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Acura CSX. Manual - part 668

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−

DTC B1780:

YES

23-381

HANDSFREELINK CONTROL UNIT 28P CONNECTOR

HFL STRG SW (BLU)

HFL Switch (HFL TALK/HFL BACK

Buttons) Circuit Short

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.

Go to step 4.

Intermittent failure, the system is OK at this

time.

4. Turn the ignition switch to LOCK (0).

5. Do the HFL switch test (see page 23-387).

Go to step 6.

Replace the HFL-voice control switch

(see page 23-357).

6. Disconnect the HandsFreeLink control unit 28P

connector.

7. Disconnect the HFL-voice control switch 5P

connector.

8. Check for continuity between HandsFreeLink

control unit 28P connector terminal No. 2 and body
ground.

Repair short in the wire between the

HandsFreeLink control unit and the HFL-voice
control switch.

Replace the HandsFreeLink control unit

(see page 23-388).

Wire side of female terminals

Is DT C B17 80 indicated?

Is the switch OK ?

Is ther e continuity?

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−

DTC B1792:

The HFL system does not recognize all voice
prompts

YES

23-382

HandsFreeLink System

Symptom Troubleshooting

HandsFreeLink Control Unit

Internal Error

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0), then turn it to

ON (II).

3. Check for DTCs with the HDS.

Replace the HandsFreeLink control unit.

Intermittent failure, the system is OK at this

time.

1. Connect the HDS to the DLC.

2. Clear the DTCs with the HDS.

3. Turn the ignition switch to LOCK (0), then turn it to

ON (II).

4. Check for DTCs.

Repair the indicated DTCs.

Go to step 5.

5. Check if the problem is duplicated.

Go to step 6.

The system is OK at this time. Ask the

customer to demonstrate the problem.

6. Check if the navigation system can recognize voice

prompts.

Go to step 7.

Refer to the navigation system

troubleshooting (see page 23-342).

7. Pair the client’s phone to a known-good vehicle and

try to duplicate the problem.

Call the HFL support desk at 888-528-7876,

and inquire if there are any known issues for the
problem. If there are no known issues, explain to
the client’s this is a system characteristic and
cannot be improved at this time.

Substitute a known-good HFL-navigation

microphone (see page 23-358). If the problem is
still present, substitute a known-good
HandsFreeLink control unit (see page 23-388). If the
problem goes away, replace the original HFL-
navigation microphone.

Is DT C B17 92 indicated?

Ar e ther e any DT Cs indicated?

Can the client’s pr oblem be duplicated?

Can the voice pr ompts be r ecognized?

Can you duplicate the pr oblem?

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−

DTC B1792:

The HFL system does not recognize all voice
prompts

YES

23-382

HandsFreeLink System

Symptom Troubleshooting

HandsFreeLink Control Unit

Internal Error

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0), then turn it to

ON (II).

3. Check for DTCs with the HDS.

Replace the HandsFreeLink control unit.

Intermittent failure, the system is OK at this

time.

1. Connect the HDS to the DLC.

2. Clear the DTCs with the HDS.

3. Turn the ignition switch to LOCK (0), then turn it to

ON (II).

4. Check for DTCs.

Repair the indicated DTCs.

Go to step 5.

5. Check if the problem is duplicated.

Go to step 6.

The system is OK at this time. Ask the

customer to demonstrate the problem.

6. Check if the navigation system can recognize voice

prompts.

Go to step 7.

Refer to the navigation system

troubleshooting (see page 23-342).

7. Pair the client’s phone to a known-good vehicle and

try to duplicate the problem.

Call the HFL support desk at 888-528-7876,

and inquire if there are any known issues for the
problem. If there are no known issues, explain to
the client’s this is a system characteristic and
cannot be improved at this time.

Substitute a known-good HFL-navigation

Is DT C B17 92 indicated?

Ar e ther e any DT Cs indicated?

Can the client’s pr oblem be duplicated?

Can the voice pr ompts be r ecognized?

Can you duplicate the pr oblem?

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−

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

HFL message cannot be heard or are weak

YES

23-383

1. Connect the HDS to the DLC.

2. Turn the ignition switch to ON (II).

3. From the Body Electrical menu, select

HandsFreeLink.

4. Select Miscellaneous Tests, then select Pass code

reset.

5. Follow the HDS prompts to reset the pass code.

1. Turn the ignition switch to ON (II).

2. Check that the audio system is operating normally,

and the speaker sound levels from different audio
sources (AM/FM, CDs, etc.).

Go to step 3.

Refer to the audio system symptom

troubleshooting.

3. Check the navigation voice recognition system.

Go to step 4.

Refer to the navigation system

troubleshooting.

4. Check the audio system when HFL messages are

played.

Go to step 5.

Go to step 10.

5. Turn the ignition switch to LOCK (0).

6. Disconnect navigation unit connector B (24P) and

the HandsFreeLink control unit 28P connector.

Does the audio system wor k nor mally, and is the
audio output f r om the speaker nor mal when
playing var ious audio sour ces?

Does the voice r ecognition system wor k pr oper ly?

Dose the audio system mute when HF L messages
ar e being played?

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