTC(s). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Do the HFL Switch Test (see «HFL SWITCH TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES -Go to step 10. NO -Replace the audio remote, HFL-navigation voice control switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).
10. Disconnect audio-navigation unit connector B (24P) and the HandsFreeLink control unit 28P connector.
11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 respectively. Is there continuity? YES -Go to step 12. NO -There is an open in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.
12. Check for continuity between body ground and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 individually. Is there continuity? YES -There is a short to body ground in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness. NO -Go to step 13.
13. Check for continuity between the terminals of audio-navigation unit connector B (24P) according to the table. From terminal To terminals B5(BRN) B16(YEL), B17(GRY) B16(YEL) B17(GRY) Is there continuity between any of the terminals? YES -There is a short in the wires between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). If the symptom/indication is still present, replace the audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ).

The HFL messages and voice prompts cannot be heard or are weak (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). The HFL telephone sound comes from the front speakers, and the HFL voice prompts come from the center speaker.

Scheme 576

Scheme 577

Scheme 578

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Check that the audio system is operating normally and the speaker sound levels from different audio sources (AM/FM, XM, USB, CD, etc.). Is the sound normal? YES -Go to step 3. NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or No sound is heard from the speaker(s) (display is normal) troubleshooting (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) ).
3. Do the HFL Self-Diagnostic Function (see «SELF-DIAGNOSTIC FUNCTION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__self-diagnostic-function) ). Do you hear the message "The hands free system is OK"? YES -Intermittent failure, the system is OK at this time. NO -Go to step 4.
4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
5. Connect the HDS to the DLC (see «HOW TO CHECK FOR DTCS WITH THE HDS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__how-to-check-for-dtcs-with) ).
6. Turn the ignition switch to ON (II), or press the engine start/ stop button to select the ON mode.
7. Check for DTCs with the HDS. Are there any DTCs indicated? YES -Troubleshoot the indicated DTC(s). NO -Go to step 8.
8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
9. Do the HFL Switch Test (see «HFL SWITCH TEST»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES -Go to step 10. NO -Replace the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).
10. Disconnect audio unit connector B (24P) and the HandsFreeLink control unit 28P connector.
11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio unit connector B (24P) terminals No. 5 and No. 16 respectively. Is there continuity? YES -Go to step 12. NO -There is an open in the wire(s) between the HandsFreeLink control unit and the audio unit. Replace the affected shielded harness.
12. Check for continuity between body ground and audio unit connector B (24P) terminals No. 5 and No. 16 individually. Is there continuity? YES -There is a short to body ground in the wire(s) between the HandsFreeLink control unit and the audio unit. Replace the affected shielded harness. NO -Go to step 13.
13. Check for continuity between the terminals of audio unit connector B (24P) according to the table. From terminal To terminals B5(BRN) B16(YEL), B17(GRY) B16(YEL) B17 (GRY) Is there continuity between any of the terminals? YES -There is a short in the wires between the HandsFreeLink control unit and the audio unit. Replace the affected shielded harness. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). If the symptom/indication is still present, replace the audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ).

No sound when Bluetooth audio is used (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Set the fader and the balance positions to the center. Check if the cell phone with Bluetooth audio functions normally. Make sure the cell phone is properly paired. Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information. Check the connectors for poor connections or loose terminals.

