Handsfreelink System Acura RL II

Special Tools

For special tools, refer to AUDIO, NAVIGATION, AND TELEMATICS .

Scheme 1

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1. Make sure the ignition switch is in the LOCK (0) position.
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 ON (II).
4. Make sure the HDS communicates with the vehicle and the HandsFreeLink control unit. If it doesn't, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/rl/ii-2004-2008/remont/testing-diagnostics/#pgm-fi-system) ).
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/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system__dtc-troubleshooting) . If no DTCs are indicated, refer to «SYMPTOM TROUBLESHOOTING»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) . NOTE: After troubleshooting, clear the DTCs with the HDS. For specific operations, refer to the user's manual that came with the HDS.

General Operation

The HandsFreeLink (HFL) works only with an approved Bluetooth enabled cell phones with the Hands Free Profile. If you are not sure if your cell phone is compatible with the HFL - and not all phones are - Acura has a dedicated call center and web-site to answer your questions. On the web, go to www.acura.com, or dial the HFL call center at 888-528-7876 for further assistance. 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.

The HFL system gives the user the convenience of hands-free operation. It cannot control the phone's performance (call quality and signal strength). To avoid performance problems, don't put the phone in a metal briefcase or in a purse under the seat.

This section shows you just a few of the HFL's many features. You will learn how to pair a phone to the HFL system and then make and receive calls, all using simple voice commands. If you want a complete description of the system, please refer to the owner's manual and quick start guide.

Voice Control Tips

To give any voice commands to the HFL system, press and release the HFL Talk button. Always wait for the beep, then give your command in a clear, natural voice. The HFL microphone is on the ceiling, by the front spotlights.

If the HFL system doesn't recognize your voice command, you'll hear "Pardon." If after repeating your command, it still doesn't recognize it, you'll hear "Please repeat." If after repeating your command again, it still doesn't recognize it, the HFL system sends you to the Help menu.

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

You can give many voice commands together. For example, you can say "Dial 123-456-7890."

To give a string of numbers in a call or dial voice command, you can say them all at once, or separate them into blocks of 3, 4,7,10, or 11.

To skip a voice prompt, press and release the HFL Talk button while the HFL system is speaking. The HFL system begins listening for your next voice command.

To go back a step in a voice command sequence, press and release the HFL Back button, or say "Go back."

If you don't say anything while the HFL system is listening for your voice command, it will time out and stop its voice recognition. The next time you press and release the HFL Talk button, the HFL begins listening from the point where it timed out.

To stop a voice command sequence at anytime, press and hold the HFL Back button, or press and release the HFL Talk button, wait for the beep, and say "Cancel." The next time you press and release the HFL Talk button, the HFL system begins from its main menu. You'll see MAIN on the multi-information display (MID) in the instrument panel.

When you're done with a voice command sequence, the HFL system goes back to its main menu. The next time you press and release the HFL Talk button, you'll be at the main menu and you'll see MAIN on the MID.

Remember to press and hold the HFL Back button until you exit the main menu, otherwise, the audio system stays muted.

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

1. Close the windows and moonroof.
2. Set the fan speed to low (1 or 2).
3. Adjust the air flow from the air conditioning vents so that they do not blow against the microphone on the ceiling.
4. Speak in a clear and natural voice. If the system cannot recognize your command, speak louder.
5. If the microphone picks up voices other than yours, the system may not interpret your voice commands correctly.
6. If you speak with something in your mouth, or your voice is too husky, the system may misunderstand your command.

Pairing Your Cell Phone (A One Time Procedure)

You must pair an approved Bluetooth compatible phone to the HFL before you can make and receive calls. The following steps show you what you need to do. For a current list of approved phones and specific phone pairing instructions for each phone, go to www.acura.com. or dial the HFL support call center at 888-528-7876. You can also refer to the Owner's Manual, the phone's operating manual or the phone retailer. Make sure the vehicle is stationary when you pair the phone

Note. You cannot pair a phone if the vehicle is moving. Your phone must be in its Discovery mode. Up to six Bluetooth compatible phones can be paired by the HFL. Not all Bluetooth phones are compatible with the HFL. For a current list of approved Bluetooth phones, visit www.acura.com. or dial the HFL support call center at 888-528-7876.

