2008 NISSAN LATIO service

AV-48
< SERVICE INFORMATION >
TELEPHONE
Bluetooth Control Unit Self-Diagnosis Function
INFOID:0000000001704682
The Bluetooth control unit has two diagnostic checks. The first diagnostic check is performed automatically
every ignition cycle during control unit initialization. The second diagnostic check is performed by the techni-
cian using the steering wheel audio control switches prior to trouble diagnosis.
BLUETOOTH CONTROL UNIT INITIALIZATION CHECKS
• Internal control unit failure
• Bluetooth antenna connection open or shorted
• Steering wheel audio control switches (SEND/END) stuck closed
• Vehicle speed pulse count
• Bluetooth Microphone connection test (with playback to operator)
• Bluetooth inquiry check
SELF-DIAGNOSIS MODE
15 (G) GroundBluetooth
ON indicator
LEDOutput –Bluetooth control
unit initialized
and paired with
phoneBattery voltageBluetooth ON indica-
tor inoperative.
17 (GR) GroundAudio unit
switch 1OutputACC/
ONPress Phone/End
switch 0V
Steering wheel audio
controls do not func-
tion. Press SEEK UP
switch0.75V
Press VOL UP
switch2V
Except for above 5V
18 (P) GroundAudio unit
switch 2OutputACC/
ONPress Phone/
Send switch 0V
Steering wheel audio
controls do not func-
tion. Press SEEK
DOWN switch0.75V
Press VOL
DOWN switch2V
Except for above 5V
19 (B) GroundAudio unit
switch
groundOutput – – –Steering wheel audio
controls do not func-
tion.
20 (B) – Cont-1 – – – – –
21 (B) – Cont-2 – – – – –
23 (B) – Cont-4 – – – – –
28 (O) GroundVehicle
speed signal
(8–pulse)Input ONWhen vehicle
speed is approx.
40 km/h (25
MPH)Speed sensitive vol-
ume is inoperative.
29 (B) GroundBluetooth
Microphone
powerOutput – – 5VBluetooth Micro-
phone inoperative.
33 –Bluetooth
antenna sig-
nalInput – – – – Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
PKIC0643E

TELEPHONE
AV-49
< SERVICE INFORMATION >
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1. Turn ignition switch to ACC or ON.
2. Wait for the Bluetooth system to complete initialization and the Bluetooth ON indicator to stop flashing.
This may take up to 10 seconds.
3. Press and hold the steering wheel audio control switch SEND
button for at least 5 seconds. The Bluetooth system will begin to
play a verbal prompt.
4. While the prompt is playing, momentarily press both the steering
wheel audio control switches SEND and END buttons simulta-
neously. The Bluetooth system will sound a 5 second beep.
5. While the beep is sounding, momentarily press both the steering
wheel audio control switches SEND and END buttons simulta-
neously again.
6. The Bluetooth system has now entered into the diagnostic
mode. Results of the diagnostic checks will be verbalized to the
technician and the Bluetooth ON indicator will flash. Refer to AV-
49, "Workflow".
7. If there are no failure records to report, the speed pulse count
will be reported next.
8. After the speed pulse count is reported, an interactive Bluetooth microphone test will be performed. Follow
the voice prompt. If the Bluetooth microphone test fails refer to AV-49, "
Workflow".
9. Self-diagnosis mode is complete when the voice prompt says "All diagnostic functions completed". A short
beep is heard.
WorkflowINFOID:0000000001704683
Power Supply and Ground Circuit Inspection for Bluetooth Control UnitINFOID:0000000001704684
1.CHECK FUSES
Make sure the following fuses for the Bluetooth control unit are not blown.
WKIA6003E
WKIA6004E
Flashing Pattern
(Bluetooth ON indicator)Failure Message Action
1 "Internal failure"Replace Bluetooth control unit. Refer to AV-
54, "Removal and Installation".
2 "Bluetooth antenna open" 1. Inspect harness connection.
2. Replace Bluetooth antenna. Refer to
AV- 5 4 , "
Removal and Installation". 3 "Bluetooth antenna shorted"
4"Phone/Send for the Hands Free Phone
System is stuck"Check steering wheel audio control switch-
es. Refer to AV- 2 7 , "
Steering Switch Check
(With Bluetooth)".
5"Phone/End for the Hands Free Phone
System is stuck"
–"Bluetooth Microphone test" (failed interac-
tive test)1. Inspect harness between Bluetooth
control unit and Bluetooth micro-
phone.
2. Replace Bluetooth microphone. Refer
to AV- 5 4 , "
Removal and Installation".

