NISSAN LATIO 2009 Service Repair Manual

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Bluetooth Control Unit
Self-Diagnosis Function INFOID:0000000004306987
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 swit ches (SEND/END) stuck closed
• Vehicle speed pulse count
• Bluetooth Microphone connection test (with playback to operator)
• Bluetooth inquiry check
SELF-DIAGNOSIS MODE 15 (G) Ground
Bluetooth
ON indicator
LED Output – Bluetooth control
unit initialized
and paired with
phone Battery voltage
Bluetooth ON indica-
tor inoperative.
17 (GR) Ground Audio unit
switch 1 OutputACC/
ON Press Phone/End
switch 0V
Steering wheel audio
controls do not func-
tion.
Press SEEK UP
switch 0.75V
Press VOL UP
switch 2V
Except for above 5V
18 (P) Ground Audio unit
switch 2 OutputACC/
ON Press Phone/
Send switch 0V
Steering wheel audio
controls do not func-
tion.
Press SEEK
DOWN switch 0.75V
Press VOL
DOWN switch 2V
Except for above 5V
19 (B) Ground Audio unit
switch
ground Output – – – Steering wheel audio
controls do not func-
tion.
20 (B) – Cont-1 – – – – –
21 (B) – Cont-2 – – – – –
23 (B) – Cont-4 – – – – –
28 (O) Ground Vehicle
speed signal
(8–pulse) Input ON When vehicle
speed is approx.
40 km/h (25
MPH) Speed sensitive vol-
ume is inoperative.
29 (B) Ground Bluetooth
Microphone
power Output – – 5V
Bluetooth Micro-
phone inoperative.
33 – Bluetooth
antenna sig-
nal Input – – – –
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symptom
+ – Ignition
switch Operation

50, " 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 intera ctive Bluetooth microphone test will be performed. Follow
the voice prompt. If the Bluetooth microphone test fails refer to AV-50, " Workflow " .
9. Self-diagnosis mode is complete when the voice prom pt says "All diagnostic functions completed". A short
beep is heard.
Workflow INFOID:0000000004306988
Power Supply and Ground Circuit Ins pection for Bluetooth Control Unit INFOID:0000000004306989 WKIA6004E
55, " Removal and Installation " .
2 "Bluetooth antenna open" 1. Inspect harness connection. 2. Replace Bluetooth antenna. Refer to AV-55, " 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-28, " 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-55, " Removal and Installation " .

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OK or NG OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate caus e of malfunction before installing new fuse. Refer to PG-3 .
OK >> GO TO 3.
NG >> Check harness for open between Bluetooth control unit and fuse. OK >> Inspection End.
NG >> Repair or replace harness.
Basic Inspection of Hands-Free Phone INFOID:0000000004306990OK >> GO TO 2
NG >> GO TO 3 Terminals Ignition switch position
(+) (–) OFF ACC ON
Connector Terminal
B121 1
Ground Battery
voltage Battery
voltage Battery
voltage
2 0V Battery
voltage Battery
voltage
3 0V 0V Battery
voltage

OK >> INSPECTION END
NG >> Check steering wheel audio control switch circuit. OK >> Replace Bluetooth indicator. Refer to
AV-55, " Removal
and Installation " .
NG >> GO TO 4. OK >> Replace Bluetooth control unit. Refer to
AV-55," Removal and Installation " .
NG >> Repair or replace harness.
Steering Wheel Audio Control Switch Does Not Operate INFOID:0000000004306991 Steering Switch Check (With Bluetooth) " .
OK or NG OK >> GO TO 2.
NG >> Replace steering wheel audio control switch. AV-37, " Removal and Installation " .
OK >> Replace audio unit. Refer to
AV-37, " Removal and
Installation " .
NG >> GO TO 5. 4 - Ground : Approx. 12 V

AV
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NG >> Replace Bluetooth control unit. AV-55, " Removal and
Installation " .
Voice Activated Control F unction Does Not Operate INFOID:0000000004306992
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 OK >> GO TO 2.
NG >> Repair harness or connector.

YES >> GO TO 3.
NO >> Replace Bluetooth control unit. Refer to AV-55," Removal and Installation " .
OK >> Replace Bluetooth control unit. Refer to
AV-55, " Removal and Installation " .
NG >> Replace Bluetooth microphone. Refer to AV-55, " Removal and Installation " .
BLUETOOTH VOICE GUIDANCE IS NOT HEARD WHEN PRESSING STEERING WHEEL AUDIO
CONTROL SWITCH Steering Switch Check (With Bluetooth) " .
OK or NG OK >> GO TO 2.
NG >> Replace applicable parts. PKIB5037J
Terminals Continuity
Connector Terminal Connector Terminal
A: B121 9
B: M44 31
Yes
10 33
11 27

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OK or NG OK >> GO TO 3.
NG >> Repair harness or connector. OK >> GO TO 4.
NG >> Replace audio unit. Refer to AV-37, " Removal and Instal-
lation " .
OK >> Replace audio unit. Refer to
AV-37, " Removal and Installation " .
NG >> Replace Bluetooth control unit. Refer to AV-55, " Removal and Installation " .
Removal and Installation INFOID:0000000004306993
BLUETOOTH CONTROL UNIT Terminals
Continuity
Connector Terminal —
A: B121 9
Ground No
10
11