1. Turn on your phone, and follow the cell phone manufacture's prompts to activate Bluetooth.
2. Give these voice commands to the HFL system by pressing the HFL Talk button. HFL TALK BUTTON REFERENCE You say You'll hear this from the HFL system "Phone setup" "Phone setup options are status, pair, edit, delete, and list." "Pair" "The pairing process requires operation of your mobile phone. For safety, only perform this function while the vehicle is stopped. State a four-digit code for pairing. Note this code, it will be requested by the phone." "1.2. 3. 4." (This can be any four-digit code you want.) "1. 2. 3. 4. is this correct?" "Yes" "Searching for a Bluetooth phone. Make sure the phone you are trying to pair is in Discovery mode!"
3. Follow the cell phone manufacturer's instructions to put the phone in its Discovery mode. The phone will search for the HFL. When you see HANDSFREELINK in the device list on the phone, select it.
4. When prompted, enter the four-digit PIN that you entered from step 2 into the phone. You will hear the HFL system say "A new phone has been found. Would you like to name this phone?"
5. Press and release the HFL Talk button, and say what the phone name will be. For example, say "John's phone". You'll hear "John's phone has been successfully paired, returning to the main menu".
6. To pair another phone, repeat steps 1 thru 5 .

Clearing the HFL system

Note. This operation clears the HFL system of all passcode(s), any paired 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 clear" and the HFL system will respond, "This process will clear all paired phone, clear all entries in the phonebook, clear the 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 all paired phone, all phonebook entries, the passcode. This may take up to 2 minutes to complete".
3. Press and release the HFL Talk button. After the beep, say "OK" to proceed, or say "Go back" or "Cancel".
4. If you said "OK", after a short period of time, the HFL system will respond, "System has been cleared. Returning to the main menu", the Clearing HFL system procedure is now complete.

Self-diagnostic Function

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

To run the self-diagnostic function, do the following

1. Turn the ignition switch to ACC (I).
2. Press and hold the HFL BACK button 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 is considered to start once the 5 seconds press and hold is detected, and ends when the units returns to idle state.

Symptom Troubleshooting Index

SYMPTOM TROUBLESHOOTING CHART

HFL System Troubleshooting

Note. You must be able to duplicate the client's concern to successfully diagnose and the problem. Always use the client's phone. Make sure the phone is approved and configured correctly. Online, go to www.acura.com, or call the HFL support desk at 888-528-7876 for further assistance.

1. Connect the HDS to the DLC.
2. Turn the ignition switch ON (II).
3. Check for DTCs. Are any DTCs indicated? YES - Repair the indicated DTCs and recheck. NO - Go to step 4.
4. Try to duplicate the problem. Can you duplicate the problem? YES - Go to step 5. NO - The system is OK at this time.
5. Pair the phone to a known-good vehicle (same model, year, and trim), and try to duplicate the problem. Does the phone have the same problem on the known-good vehicle? YES - Call the HFL support desk at 888-528-7876 to make sure the phone is configured correctly and has the correct software. If the 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 and recheck. If the problem goes away, replace the original HandsFreeLink control unit.

The MID displays an HFL message that does not go away after pressing the HFL BACK button

1. Connect the HDS to the DLC.
2. Clear the DTCs with the HDS.
3. Turn the ignition switch to LOCK (0), and then to ON (II).
4. Check for DTCs. Are there any DTCs indicate? YES - Repair the indicated DTCs and recheck. NO - Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Substitute a known-good HandsFreeLink control unit, then turn the ignition switch ON (II) and recheck the MID. Are the messages cleared? YES - Replace the original HandsFreeLink control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). NO - Replace the gauge control module (see «GAUGE CONTROL MODULE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/gauges-instrument-panels/#gauges__gauge-control-module-replacement) ).

The HFL system is locked and the pass code has been lost or forgotten

1. Connect the HDS to the DLC.
2. Turn the ignition switch ON (II).
3. From the "Body Electrical menu", then select "HandsFreeLink".
4. Select "Miscellaneous Tests", then select "Pass code reset".
5. Follow the HDS system prompts to reset the pass code.