Scheme 579

Scheme 580

Scheme 581

Scheme 582

Scheme 583

Scheme 584

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio system, and check for sound in each mode (AM/FM and CD or DVD). Is the sound normal? YES -Go to step 3. NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or No sound is heard from the speaker(s) (display is normal) troubleshooting (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) ).
3. Press the USB/AUX button, and check if it changes to Bluetooth audio source. Does the audio system change to Bluetooth audio source? YES -Go to step 4. NO -Go to «BLUETOOTH AUDIO DOES NOT WORK TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__bluetooth-audio-does-not-work-with) (see ).
4. Check if it is connected when switching to Bluetooth audio screen by pressing the USB/AUX button. Is NO CONNECTION displayed? YES -Go to «BLUETOOTH CELL PHONE CANNOT BE PAIRED TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__bluetooth-cell-phone-cannot-be-paired) (see ). NO -Go to step 5.
5. Check if the Bluetooth audio device can be played. Does the Bluetooth audio play? YES -Intermittent failure, the audio-navigation unit is OK at this time. NO -Go to step 6.
6. Turn on the audio system, and check for XM radio sound. Is the sound is normal? YES -Go to step 7. NO -Go to step 10 .
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Disconnect audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector.
9. Check for continuity between audio unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio-navigation unit connector HandsFreeLink control unit connector Wire color AUDIO R + C5 9 GRN AUDIO R- C13 23 WHT AUDIO L+ C6 10 BLK AUDIO L- C14 24 RED Is there continuity? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Disconnect these items: Audio-navigation unit connector C (14P) AcuraLink control unit (XM receiver) connector A (32P) (USA models) XM receiver connector A (14P) (Canada models) HandsFreeLink control unit 28P connector
12. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table. HandsFreeLink control unit connector Wire color AUDIO R + 9 GRN AUDIO R- 23 WHT AUDIO L+ 10 BLK AUDIO L- 24 RED Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit, then AcuraLink control unit (XM receiver) or XM receiver, and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 13.
13. Check for continuity between audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio-navigation unit connector HandsFreeLink control unit connector Wire color AUDIO R + C5 9 GRN AUDIO R- C13 23 WHT AUDIO L+ C6 10 BLK AUDIO L- C14 24 RED Is there continuity? YES -Go to step 14. NO -There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
14. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table. From terminal To terminals 22 (GRY) 9 (GRN), 23 (WHT), 10(BLK), 24(RED) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 15.
15. Reconnect audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector.
16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
17. Check if the Bluetooth audio device can be played. Does the Bluetooth audio play? YES -There is an internal malfunction where the connector for either the AcuraLink control unit (XM receiver) (USA models) or the XM receiver (Canada models) is connected. NO -Go to step 18.
18. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
19. Disconnect the HandsFreeLink control unit 28P connector.
20. Reconnect AcuraLink control unit (XM receiver) connector A (32P) (USA models) or XM receiver connector A (14P) (Canada models).
21. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
22. Check the operation of the reconnected unit. Is the system normal? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ).

No sound when Bluetooth audio is used (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Set the fader and the balance positions to the center. Check if the cell phone with Bluetooth audio functions normally. Make sure the cell phone is properly paired. Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information. Check the connectors for poor connections or loose terminals.

