Infiniti Q45. Manual — part 317
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-135
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CD CHANGER
[ABNORMAL CONNECTION]
Without satellite radio
●
CD auto changer power supply and
ground circuit malfunction is detected
●
Malfunction is detected on communica-
tion signal [REQ (CHG-AUDIO), Tx and
RX] between audio unit and CD auto
changer
1. Check CD auto changer power supply and ground
circuit.
2. Check communication circuit [REQ (CHG-AUDIO),
Tx and RX] between audio unit and CD auto
changer.
3. Check communication signal [REQ (CHG-AUDIO),
Tx and RX] between audio unit and CD auto
changer.
4. If the results from the above checkup show no mal-
function, replace either audio unit or CD auto
changer, and then start self-diagnosis.
5. If self-diagnosis results still show any malfunction,
replace the other unit.
With satellite radio
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CD auto changer power supply and
ground circuit malfunction is detected
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Satellite radio tuner power supply and
ground circuit malfunction is detected
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Malfunction is detected on communica-
tion signal [REQ (CHG-AUDIO), REQ
(SAT-AUDIO), Tx and RX] between
audio unit and satellite radio tuner
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Malfunction is detected on control signal
(CONT) between audio unit and satellite
radio tuner
●
Malfunction is detected on communica-
tion signal [REQ (CHG-AUDIO), Tx and
Rx] between satellite radio tuner and CD
auto changer
1. Check CD auto changer power supply and ground
circuit.
2. Check satellite radio tuner power supply and ground
circuit.
3. Check communication circuit [REQ (CHG-AUDIO),
REQ (SAT-AUDIO), Tx and RX] between audio unit
and satellite radio tuner.
4. Check control signal circuit (CONT) between audio
unit and satellite radio tuner.
5. Check communication circuit [REQ (CHG-AUDIO),
Tx and Rx] between satellite radio tuner and CD
auto changer.
6. Check communication signal [REQ (CHG-AUDIO),
REQ (SAT-AUDIO), Tx and RX] between audio unit
and satellite radio tuner.
7. Check control signal (CONT) between audio unit
and satellite radio tuner.
8. Check communication signal [REQ (CHG-AUDIO),
Tx and Rx] between satellite radio tuner and CD
auto changer.
9. If the results from the above checkup show no mal-
function, replace audio unit, satellite radio tuner, or
CD auto changer, and then start self-diagnosis.
10.If self-diagnosis results still show any malfunction,
replace one of the two units that is not replaced yet.
11.If self-diagnosis results still show any malfunction,
replace the other unit.
FRONT SEAT DISPLAY
[ABNORMAL CONNECTION]
Display power supply and ground circuit
malfunction is detected
1. Check display power supply and ground circuit.
2. If the results from the above checkup show no mal-
function, replace display.
VOICE UNIT
[ABNORMAL CONNECTION]
●
Voice activated control module power
supply and ground circuit malfunction is
detected
●
Malfunction is detected on communica-
tion signal between AV control unit and
voice activated control module
1. Check voice activated control module power supply
and ground circuit.
2. Check communication circuit between AV control
unit and voice activated control module.
3. If the results from the above checkup show no mal-
function, replace either AV control unit or voice acti-
vated control module, and then start self-diagnosis.
4. If self-diagnosis results still show any malfunction,
replace the other unit.
Error item
Possible cause
Action to take
DI-136
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DATA MONITOR
●
Displays status of the vehicle signal input to the AV control unit.
(Refer to
DI-131, "CONFIRMATION/ADJUSTMENT MODE"
operation conditions for the connections to be indicated.)
●
For each signal, a comparison of actual operating status and the status recognized by the system can be
checked.
Multifunction Switch Self-Diagnosis Function
NKS001CR
It can check ON/OFF operation of each switch in the multifunction switch and diagnose the input signals to the
rear control switch (audio) and steering switch (audio).
DIAGNOSIS FUNCTION
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It can illuminate all the indicators (LED) in the multifunction switch.
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It can check for continuity of the switches by sounding the buzzer when the multifunction switch is
pressed.
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It can check for continuity of harness between multifunction switch and rear control switch (audio), or
steering switch (audio).
NOTE:
When it check continuity of harness between multifunction switch and rear control switch (audio), rear
control cancel switch is OFF position.
STARTING THE SELF-DIAGNOSIS MODE
1.
Turn ignition switch from OFF to ACC.
2.
Within 10 seconds, press and hold the function switches “1” and
“6 ”simultaneously for 5 seconds or more, when the buzzer
sounds at once.
3.
Release the function switches, when the buzzer sounds. And
self-diagnosis mode is started.
EXITING THE SELF-DIAGNOSIS MODE
●
Turn ignition switch OFF, or press and hold the function switches “1” and “6” simultaneously for 5 seconds.
Then the self-diagnosis ends.
PKIA9679E
Data monitor item
Condition
Remarks
VHCL SPD SIG
ON
Vehicle speed > 0 km/h (0 MPH)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal.
OFF
Vehicle speed = 0 km/h (0 MPH)
–
Ignition switch in ACC position
MTR ILL DIM
ON
Lighting switch ON
–
OFF
Lighting switch OFF
IGN SW
ON
Ignition switch ON
–
OFF
Ignition switch ACC or OFF
PKIB0257E
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
DI-137
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Power Supply and Ground Circuit Inspection for AV Control Unit
NKS001CS
1.
CHECK FUSE
Check for blown AV control unit fuses.
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
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connector M78 ter-
minals 2, 3, 6 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> 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
M78 terminals 1, 4 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Check ground harness.
Power Supply and Ground Circuit Inspection for Display
NKS001CT
1.
CHECK FUSE
Check for blown display fuses.
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
Unit
Power source
Fuse No.
AV control unit
Battery
52
Ignition switch ACC or ON
21
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
Connector
Terminal
M78
2
Ground
Battery voltage
Battery voltage
3
Battery voltage
Battery voltage
6
0 V
Battery voltage
PKIA9685E
1 – Ground
: Continuity should exist.
4 – Ground
PKIA9686E
Unit
Power souse
Fuse No.
Display
Battery
52
Ignition switch ACC or ON
21
DI-138
VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT
NAVIGATION SYSTEM
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between display harness connector M82 terminals
19, 21, 23 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Check harness between display and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display connector.
3.
Check continuity between display harness connector M82 termi-
nals 22, 24 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Check ground harness.
Power Supply and Ground Circuit Inspection for Multifunction Switch
NKS001CU
1.
CHECK POWER SUPPLY CIRCUIT
Check voltage between multifunction switch harness connector M83
terminal 1 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check harness between multifunction switch and fuse.
2.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect multifunction switch connector.
3.
Check continuity between multifunction switch harness connec-
tor M83 terminal 2 and ground.
OK or NG
OK
>> INSPECTION END
NG
>> Check ground harness.
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
Connector
Terminal
M82
19
Ground
0 V
Battery voltage
21
Battery voltage
Battery voltage
23
Battery voltage
Battery voltage
PKIA9687E
22 – Ground
: Continuity should exist.
24 – Ground
PKIA9688E
Terminals
Ignition switch position
(+)
(–)
OFF
ACC
Connector
Terminal
M83
1
Ground
0 V
Battery voltage
PKIA9689E
2 – Ground
: Continuity should exist.
PKIA9690E
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