HFL message cannot be heard or are weak

Note. Vehicles equipped with AcuraLink, go to AcuraLink messages cannot be heard or are weak.

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1. Turn the ignition switch ON (II).
2. Check that the audio system is operating normally and the speaker sound levels from different audio sources (AM/FM, XM, CD/DVDs, Navigation, etc.). Does the audio system work normally and is the audio output from the speaker normal when playing various audio sources? YES - Go to step 3. NO - Refer to the audio system symptom troubleshooting.
3. Check the audio system when HFL messages are played. Dose the audio system mute when HFL messages are being played? YES - Go to step 4. NO - Go to step 9 .
4. Turn the ignition switch to LOCK (0).
5. Disconnect audio unit connector connector C (40P) and HandsFreeLink control unit 28P connector.
6. Check for continuity between HandsFreeLink control unit 28P connector No. 11 and No. 25 terminals and audio unit connector C (40P) No. 13 and No. 12 terminals individually. Is there continuity? YES - Go to step 7. NO - Open in the wire(s) between HandsFreeLink control unit and audio unit. Replace the affected shielded harness.
7. Check for continuity between body ground and audio unit connector C (40P) No. 13 and No. 12 terminals individually. Is there continuity? YES - Short to body ground in the wire(s) between HandsFreeLink control unit and audio unit. Replace the affected shielded harness. NO - Go to step 8.
8. Check for continuity between the terminals of audio unit connector C (40P) according to the table. TERMINALS REFERENCE CHART From terminal To terminals C12 C11, C13 C13 C11 Is there continuity between any of the terminals? YES - Short in the wire(s) between HandsFreeLink control unit and audio unit. Replace the appropriate shielded harness. NO - Substitute a known-good HandsFreeLink control unit and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). If the symptom/ indication is still present, replace the audio unit.
9. Turn the ignition switch to LOCK (0).
10. Disconnect HandsFreeLink control unit 28P connector and audio unit connector C (40P).
11. Check for continuity between HandsFreeLink control unit 28P connector No. 3 terminal and audio unit connector C(40P) No. 14 terminal. Is there continuity? YES - Go to step 12. NO - Repair open in the wire between HandsFreeLink control unit and audio unit.
12. Check for continuity between body ground and HandsFreeLink control unit 28P connector No. 3 terminal. Is there continuity ? YES - Repair short to body ground in the wire between HandsFreeLink control unit and audio unit. NO - Substitute a known-good HandsFreeLink control unit and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). If the symptom/ indication is still present, replace the audio unit.

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DTC Troubleshooting

For the DTC Troubleshooting Index, refer to DTC TROUBLESHOOTING INDEX .

DTC B1775: Microphone Input/Output Short to Power/Open

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 B ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1775 indicated? YES - Go to step 4. NO - Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0).
5. Remove the roof console (see «ROOF CONSOLE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/interiorillumination-lights/#interior-lights) ) and the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard__glove-box-removalinstallation) ).
6. Disconnect the 28P connector from the roof console and the 22P connector from the HandsFreeLink control unit.
7. Turn the ignition switch ON (II).
8. Measure the voltage between HandsFreeLink control unit the 22P connector No. 9 terminal and body ground. Is there battery voltage? YES - Repair short in the wire between the HandsFreeLink control unit and the roof console. NO - Go to step 9.
9. Turn the ignition switch to LOCK (0).
10. Check for continuity between HandsFreeLink control unit 22P connector No. 9 terminal and roof console 28P connector No. 6 terminal. Is there continuity? YES - Substitute a known-good HandsFreeLink control unit, then recheck. If the symptom goes away, replace the original HandsFreeLink control unit. NO - Repair open in the wire between the HandsFreeLink control unit and the roof console.