Scheme 585

Scheme 586

Scheme 587

Scheme 588

Scheme 589

Scheme 590

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio unit, and check for sound in each mode (AM/FM and CDs). Is the sound normal? YES -Go to step 3. NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or No sound is heard from the speaker(s) (display is normal) troubleshooting (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) ).
3. Press the USB/AUX button, and check if it changes to Bluetooth audio source. Does the audio system change to Bluetooth audio source? YES -Go to step 4. NO -Go to «BLUETOOTH AUDIO DOES NOT WORK TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__bluetooth-audio-does-not-work-without) (see ).
4. Check if it is connected when switching to Bluetooth audio screen by pressing the USB/AUX button. Is NO CONNECTION displayed? YES -Go to «BLUETOOTH CELL PHONE CANNOT BE PAIRED TROUBLESHOOTING»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__bluetooth-cell-phone-cannot-be-paired) (see ). NO -Go to step 5.
5. Check if the Bluetooth audio device can be played. Does the Bluetooth audio play? YES -Intermittent failure, the audio unit is OK at this time. NO -Go to step 6.
6. Turn on the audio unit, and check for sound in each mode (XM and USB). Is the sound is normal? YES -Go to step 7. NO -Go to step 10 .
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Disconnect audio unit connector C (14P) and the HandsFreeLink control unit 28P connector.
9. Check for continuity between audio unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio unit connector HandsFreeLink control unit connector Wire color AUDIO R + C5 9 GRN AUDIO R - C13 23 WHT AUDIO L+ C6 10 BLK AUDIO L- C14 24 RED Is there continuity? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
10. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
11. Disconnect these items: Audio unit connector C(14P) XM receiver connector A (14P) USB adapter control unit connector A (14P) HandsFreeLink control unit 28P connector
12. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table. HandsFreeLink control unit connector Wire color AUDIO R + 9 GRN AUDIO R- 23 WHT AUDIO L+ 10 BLK AUDIO L- 24 RED Is there continuity? YES -There is a short to body ground in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 13.
13. Check for continuity between audio unit connector-C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio unit connector HandsFreeLink control unit connector Wire color AUDIO R + C5 9 GRN AUDIO R- C13 23 WHT AUDIO L+ C6 10 BLK AUDIO L- C14 24 RED Is there continuity? YES -Go to step 14. NO -There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
14. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table. From terminal To terminals 22 (GRY) 9 (GRN), 23 (WHT), 10(BLK), 24(RED) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 15.
15. Reconnect the audio unit connector C (14P) and the HandsFreeLink control unit 28P connector.
16. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
17. Check if the Bluetooth audio device can be played. Does the Bluetooth audio play? YES -There is an internal malfunction in the connector for either the XM receiver or USB adapter control unit. NO -Go to step 18.
18. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
19. Disconnect the HandsFreeLink control unit 28P connector.
20. Reconnect XM receiver connector A (14P) and the USB adapter control unit connector A (14P).
21. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
22. Check the operation of the reconnected unit. Is the system normal? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ).

Bluetooth audio does not work (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check if the cell phone with Bluetooth audio functions normally. Make sure the cell phone is properly paired. Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information. Check the connectors for poor connections or loose terminals.

Scheme 591

Scheme 592

Scheme 593

Scheme 594

Scheme 595

Scheme 596

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio system, and press the USB/AUX button to select Bluetooth audio source. Does the audio system change to Bluetooth audio source? YES -Go to step 3. NO -Go to step 5
3. Check if the Bluetooth audio device can be played. Does the Bluetooth audio play? YES -Intermittent failure, the audio-navigation unit is OK at this time. NO -Go to step 4.
4. Pair and check the Bluetooth device function on a known-good vehicle equipped with Bluetooth audio. Is the Bluetooth device normal? YES -Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the cell phone is compatible with the HFL system and that there are no known issues. NO -The Bluetooth device is defective or is not compatible.
5. Check for the navigation system hard error code (see «HOW TO CHECK ERROR HISTORY (NAVIGATION DTCS)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__how-to-check-error-history-navigation) ). Are there any navigation DTC's related to the Display or XM systems? YES -Go to step 6. NO -Go to step 9 .
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector.
8. Check for continuity between audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio-navigation unit connector HandsFreeLink control unit connector Wire color GA-NET BUS+ C9 4 PNK GA-NET BUS- C10 5 BLU Is there continuity? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect these items: Audio-navigation unit connector C (14P) AcuraLink control unit (XM receiver) connector A (32P) (USA models) XM receiver connector A (14P) (Canada models) HandsFreeLink control unit 28P connector
11. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table. HandsFreeLink control unit connector Wire color GA-NET BUS+ 4 PNK GA-NET BUS- 5 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit, the AcuraLink control unit (XM receiver) or XM receiver, and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 12.
12. Check for continuity between audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio-navigation unit connector HandsFreeLink control unit connector Wire color GA-NET BUS + C9 4 PNK GA-NET BUS- C10 5 BLU Is there continuity? YES -Go to step 13. NO -There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
13. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table. From terminal To terminals 19(GRY) 4(PNK), 5(BLU) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shield harness. NO -Go to step 14.
14. Reconnect the audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector.
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Check if the Bluetooth device can be played. Does the Bluetooth audio play? YES -Intermittent failure, the system is OK at this time. Check for loose or poor connections at the AcuraLink control unit (XM receiver), or the XM receiver. NO -Go to step 17.
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect the HandsFreeLink control unit 28P connector.
19. Reconnect AcuraLink control unit (XM receiver) connector A (32P) or XM receiver connector A (14P), and the HandsFreeLink control unit 28P connector.
20. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
21. Check the operation of the reconnected unit. Is the system normal? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ).

