NISSAN TIIDA 2007 Service User Guide

AV-6
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AUDIO SYSTEM
FUNCTION DIAGNOSIS
AUDIO SYSTEM
System DiagramINFOID:0000000001728605
System DescriptionINFOID:0000000001728606
The audio system is equipped with following function. Each function is operated with audio switch or steering
switch.
FUNCTION DESCRIPTION
Operating signal
Audio system operation can be performed with audio switch or steering switch.
AM/FM Radio Mode
 AM/FM radio tuner is built into AV control unit.
 Audio signal is received by antenna, next it is input to AV control unit. AV control unit outputs the audio signal
to each speaker.
CD Mode
 CD function is built into AV control unit.
 AV control unit outputs audio signal to each speaker when CD is inserted to AV control unit.
Hands-free phone system
 Hands-free communication can be operated by connecting using Bluetooth® with cellular phone.
 Operation is performed by steering switch.
 Guide sound that is heard during operation is output from AV control unit to front speaker.
When a call is originated
 Spoken voice sound output from the microphone (Mic. Signal) is input to AV control unit. AV control unit out-
puts to cellular phone with Bluetooth
® communication as a TEL voice signal. Voice sound is then heard at
the other party.
When receiving a call Voice sound is input to own cellular phone from the other party. TEL voice signal is output to front speaker,
and the signal is input to AV control unit by establishing Bluetooth
® communication from cellular phone.
NATS AUDIO LINK
JPNIA0162GB
Function
AM/FM radio
CD
HANDS-FREE PHONE

AV
AUDIO SYSTEM
AV-7
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The link with the NATS IMMU implies that the AV control unit can basically only be operated if connected to the
matching NATS IMMU to which the AV control unit was initially fitted on the production line.
Since radio operation is impossible after the link with the NATS is disrupted, theft of the AV control unit is basi-
cally useless since special equipment is required to reset the AV control unit.
Initialization Process for AV control units That Are Linked to the NATS IMMU
New AV control units will be delivered to the factories in the “NEW” state, i.e. ready to be linked with the vehi-
cle's NATS. When the AV control unit in “NEW” state is first switched on at the factory, it will start up communi-
cation with the vehicle's immobilizer control unit (IMMU) and send a code (the “AV control unit Code”) to the
IMMU. The IMMU will then store this code, which is unique to each AV control unit, in its (permanent) memory.
Upon receipt of the code by the IMMU, the NATS will confirm correct receipt of the AV control unit code to the
AV control unit. Hereafter, the AV control unit will operate as normal.
During the initialization process, “NEW” is displayed on the AV control unit display. Normally though, communi-
cation between AV control unit and IMMU takes such a short time (300 ms) that the AV control unit seems to
switch on directly without showing “NEW” on its display.
Normal Operation
Each time the AV control unit is switched on afterwards, the AV control unit code will be verified between the
AV control unit and the NATS before the AV control unit becomes operational. During the code verification pro-
cess, “WAIT” is shown on the AV control unit display. Again, the communication takes such a short time (300
ms) that the AV control unit seems to switch on directly without showing “WAIT” on its display.
When The Radio Is Locked
In case of the AV control unit being linked with the vehicle's NATS (immobilizer system), disconnection of the
link between the AV control unit and the IMMU will cause the AV control unit to switch into the lock
(“SECURE”) mode in which the AV control unit is fully inoperative. Hence, repair of the AV control unit is basi-
cally impossible, unless the AV control unit is reset to the “NEW” state for which special decoding equipment is
required.
Clarion has provided their authorized service representatives with so called “decoder boxes” which can bring
the AV control unit back to the “NEW” state, enabling the AV control unit to be switched on after which repair
can be performed. Subsequently, when the repaired AV control unit is delivered to the final user again, it will
be in the “NEW” state to enable re-linking the AV control unit to the vehicle's immobilizer system. As a result of
the above, repair of the AV control unit can only be done by an authorized Clarion representative (when the
owner of the vehicle requests repair and can show personal identification).
Service Procedure
Item Service procedure Description
Battery disconnection No additional action required. –
Radio needs repair Repair needs to be done by authorized rep-
resentative of radio manufacturer since ra-
dio cannot be operated unless it is reset to
NEW state, using special decoding equip-
ment.–
Replacement of radio by new part No additional action required. Radio is delivered in “NEW” state.
Transferring radio to another vehicle/re-
placement of radio by an old partRadio needs to be reset to NEW state by
authorized representative of radio manu-
facturer.–
Replacement of IMMU Radio needs to be reset to NEW state by
authorized representative of Clarion.After switching on the radio, it will display
“SECURE” after 1 minute.
No communication from IMMU to radio 1. Check NATS system if NATS is mal-
functioning.
2. Reset radio to “NEW” state by autho-
rized representative of Clarion after
NATS is repaired.The radio will display “SECURE” after 1
minute after switching on the radio. Further
use of radio is impossible until communica-
tion is established again, or after radio is re-
set by authorized representative of Clarion.
When initialized between ECM and IMMU. Radio needs to be reset to “NEW” status by
authorized representative of Clarion.It will display “SECURE” after 1 minute after
switching on the radio.