DTC B1776: Microphone Input/Output Short to Ground/Open

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 ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back ON (II).
3. Check for DTCs with the HDS. Is DTC B1776 indicated? YES - Go to step 4. NO - Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0).
5. Remove the roof console (see «ROOF CONSOLE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/interiorillumination-lights/#interior-lights) ) and the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard__glove-box-removalinstallation) ).
6. Disconnect the 28P connector from the roof console and the 22P connector from the HandsFreeLink control unit.
7. Check for continuity between body ground and the No. 9 and No. 10 terminals of the HandsFreeLink control unit 22P connector individually, then between No. 8 and No. 9 terminals. Is there continuity? YES - Repair short in the wires between the HandsFreeLinks control unit and the roof console. NO - Go to step 8.
8. Check for continuity between the following terminals of the HandsFreeLink control unit connector (22P) and the roof console connector (28P). 22P: No. 9 No. 10 28P: No. 6 No. 5 Is there continuity? YES - Go to step 9. NO - Repair open in the wires between the HandsFreeLinks control unit and the roof console.
9. Disconnect the 14P connector from the navigation unit.
10. Check for continuity between body ground and the No. 21 and No. 22 terminals of the HandsFreeLink control unit 22P connector individually, then between No. 20 and No. 21 terminals. Is there continuity? YES - Repair short in the wires between the HandsFreeLink control unit and the navigation unit. NO - Go to step 11.
11. Check for continuity between the following terminals of the HandsFreeLink control unit connector (22P) and the navigation unit connector B (14P). 22P: No. 21 No. 22 14P: No. 6 No. 14 Is there continuity? YES - Substitute a known-good HandsFreeLink control unit, then recheck. If the symptom goes away, replace the original HandsFreeLink control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). If the symptom does not go away, replace the faulty navigation unit. NO - Repair open in the wires between the HandsFreeLink control unit and the navigation unit.

DTC B1779: HFL Switch or HFL Switch (HFL TALK/HFL BACK Buttons) Circuit Open/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 ).

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1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), then start the vehicle and turn the steering wheel back and forth several times.
3. Check for DTCs with the HDS. Is DTC B1779 indicated? YES - Go to step 4. NO - Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0).
5. Do the HFL switch test (see «HFL SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES - Go to step 6. NO - Replace the HFL switch (see «HFL SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ).
6. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard__glove-box-removalinstallation) ).
7. Disconnect the 22P connector from the HandsFreeLink control unit.
8. Disconnect the 6P connector from the HFL switch.
9. Turn the ignition switch ON (II).
10. Measure the voltage on the HFL switch connector No. 5 terminal. Is there voltage? YES - Repair short to power on the PUR wire. NO - Go to step 11.
11. Check for continuity between the HandsFreeLink control unit 22P connector No. 2 terminal and HFL switch 6P connector No. 5 terminal. Is there continuity? YES - Go to step 12. NO - Repair open in the RED/BLK wire between the switch, cable reel, and HandsFreeLink control unit.
12. Check for continuity between the HFL switch 6P connector No. 2 terminal and the audio unit connector A (20P) No. 11 terminal. Is there continuity? YES - Check for loose or poor connections at the audio unit, HandsFreeLink control unit, and HFL switch. If the connections are OK, substitute a known-good HandsFreeLink control unit. If the problem is gone, replace the original control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). NO - Repair open in the wire between the switch, cable reel, and the audio unit.

DTC B1780: HFL Switch (HFL TALK/HFL BACK Buttons) Circuit 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 17

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), then start the vehicle and turn the steering wheel back and forth several times.
3. Check for DTCs with the HDS. Is DTC B1780 indicated? YES - Go to step 4. NO - Intermittent failure, the system is OK at this time.
4. Turn the ignition switch to LOCK (0).
5. Do the HFL switch test (see «HFL SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ). Is the switch OK? YES - Go to step 6. NO - Replace the HFL switch (see «HFL SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ).
6. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard__glove-box-removalinstallation) ).
7. Disconnect the 22P connector from the HandsFreeLink control unit.
8. Disconnect the 6P connector from the HFL switch.
9. Turn the ignition switch to LOCK (0).
10. Check for continuity between the HandsFreeLink control unit 22P connector No. 2 terminal and body ground. Is there continuity? YES - Repair short in the wire. NO - Replace the HandsFreeLink control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) ).

DTC B1792: HandsFreeLink Control Unit Internal Error

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back ON (II).
3. Check for DTCs with the HDS.

Is DTC B1792 indicated?

YES - Replace the HandsFreeLink control unit.

NO - Intermittent failure, the system is OK at this time.