Bluetooth audio does not work (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check if the cell phone with Bluetooth audio functions normally. Make sure the cell phone is properly paired. Make sure the client's phone is compatible with the Acura HFL system. See www.acura.com/handsfreelink for more information. Check the connectors for poor connections or loose terminals.

Scheme 597

Scheme 598

Scheme 599

Scheme 600

Scheme 601

Scheme 602

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio unit, and press the USB/AUX button to select Bluetooth audio source. Does the audio system change to Bluetooth audio source? YES -Go to step 3. NO -Go to step 5 .
3. Check if the Bluetooth device can be played. Does the Bluetooth audio play? YES -Intermittent failure, the audio unit is OK at this time. NO -Go to step 4.
4. Register and check the Bluetooth audio device function on a known-good vehicle equipped with Bluetooth audio. Is the Bluetooth device normal? YES -Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the cell phone is compatible with the HFL system and that there are no known issues. NO -The Bluetooth device is defective or is not compatible.
5. Turn on the audio unit, and check for sound in each mode (XM and USB). Is the sound is normal? YES -Go to step 6. NO -Go to step 9 .
6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
7. Disconnect audio unit connector C (14P) and the HandsFreeLink control unit 28P connector.
8. Check for continuity between audio unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio unit connector HandsFreeLink control unit connector Wire color GA-NET BUS + C9 4 PNK GA-NET BUS- C10 5 BLU Is there continuity? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Disconnect these items: Audio unit connector C (14P) XM receiver connector A (14P) USB adapter control unit connector A (14P) HandsFreeLink control unit 28P connector
11. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table. HandsFreeLink control unit connector Wire color GA-NET BUS + 4 PNK GA-NET BUS- 5 BLU Is there continuity? YES -There is a short to body ground in the wire(s) between the audio unit, the XM receiver, the USB adapter control unit, and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 12.
12. Check for continuity between audio unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio unit connector HandsFreeLink control unit connector Wire color GA-NET BUS + C9 4 PNK GA-NET BUS- C10 5 BLU Is there continuity? YES -Go to step 13. NO -There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
13. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table. From terminal To terminals 19(GRY) 4 (PNK), 5 (BLU) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio unit and the HandsFreeLink control unit. Replace the affected shield harness. NO -Go to step 14.
14. Reconnect audio unit connector C (14P) and the HandsFreeLink control unit 28P connector.
15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
16. Check if the Bluetooth device can be played. Does the Bluetooth audio play? YES -Intermittent failure, the system is OK at this time. Check for loose or poor connections at the XM receiver or the USB adapter control unit. NO -Go to step 17.
17. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
18. Disconnect the HandsFreeLink control unit 28P connector.
19. Reconnect XM receiver connector A (14P) and USB adapter control unit connector A (14P).
20. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
21. Check the operation of the reconnected unit. Is the system normal? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ).

Bluetooth cell phone cannot be paired

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check the connectors for poor connections or loose terminals. When six Bluetooth cell phones are already paired, delete a device before pairing another one (see PAIRING TROUBLESHOOTING ).