AV-8
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AUDIO SYSTEM
Component Parts Location
INFOID:0000000001728607
Component DescriptionINFOID:0000000001728608
1. AV control unit M43, M44 2. Front door speaker
Driver side D12
Passenger side D1123. Rear door speaker
LH D207
RH D307
4. Front tweeter
LH M109
RH M475. Steering wheel audio control switch-
es M1026. Microphone R15
ALNIA0890GB
Part name Description
AV CONTROL UNIT Operational switch of audio system is integrated.
 Receiving function of AM/FM radio, replaying function of CD and hands-free
phone function are integrated.
 Audio signals are output to each speaker.
FRONT DOOR SPEAKER Outputs sound signal from AV control unit.
 Outputs high, mid and low range sounds.
REAR DOOR SPEAKER Outputs sound signal from AV control unit.
 Outputs high, mid and low range sounds.
FRONT TWEETER Outputs sound signal from AV control unit.
 Outputs high range sound.
STEERING SWITCH Operations for audio and hands-free phone are possible.
 Steering switch signal (operation signal) is output to AV control unit.
MICROPHONE Used for hands-free phone operation.
 Mic. signal is sent to AV control unit.
 Power (Mic. VCC) is supplied from AV control unit.
RADIO ANTENNA Radio signal received by antenna is sent to AV control unit.

AV
POWER SUPPLY AND GROUND CIRCUIT
AV-9
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COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis ProcedureINFOID:0000000001728609
1.CHECK FUSE
Check for blown fuses.
Is inspection result OK?
YES >> GO TO 2
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connector and ground.
Is inspection result OK?
YES >> GO TO 3
NO >> Check harness between AV control unit and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector.
3. Check continuity between AV control unit harness connector and ground.
Is inspection result OK?
YES >> INSPECTION END.
NO >> Repair harness or connector.
MICROPHONE
MICROPHONE : Diagnosis ProcedureINFOID:0000000001728770
1.CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)
1. Turn ignition switch ON.
Check voltage between microphone harness connector R15 terminal
4 and ground.
Is approximately 5V present?
YES >> GO TO 4
NO >> GO TO 2
Power source Fuse No.
Battery 27
Ignition switch ACC or ON 6
Signal name Connector No. Terminal No. Ignition switch position Value (Approx.)
Battery power supply M43 19 OFF 12V
ACC power supply M43 7 ACC 12V
Signal name Connector No. Terminal No. Ignition switch position Continuity
Ground M44 21 OFF Continuity should exist.
Signal nameConnector
No.Te r m i n a l N o .Ignition
switch posi-
tionValue (Ap-
prox.)
MIC power R15 4 ON 5V
WKIA5796E

AV-10
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POWER SUPPLY AND GROUND CIRCUIT
2.CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
1. Turn ignition switch OFF.
2. Disconnect microphone and AV control unit harness connectors.
3. Check continuity between microphone harness connector R15
(A) terminal 4 and AV control unit harness connector M44 (B)
terminal 29.
4. Check continuity between microphone harness connector R15
(A) terminal 4 and ground.
Are the continuity test results as specified?
YES >> GO TO 3
NO >> Repair harness or connector.
3.CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE)
1. Connect AV control unit harness connector.
2. Turn ignition switch to ACC.
3. Check voltage between AV control unit harness connector M44
terminal 29 and ground.
Is approximately 5V present?
YES >> Inspection End.
NO >> Replace AV control unit. Refer to XX-XX, "*****"
4.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect microphone harness connector R15 and AV control unit harness connector M44.
3. Check continuity between microphone harness connector R15 (A) terminal 2 and AV control unit harness
connector M44 (B) terminal 28.
Does continuity exist?
YES >> Inspection End.
NO >> Repair harness or connector.
AB
Continuity
Connector Terminal Connector Terminal
R15 4 M44 29 Yes
A
—Continuity
Connector Terminal
R15 4 Ground No
ALNIA0320GB
Signal nameConnector
No.Te r m i n a l
No.Ignition switch
positionValue (Approx.)
MIC power M44 29 ACC 5V
ALNIA0321GB
AB
Continuity
Connector Terminal Connector Terminal
R15 2 M44 28 Yes