AV-50
< SERVICE INFORMATION >
TELEPHONE
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3.
2.CHECK POWER SUPPLY CIRCUIT
1. Disconnect Bluetooth control unit connector B121.
2. Check voltage between connector terminals and ground as fol-
lows.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between Bluetooth control unit and fuse.
3.CHECK GROUND CIRCUITS
1. Turn ignition switch OFF.
2. Check continuity between the following Bluetooth control unit
terminals and ground.
OK or NG
OK >> Inspection End.
NG >> Repair or replace harness.
Basic Inspection of Hands-Free PhoneINFOID:0000000001704685
1.CHECK INDICATOR OPERATION
1. Turn ignition switch ACC.
2. Check that the indicator is blinking.
OK or NG
OK >> GO TO 2
NG >> GO TO 3
2.CHECK STEERING WHEEL AUDIO CONTROL SWITCH OPERATION
Te r m i n a l s
Ignition Switch Fuse No.
Connector Terminal
B1211 All positions 27
2 ACC/ON 20
3 ON/START 3
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Connector Terminal
B1211
GroundBattery
voltageBattery
voltageBattery
voltage
20VBattery
voltageBattery
voltage
30V0VBattery
voltage
WKIA4389E
Te r m i n a l s
Continuity
Connector Terminal —
B1214
Ground Yes 20
21
23
LKIA0794E

TELEPHONE
AV-51
< SERVICE INFORMATION >
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1. Press the SEND switch.
2. Check the indicator is blinking.
OK or NG
OK >> INSPECTION END
NG >> Check steering wheel audio control switch circuit.
3.CHECK BLUETOOTH INDICATOR OUTPUT VOLTAGE
1. Disconnect Bluetooth microphone connector.
2. Check voltage between Bluetooth microphone connector R15
terminal 4 and ground.
OK or NO
OK >> Replace Bluetooth indicator. Refer to AV-54, "Removal
and Installation".
NG >> GO TO 4.
4.CHECK BLUETOOTH INDICATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector B121 and Bluetooth microphone connector R15.
3. Check continuity between Bluetooth control unit connector B121
(A) terminal 15 and Bluetooth microphone connector R15 (B)
terminal 4.
OK or NO
OK >> Replace Bluetooth control unit. Refer to AV-54,
"Removal and Installation".
NG >> Repair or replace harness.
Steering Wheel Audio Control Switch Does Not OperateINFOID:0000000001704686
1.CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect steering wheel audio control switch connector.
3. Check steering wheel audio control switch. Refer to AV-27, "
Steering Switch Check (With Bluetooth)".
OK or NG
OK >> GO TO 2.
NG >> Replace steering wheel audio control switch. AV-36, "
Removal and Installation".
2.CHECK AUDIO UNIT
1. Turn ignition switch ON.
2. Check voltage between audio unit harness connector M43 ter-
minals 6, 16 and ground.
OK or NG
OK >> Replace audio unit. Refer to AV-36, "Removal and
Installation".
NG >> GO TO 5.4 - Ground : Approx. 12 V
LKIA0774E
15 - 4 : Continuity should exist
LKIA0775E
6 - Ground : Approx. 5 V
16 - Ground : Approx. 5 V
LKIA0776E