Scheme 18

1. Remove the driver's airbag (see «DRIVER'S AIRBAG REPLACEMENT»(/acura/rl/ii-2004-2008/remont/airbag/#srs-supplemental-restraint-system) ).
2. Disconnect the 6P connector (A).
3. Remove the two screws and HFL switch (B).
4. Measure the resistance between the No. 5 and No. 2 terminals in each switch position according to the table. HFL Switch TERMINALS RESISTANCE CHART Position Resistance OFF About 1 kohms HFL Talk button pressed About 227 ohms HFL Back button pressed About 47 ohms
5. If the resistance is not as specified, replace the switch.

Scheme 19

1. Remove the throttle actuator control module, adaptive cruise control (ACC) unit (see «ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/cruise-control-systems/#adaptive-cruise-control-system) ) and the HandsFreeLink control unit (see «HFL CONTROL UNIT REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/entertainment-systems/#handsfreelink-system) )
2. Disconnect the 22P connector (A) from the HandsFreeLink control unit (B).
3. Inspect the connector and socket 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 4.
4. 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 5. WIRE CAVITY REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 13 BLK Under all conditions Measure the voltage to ground: There should be less than 1 V. Poor ground (G651) An open in the wire 11 WHT Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 5 (7.5 A) fuse in the driver's under-dash fuse/relay box An open in the wire 1 PUR Ignition switch ACC (I) or ON (II) Measure the voltage to ground: There should be battery voltage. Blown No. 32 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire
5. Disconnect the 22P connector again, and make this input test at the connector. If the test indicates a problem, find and correct the cause, then recheck the system. If the input test proves OK, the HandsFreeLink control unit must be faulty, replace it. WIRE CAVITY REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 14 LT GRN Under all conditions Check for continuity between No. 14 terminal and the driver's under-dash fuse/relay box connector X (39P) No. 27 terminal: There should be continuity. An open in the wire Driver's under-dash fuse/relay box connector X (39P) disconnected Check for continuity to ground: There should be no continuity. Short to ground

Microphone Removal/Installation

Note. Put on gloves to protect your hands. Take care not to scratch the dashboard and related parts. Lay a workshop towel under the parts when working on them to protect the face panel from scratches or other damage.

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1. Remove the roof console (see «ROOF CONSOLE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/interiorillumination-lights/#interior-lights) ).
2. Remove the screws and the printed circuit board (A).
3. Disconnect the connector (A) from the printed circuit board. Remove the bracket (B) and the microphone (C).
4. Install the microphone in the reverse order of removal.

Scheme 22

1. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/exteriorinterior-trim/#dashboard__glove-box-removalinstallation) ).
2. Remove the passenger's under-dash fuse/relay box (see «PASSENGER'S UNDER-DASH FUSE/RELAY BOX REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/remont/body-electrical/#under-dash-fuserelay-box) ).
3. Remove the bolts from the bracket (A) that holds the HFL control unit (B), the throttle actuator control module, and the ACC unit.
4. Disconnect the connectors from the HFL control unit.
5. Remove the HFL control unit from the bracket.
6. Install the HFL control unit in the reverse order of removal.

See also:
• AUDIO, NAVIGATION, AND TELEMATICS
• DLC CIRCUIT TROUBLESHOOTING
• GAUGE CONTROL MODULE REPLACEMENT
• DTC TROUBLESHOOTING INDEX
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE B
• ROOF CONSOLE REPLACEMENT
• GLOVE BOX REMOVAL/INSTALLATION
• DRIVER'S AIRBAG REPLACEMENT
• ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION
• PASSENGER'S UNDER-DASH FUSE/RELAY BOX REMOVAL/INSTALLATION
• INDICATED DTC TROUBLESHOOTING
• SYMPTOM TROUBLESHOOTING
• THE MID DISPLAYS AN HFL MESSAGE THAT DOES NOT GO AWAY AFTER PRESSING THE HFL BACK BUTTON
• HFL SYSTEM TROUBLESHOOTING
• CLEARING THE HFL SYSTEM
• VOICE CONTROL TIPS
• HFL MESSAGE CANNOT BE HEARD OR ARE WEAK