Acura CSX. Manual — part 668
*01
SNR9ANGK734000Y1780FAAT00
−
−
−
−
−
−
DTC B1780:
YES
NO
YES
NO
YES
NO
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?
08/08/21 14:18:41 61SNR030_230_0384
SNR9ANGK734000Y1792FAAT00
SNR9ANGJ14233900000FAAT09
−
−
−
−
−
−
−
−
−
−
DTC B1792:
The HFL system does not recognize all voice
prompts
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
23-382
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?
08/08/21 14:18:41 61SNR030_230_0385
SNR9ANGK734000Y1792FAAT00
SNR9ANGJ14233900000FAAT09
−
−
−
−
−
−
−
−
−
−
DTC B1792:
The HFL system does not recognize all voice
prompts
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
23-382
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?
08/08/21 14:18:41 61SNR030_230_0385
SNR9ANGJ14233900000FAAT08
SNR9ANGJ14233900000FAAT12
−
−
−
−
−
−
The HFL system is locked and the pass code
has been lost or forgotten
HFL message cannot be heard or are weak
YES
NO
YES
NO
YES
NO
23-383
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?
08/08/21 14:18:42 61SNR030_230_0386
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