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Press the HFL TALK button. Does a beep sound? YES - If you have the client's Bluetooth cell phone, go to step 4 . If you have not the client's Bluetooth cell phone, go to step 3. NO -Go to «THE HFL MESSAGES AND VOICE PROMPTS CANNOT BE HEARD OR ARE WEAK TROUBLESHOOTING; WITH NAVIGATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__the-hfl-system-is-locked-and) (see ), without navigation (see «THE HFL MESSAGES AND VOICE PROMPTS CANNOT BE HEARD OR ARE WEAK (WITHOUT NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__the-hfl-messages-and-voice-prompts) ).
3. Pair a known-good Bluetooth cell phone to the client's vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -The client's Bluetooth cell phone is defective or not compatible. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).
4. Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the client's Bluetooth cell phone is compatible with the HFL system and that there are no known issues.
5. Pair the client's Bluetooth cell phone to a known-good vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -The client's Bluetooth cell phone is defective or not compatible.

The communication with cell phone is interrupted or changes (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check if the audio system functions normally. The connected device may not function properly when it is in the trunk or in a metallic case. Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the Bluetooth cell phone is compatible with the HFL system and that there are no known issues.

Scheme 603

Scheme 604

Scheme 605

Scheme 606

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio system, and check for sound in each mode (AM/FM and CD/DVDs). Is the sound normal? YES -Go to step 3. NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or No sound is heard from the speaker(s) (display is normal) troubleshooting (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) ).
3. Try and duplicate the symptom. Can you duplicate the symptom? YES -Substitute a known-good audio-navigation unit (including the HDD) (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see «AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#navigation-system__audio-navigation-unit-removalinstallation) ). NO -Go to step 4.
4. Check for communication problems with the paired phone. Does the symptom occur in a specific place or under a specific condition? YES -Operation is normal: Bluetooth audio is OK at this time. There is electric wave or other interference. NO - If you have the client's Bluetooth cell phone, go to step 6 . If you have not the client's Bluetooth cell phone, go to step 5.
5. Pair a known-good Bluetooth cell phone to the client's vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -The client's Bluetooth cell phone is defective or not compatible. NO -Go to step 7 .
6. Pair the client's Bluetooth cell phone to a known-good vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -Go to step 7. NO -The client's Bluetooth cell phone is defective or not compatible.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Check for poor connections or loose terminals at the HandsFreeLink control unit 28P connector and audio-navigation unit connector C (14P). Are there connections or terminals OK? YES -Go to step 9. NO -Repair poor connections or loose terminals, and recheck.
9. Disconnect the HandsFreeLink control unit 28P connector.
10. Disconnect audio-navigation unit connector C (14P).
11. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table. HandsFreeLink control unit connector Wire color AUDIO ft + 9 GRN AUDIO R- 23 WHT AUDIO L+ 10 BLK AUDIO L- 24 RED Is there continuity? YES -There is a short to body ground in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 12.
12. Check for continuity between audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table. Audio-navigation unit connector HandsFreeLink control unit connector Wire color AUDIO R + C5 9 GRN AUDIO R- C13 23 WHT AUDIO L+ C6 10 BLK AUDIO L- C14 24 RED Is there continuity? YES -Go to step 13. NO -There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.
13. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table. From terminal To terminals 22 (GRY) 9 (GRN), 23 (WHT), 10(BLK), 24(RED) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

The communication with cell phone is interrupted or changes (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check if the audio system functions normally. The connected device may not function properly when it is in the trunk or in a metallic case. Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the Bluetooth cell phone is compatible with the HFL system and that there are no known issues.