AV-52
< SERVICE INFORMATION >
TELEPHONE
3.CHECK BLUETOOTH CONTROL UNIT
1. Turn ignition switch ON.
2. Check voltage between Bluetooth control unit harness connec-
tor B121 terminals 17, 18 and ground.
OK or NG
OK >> Repair or replace harness.
NG >> Replace Bluetooth control unit. AV-54, "
Removal and
Installation".
Voice Activated Control Function Does Not OperateINFOID:0000000001704687
NOTE:
Even under the normal condition, Bluetooth voice guidance may not occur when pressing steering wheel
audio control switch.
BLUETOOTH VOICE GUIDANCE IS HEARD WHEN PRESSING STEERING WHEEL AUDIO CON-
TROL SWITCH
1.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNIT AND BLUETOOTH MICROPHONE
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector and Bluetooth microphone connector.
3. Check continuity between Bluetooth control unit connector B121
(A) and Bluetooth microphone connector R15 (B).
4. Check continuity between Bluetooth control unit harness con-
nector B121 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2.CHECK BLUETOOTH MICROPHONE POWER SUPPLY
1. Connect Bluetooth control unit connector and Bluetooth microphone connector.
2. Turn ignition switch ON.17 - Ground : Approx. 5 V
18 - Ground : Approx. 5 V
LKIA0777E
Te r m i n a l s
Continuity
Connector Terminal Connector Terminal
A: B1216
B: R156
Ye s 78
87
29 5
Te r m i n a l s
Continuity
Connector Terminal —
A: B1217
Ground No 8
29
LKIA0778E

TELEPHONE
AV-53
< SERVICE INFORMATION >
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3. Check voltage between Bluetooth microphone connector R15
terminal 5 and ground.
YES or NO
YES >> GO TO 3.
NO >> Replace Bluetooth control unit. Refer to AV-54,
"Removal and Installation".
3.CHECK MIC. SIGNAL
1. Check signal between Bluetooth control unit harness connector
B121 terminals 7 and 8.
OK or NG
OK >> Replace Bluetooth control unit. Refer to AV-54, "Removal and Installation".
NG >> Replace Bluetooth microphone. Refer to AV-54, "
Removal and Installation".
BLUETOOTH VOICE GUIDANCE IS NOT HEARD WHEN PRESSING STEERING WHEEL AUDIO
CONTROL SWITCH
1.CHECK STEERING WHEEL AUDIO CONTROL SWITCH CIRCUIT
Refer to AV-27, "
Steering Switch Check (With Bluetooth)".
OK or NG
OK >> GO TO 2.
NG >> Replace applicable parts.
2.CHECK BLUETOOTH VOICE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector and audio unit connector.
3. Check continuity between Bluetooth control unit harness con-
nector B121 (A) and audio unit harness connector M44 (B).
4. Check continuity between Bluetooth control unit harness con-
nector B121 (A) and ground.5 - Ground : Approx. 5 V
LKIA0779E
7 – 8:When giving a voice
LKIA0780EPKIB5037J
Te r m i n a l s
Continuity
Connector Terminal Connector Terminal
A: B1219
B: M4431
Ye s 10 33
11 2 7
LKIA0781E

AV-54
< SERVICE INFORMATION >
TELEPHONE
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK MUTE SIGNAL
1. Connect Bluetooth control unit connector and audio unit connector.
2. Turn ignition switch ON.
3. Check voltage between Bluetooth control unit connector B121
terminal 11 and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace audio unit. Refer toAV-36, "
Removal and Instal-
lation".
4.CHECK BLUETOOTH VOICE SIGNAL
1. Check signal between Bluetooth control unit harness connector
B121 terminals 9 and 10.
OK or NG
OK >> Replace audio unit. Refer to AV-36, "Removal and Installation".
NG >> Replace Bluetooth control unit. Refer to AV-54, "
Removal and Installation".
Removal and InstallationINFOID:0000000001704688
BLUETOOTH CONTROL UNIT
Te r m i n a l s
Continuity
Connector Terminal —
A: B1219
Ground No 10
11
11 - Ground : Approx. 5 V
LKIA0782E
9 – 10:When giving a voice
LKIA0783ESKIB3609E

TELEPHONE
AV-55
< SERVICE INFORMATION >
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Hatchback
Sedan
LKIA0762E
1. Bluetooth control unit bracket 2. Bluetooth control unit A. Blue tooth control unit bolts
B. BLuetooth antenna feeder harness
clip (hatchback only)C. Bluetooth antenna feeder harness con-
nectorD. Bluetooth control unit connector
E. Bluetooth control unit bracket
screws⇐Front
LKIA0936E