AV
STEERING SWITCH
AV-11
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STEERING SWITCH
DescriptionINFOID:0000000001728773
When one of the steering wheel AV control switches is pushed, the resistance in the steering wheel AV control
switch circuit changes depending on which button is pushed.
Diagnosis ProcedureINFOID:0000000001728774
1.CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
1. Disconnect steering wheel audio control switch connector M102.
2. Check resistance between steering switch connector terminals.
Do the steering wheel audio control switches check OK?
YES >> GO TO 2
NO >> Replace steering wheel audio control switch. Refer to XX-XX, "*****"
.
2.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector M43 and spiral cable con-
nector M30.
3. Check continuity between AV control unit harness connector
M43 (A) and spiral cable harness connector M30 (B).
4. Check continuity between AV control unit connector M43 (A) and ground.
Are the continuity results as specified?
YES >> GO TO 3
NO >> Repair harness.
3.SPIRAL CABLE CHECK
Terminal Signal name ConditionResistance
(Ω)
(Approx.)
16 17Seek (down)
Depress switch.165
Volume (down) Depress VOL down switch. 487
Power Depress PWR switch. 0
20 17Seek (up)
Depress switch.165
Volume (up) Depress VOL up switch. 487
Mode Depress MODE switch. 0
WKIA4457E
AB
Continuity
Connector Terminal Connector Terminal
M436
M3024
Ye s 15 31
16 32
A
—Continuity
Connector Terminal
M436
Ground No 15
16
ALNIA0332GB

AV-12
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STEERING SWITCH
1. Disconnect spiral cable connector M102.
2. Check continuity between spiral cable harness connector M30
(A) and M102 (B).
Does the spiral cable check OK?
YES >> Inspection End.
NO >> Replace spiral cable. Refer to XX-XX, "*****"
.
Spiral cable
Continuity
Connector Terminal Connector Terminal
M3024
M10220
Ye s 31 17
32 16
ALNIA0333GB

AV
MICROPHONE SIGNAL CIRCUIT
AV-13
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MICROPHONE SIGNAL CIRCUIT
DescriptionINFOID:0000000001728771
Voice signals are transmitted from the microphone to the AV control unit using the microphone signal circuits.
Diagnosis ProcedureINFOID:0000000001728772
1.CHECK HARNESS BETWEEN AV CONTROL UNIT AND MICROPHONE
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and microphone connector.
3. Check continuity between AV control unit harness connector M44 and microphone harness connector
R15.
4. Check continuity between AV control unit harness connector M44 and ground.
Are the continuity test results as specified?
YES >> GO TO 2
NO >> Repair harness or connector.
2.CHECK MICROPHONE POWER SUPPLY
1. Connect AV control unit connector and microphone connector.
2. Turn ignition switch ON.
3. Check voltage between microphone harness connector R15 ter-
minal 4 and ground.
Is voltage reading approx. 5 volts?
YES >> GO TO 3
NO >> Replace AV control unit. Refer to XX-XX, "*****"
.
3.CHECK MICROPHONE SIGNAL
Check signal between AV control unit harness connector M44 terminals 27 and 28 with CONSULT-III or and
oscilliscope.
Te r m i n a l Te r m i n a l
Continuity
Connector Terminal Connector Terminal
M4427
R151
Ye s 28 2
29 4
Te r m i n a l
— Continuity
Connector Terminal
M447
Ground No 8
29
4 - Ground : Approx. 5V
WKIA5796E

AV-14
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MICROPHONE SIGNAL CIRCUIT
Are voltage readings as specified?
YES >> Replace AV control unit. Refer to XX-XX, "*****".
NO >> Replace microphone. Refer to XX-XX, "*****"
.
Connector(+) (-)
Reference signal
Terminal Terminal
M44 27 28While speaking into MIC
PKIB5037J

AV
AV CONTROL UNIT
AV-15
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ECU DIAGNOSIS
AV CONTROL UNIT
Reference ValueINFOID:0000000001728621
TERMINAL LAYOUT
PHYSICAL VALUES
JPNIA0230ZZ
Te r m i n a l
(Wire color)Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
2
(L)3
(G)Sound signal front LH OutputIgnition
switch
ONVoice output
4
(LG)5
(Y)Sound signal rear LH OutputIgnition
switch
ONVoice output
6
(R)15
(B)Steering switch signal A InputIgnition
switch
ONKeep pressing SOURCE
switch. 0 V
Keep pressing SEEK UP
switch.1.7 V
Keep pressing VOL UP
switch.3.3 V
Except for above. 5 V
7
(R)Ground ACC power supply InputIgnition
switch
ACC−Battery voltage
11
(BR)12
(P)Sound signal front RH OutputIgnition
switch
ONVoice output
SKIB3609E
SKIB3609E
SKIB3609E