Scheme 607

Scheme 608

Scheme 609

Scheme 610

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio unit, and check for sound in each mode (AM/FM and CDs). Is the sound normal? YES -Go to step 3. NO -Go to Sound Quality Diagnosis (see «SOUND QUALITY DIAGNOSIS»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__sound-quality-diagnosis) ) or No sound is heard from the speaker(s) (display is normal) troubleshooting (see «NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__no-sound-is-heard-from-the) ).
3. Try and duplicate the symptom. Can you duplicate the symptom? YES -Substitute a known-good audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ), and recheck. If the symptom/indication goes away, replace the original audio unit (see «AUDIO UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ). NO -Go to step 4.
4. Check for communication problems with the paired phone. Does the symptom occur in a specific place or under a specific condition? YES -Operation is normal: Bluetooth audio is OK at this time. There is electric wave or other interference. NO - If you have the client's Bluetooth cell phone, go to step 6 . If you have not the client's Bluetooth cell phone, go to step 5.
5. Pair a known-good Bluetooth cell phone to the client's vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -The client's Bluetooth cell phone is defective or not compatible. NO -Go to step 7 .
6. Pair the client's Bluetooth cell phone to a known-good vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -Go to step 7. NO -The client's Bluetooth cell phone is defective or not compatible.
7. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
8. Check for poor connections or loose terminals at the HandsFreeLink control unit 28P connector and audio unit connector C (14P). Are there connections or terminals OK? YES -Go to step 9. NO -Repair poor connections or loose terminals, and recheck.
9. Disconnect the HandsFreeLink control unit 28P connector.
10. Disconnect audio unit connector C (14P).
11. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table. HandsFreeLink control unit connector Wire color AUDIO R + 9 GRN AUDIO R- 23 WHT AUDIO L+ 10 BLK AUDIO L- 24 RED Is there continuity? YES -There is a short to body ground in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Go to step 12.
12. Check for continuity between audio unit connector C (14P) terminals and the HandsFreeLink control unit 28P connector according to the table. Audio unit connector HandsFreeLink control unit connector Wire color AUDIO R + C5 9 GRN AUDIO R- C13 23 WHT AUDIO L+ C6 10 BLK AUDIO L- C14 24 RED Is there continuity? YES -Go to step 13. NO -There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
13. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table. From terminal To terminals 22 (GRY) 9 (GRN), 23 (WHT), 10 (BLK), 24 (RED) Is there continuity between any of the terminals? YES -There is a short in the wires between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).

Bluetooth cell phone audio function SKIP and PAUSE/RESUME do not work (with navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check the connectors for poor connections or loose terminals. Check if the audio system functions normally. Check if it functioned normally at the time of initial pairing. Some mobile phones do not support the function. Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the Bluetooth cell phone is compatible with the HFL system and that there are no known issues.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio system, and check that the MENU, the SKIP, and the TITLE buttons function normally with the audio-navigation and HVAC switch panel. Is the button operation OK? YES -Go to step 3. NO -Go to Audio unit button does not work troubleshooting (see «AUDIO SYSTEM BUTTON DOES NOT WORK (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system) ).
3. Check that music plays with the Bluetooth device. Is the system normal? YES - If you have the client's Bluetooth cell phone, go to step 5 . If you have not the client's Bluetooth cell phone, go to step 4. NO -Go to No sound when Bluetooth audio is used troubleshooting (see «NO SOUND WHEN BLUETOOTH AUDIO IS USED (WITH NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__no-sound-when-bluetooth-audio-is) ).
4. Pair a known-good cell phone to the client's vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -The client's Bluetooth cell phone is defective or not compatible. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).
5. Pair the client's phone to a known-good vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -The client's Bluetooth cell phone is defective or not compatible.

Bluetooth cell phone audio function SKIP and PAUSE/RESUME do not work (without navigation)

Note. Check the vehicle battery condition first (see BATTERY TEST ). Check the connectors for poor connections or loose terminals. Check if the audio system functions normally. Check if it functioned normally at the time of initial pairing. Some mobile phones do not support the function. Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the Bluetooth cell phone is compatible with the HFL system and that there are no known issues.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio unit, and check that the SKIP and the SETUP buttons function normally with the audio and HVAC switch panel. Is the audio unit operation OK? YES -Go to step 3. NO -Go to Audio unit button does not work troubleshooting (see «AUDIO UNIT BUTTON DOES NOT WORK (WITHOUT NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#audio-system__audio-unit-button-does-not-work) ).
3. Check that music plays with the Bluetooth device. Is the system normal? YES - If you have the client's Bluetooth cell phone, go to step 5 . If you have not the client's Bluetooth cell phone, go to step 4. NO -Go to No sound when Bluetooth audio is used troubleshooting (see «NO SOUND WHEN BLUETOOTH AUDIO IS USED (WITHOUT NAVIGATION)»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__no-sound-when-bluetooth-audio-is) ).
4. Pair a known-good cell phone to the client's vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -The client's Bluetooth cell phone is defective or not compatible. NO -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).
5. Pair the client's phone to a known-good vehicle. Can you pair the Bluetooth cell phone, and does it operate normally? YES -Substitute a known-good HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ), and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ). NO -The client's Bluetooth cell phone is defective or not compatible.

Note. Put on gloves to protect your hands. Take care not to scratch the dashboard and related parts.

Scheme 611

1. Remove the roof console (see step 5 under «HEADLINER REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/exteriorinterior-trim/#interior-trim__headliner-removalinstallation) ).
2. Remove the self-tapping screws and the front HFL-ANC/active sound control microphone (A).
3. Install the front HFL-ANC/active sound control microphone in the reverse order of removal.

Scheme 612

Scheme 613

Scheme 614

1. Remove the audio remote, HFL-navigation voice control switch or the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).
2. Measure the resistance between terminals No. 9 and No. 11 in each switch position according to the table. HFL SWITCH (WITH NAVIGATION) Position Resistance No button pressed About 10k ohms PICK-UP button pressed About 47 ohms HANG-UP button pressed About 220 ohms HFL SWITCH (WITHOUT NAVIGATION) Position Resistance No button pressed About 1 kohms HFL TALK button pressed About 46 ohms HFL BACK button pressed About 185 ohms
3. If the resistance is not as specified, replace the audio remote, HFL-navigation voice control switch or the audio remote-HFL switch (see «STEERING WHEEL DISASSEMBLY/REASSEMBLY»(/acura/zdx/i-2009-2013/remont/manual-power-steering/#power-steering-system) ).

HandsFreeLink Control Unit Removal/Installation

Note. Tell the client they need to write down all phone numbers stored in the HFL and the navigation imported phone book as there is no way to transfer the information in the original HandsFreeLink control unit to a new HandsFreeLink control unit.

Scheme 615

1. Remove the passenger's dashboard undercover (see «GLOVE BOX DAMPER REPLACEMENT»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#dashboard__glove-box-damper-replacement) ).
2. Remove the passenger's center console trim (see step 6 under «CENTER CONSOLE REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/gauges-instrument-panels/#consoles__center-console-removalinstallation) ).
3. Remove the self-tapping screws, and the HandsFreeLink control unit (A).
4. Install the HandsFreeLink control unit in the reverse order of removal. After replacing the HandsFreeLink control unit, tell the client: They need to pair their cell phones to the system. They need to set up their system preferences.

Scheme 616

1. Remove the HandsFreeLink control unit (see «HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION»(/acura/zdx/i-2009-2013/remont/entertainment-systems/#handsfreelink-system__handsfreelink-control-unit-removalinstallation) ).
2. Inspect the connector (A) and socket (B) terminals for a good pinfit to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 3.
3. Reconnect the connector, and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 4. Cavity Wire Color Test Condition Test: Desired Result Possible Cause if Desired Result is not Obtained 1 BLK Under all conditions Measure the voltage to body ground: There should be less than 0.2 V. Poor ground (G501) An open or high resistance in the wire 15 WHT Under all conditions Measure the voltage to body ground: There should be battery voltage. Blown No. 15 (10 A) fuse in the under-hood fuse/relay box An open in the wire 16 PUR Ignition switch in ACCESSORY (I) or ON (II), or the engine start/stop button to ACC mode or ON mode Measure the voltage to body ground: There should be battery voltage. Blown No. 18 (7.5 A) fuse in the driver's under-dash fuse/relay box An open in the wire
4. Disconnect the 28P connector again, and make this input test at the connector. If the test indicates a problem, find and correct the cause and check for B-CAN related DTCs, then recheck the system. If the input test proves OK, the HandsFreeLink control unit is faulty, replace it. Cavity Wire Color Test Condition Test: Desired Result Possible Cause if Desired Result is not Obtained 17 BLU Passenger's under-dash fuse/relay box connector D (28P) disconnected Check for continuity between terminal No. 17 and passenger's under-dash fuse/relay box connector D(28P) terminal No. 8: There should be continuity. An open in the wire Passenger's under-dash fuse/relay box connector D (28P) and climate control unit connector C (20P) disconnected Check for continuity to body ground: There should be no continuity. Short to body ground in the wire 18 PNK Passenger's under-dash fuse/relay box connector D (28P) disconnected Check for continuity between terminal No. 18 and passenger's under-dash fuse/relay box connector D (28P) terminal No. 7: There should be continuity. An open in the wire Passenger's under-dash fuse/relay box connector D (28P) and climate control unit connector C (20P) disconnected Check for continuity to body ground: There should be no continuity. Short to body ground in the wire

See also:
• BATTERY TEST
• DLC CIRCUIT TROUBLESHOOTING
• DTC U1280: COMMUNICATION BUS LINE ERROR (BUS-OFF)
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION
• FRONT HFL-NAVIGATION-ANC/ACTIVE SOUND CONTROL MICROPHONE REMOVAL/INSTALLATION
• STEERING WHEEL DISASSEMBLY/REASSEMBLY
• CABLE REEL REPLACEMENT
• GAUGE CONTROL MODULE REPLACEMENT
• VOICE CONTROL DOES NOT WORK/RESPOND
• SOUND QUALITY DIAGNOSIS
• NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION)
• AUDIO UNIT REMOVAL/INSTALLATION
• HOW TO CHECK ERROR HISTORY (NAVIGATION DTCS)
• AUDIO UNIT BUTTON DOES NOT WORK (WITHOUT NAVIGATION)
• HEADLINER REMOVAL/INSTALLATION
• GLOVE BOX DAMPER REPLACEMENT
• CENTER CONSOLE REMOVAL/INSTALLATION
• DTC TROUBLESHOOTING
• B1775
• B1776
• B1779
• B1780
• B1792
• THE MID DISPLAYS AND HFL MESSAGE DO NOT GO AWAY AFTER PRESSING THE HFL BACK BUTTON
• SELF-DIAGNOSTIC FUNCTION
• HFL SYSTEM TROUBLESHOOTING
• THE HFL SYSTEM IS LOCKED AND THE PASS CODE HAS BEEN LOST OR FORGOTTEN (WITHOUT NAVIGATION)
• THE HFL SYSTEM DOES NOT RECOGNIZE ALL VOICE COMMANDS
• VOICE CONTROL TIPS AND IMPROVING VOICE RECOGNITION
• THE HFL MESSAGES AND VOICE PROMPTS CANNOT BE HEARD OR ARE WEAK (WITH NAVIGATION)
• NO SOUND WHEN BLUETOOTH AUDIO IS USED (WITH NAVIGATION)
• BLUETOOTH AUDIO DOES NOT WORK (WITH NAVIGATION)
• BLUETOOTH AUDIO DOES NOT WORK (WITHOUT NAVIGATION)
• BLUETOOTH CELL PHONE CANNOT BE PAIRED
• THE COMMUNICATION WITH CELL PHONE IS INTERRUPTED OR CHANGES (WITH NAVIGATION)
• BLUETOOTH CELL PHONE AUDIO FUNCTION SKIP AND PAUSE/RESUME DO NOT WORK (WITH NAVIGATION)
• HOW TO CHECK FOR DTCS WITH THE HDS
• HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION
• PAIRING TROUBLESHOOTING