Ac system INFINITI FX35 2006 Service Manual

NAVIGATION SYSTEM AV-137
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Revision: 2006 December 2006 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionNKS003KJ
Performing self-diagnosis makes it possible to check operation of A/C and AV switch indicator (LED) and other
switch.
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “1” and “6” simultaneously for 3 seconds.
DIAGNOSIS FUNCTION
The following are checked:

All the indicators (LED) in the A/C and AV switch.

Continuity of the switches by sounding the buzzer when the A/C and AV switch and audio steering wheel
switch is pressed.

Continuity of harness between A/C and AV switch and audio steering wheel switch.
NOTE:
Rear window defogger switch operation is not checked (No beep sound even under normal status).
EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF.
SKIB8660E

AV-138
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
CAN Communication CheckNKS003KM
1. CHECK MONITOR DESCRIPTION
1. Start self-diagnosis of DCU. Refer to AV- 1 2 3 , "
Self-Diagnosis Mode (DCU)" .
2. Select “CAN DIAG SUPPORT MONITOR”. Refer to AV- 1 3 6 ,
"CAN DIAG SUPPORT MONITOR" .
3. Record each item display description (OK/NG/UNKWN) displayed on the following CAN DIAG SUPPORT MONITOR Check Sheet.
CAN DIAG SUPPORT MONITOR Check Sheet
>> After filling in CAN DIAG SUPPORT MONITOR Check Sheet, GO TO LAN-3, "
Precautions When
Using CONSULT-II" .
Item content
Error counter
(Reference value)
Normal condition Error (Example)
CAN_COMM OK NG 0 - 50
CAN_CIRC_1 OK UNKWN 0 - 50
CAN_CIRC_2 OK UNKWN 0 - 50
CAN_CIRC_3 OK UNKWN 0 - 50
CAN_CIRC_4 OK UNKWN 0 - 50
CAN_CIRC_5 OK UNKWN 0 - 50
CAN_CIRC_6 OK UNKWN 0 - 50
CAN_CIRC_7 OK UNKWN 0 - 50
CAN_CIRC_8 OK UNKWN 0 - 50
CAN_CIRC_9 UNKWN UNKWN 0 - 50
PKIB6080E
Diagnosis item Screen display Diagnosis item Screen display CAN_COMM OK NG CAN_CIRC_5 OK UNKWN
CAN_CIRC_1 OK UNKWN CAN_CIRC_6 OK UNKWN
CAN_CIRC_2 OK UNKWN CAN_CIRC_7 OK UNKWN
CAN_CIRC_3 OK UNKWN CAN_CIRC_8 OK UNKWN
CAN_CIRC_4 OK UNKWN CAN_CIRC_9 OK UNKWN

NAVIGATION SYSTEM AV-139
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Revision: 2006 December 2006 FX35/FX45
Unable to Operate System with A/C and AV SwitchNKS003KN
Symptom: Unable to operate A/C system, audio system and navigation system with A/C and AV switch.
(Unable to start self-diagnosis.)
1. CHECK CONDITION
1. Turn ignition switch ON.
2. Check if an image is displayed on the screen.
Is an image displayed on the screen?
YES >> GO TO 2.
NO >> Repair malfunctioning part. Refer to AV- 1 4 1 , "
All Images Are Not Displayed" .
2. SELF-DIAGNOSIS OF A/C AND AV SWITCH
Start self-diagnosis of A/C and AV switch, and check the self-diagnosis result. Refer to AV- 1 3 7 , "
A/C and AV
Switch Self-Diagnosis Function" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK A/C AND AV SWITCH POWER SUPPLY AND GROUND CIRCUIT
1. Check voltage between A/C and AV switch harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Disconnect A/C and AV switch connector.
4. Check continuity between A/C and AV switch harness connector M64 terminal 5 and ground.
OK or NG
OK >> Replace A/C and AV switch.
NG >> Repair harness or connector.
Te r m i n a l s
OFF ACC ON
(+)
(–)
Connector Terminal
M64 1
Ground Battery
voltage Battery
voltage Battery
voltage
20 V Battery
voltage Battery
voltage
5 – Ground : Continuity should exist.
SKIB7836E
SKIB7837E

AV-140
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
4. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and A/C and AV switch connectors.
3. Check continuity between display control unit harness connector (A) M76 terminals 28, 30 and A/C and AV switch harness con-
nector (B) M64 terminals 6, 8.
4. Check continuity between display control unit harness connector (A) M76 terminals 28, 30 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK A/C AND AV SWITCH AND DISPLAY CONTROL UNIT
1. Replace A/C and AV switch or display control unit.
2. Make sure that A/C system, audio system and navigation system can be operated by A/C and AV switch.
OK or NG
OK >> INSPECTION END
NG >> Replace the other unit. 28 – 6 : Continuity should exist.
30 – 8 : Continuity should exist.
28, 30 – Ground : Continuity should not exist.
SKIB7838E

NAVIGATION SYSTEM AV-141
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Revision: 2006 December 2006 FX35/FX45
All Images Are Not DisplayedNKS003KO
Symptom: RGB image is not displayed.
1. CHECK CONDITION
When operating audio and air conditioner, make sure that they operate correctly.
Do audio and air conditioner operate normally?
YES >> GO TO 2.
NO >> GO TO 5.
2. CHECK DISPLAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display connector.
3. Check continuity between display harness connector M63 termi- nal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK HARNESS
1. Disconnect display control unit connector.
2. Check continuity between display control unit harness connector (A) M75 terminals 2, 4, 5, 7 and display harness connector (B)
M63 terminals 2, 3, 13, 14.
3. Check continuity between display control unit harness connector (A) M75 terminals 2, 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector. 1 – Ground : Continuity should exist.
SKIB7839E
2 – 2 : Continuity should exist.
4 – 3 : Continuity should exist.
5 – 13 : Continuity should exist.
7 – 14 : Continuity should exist.
2, 4 – Ground : Continuity should not exist.
SKIB7840E

AV-142
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
4. CHECK DISPLAY POWER SUPPLY AND GROUND CIRCUIT (INVERTER AND SIGNAL)
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector M75 terminals 2 and 5.
4. Check voltage between display control unit harness connector M75 terminals 4 and 7.
OK or NG
OK >> Replace display.
NG >> Replace display control unit.
5. CHECK DISPLAY CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
1. Check voltage between display control unit harness connector terminals and ground.
2. Turn ignition switch OFF.
3. Disconnect display control unit connector.
4. Check continuity between display control unit harness connector M75 terminal 3 and ground.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness or connector. 2 – 5 : Approx. 9 V
SKIB7841E
4 – 7 : Approx. 9 V
SKIB7842E
Terminals
OFF ACC ON
(+)
(–)
Connector Terminal
M75 1
Ground Battery
voltage Battery
voltage Battery
voltage
10 0 V Battery
voltage Battery
voltage
3 – Ground : Continuity should exist.
SKIB7843E
SKIB7844E

NAVIGATION SYSTEM AV-143
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Revision: 2006 December 2006 FX35/FX45
Status Screen for Audio and A/C Is Not Displayed When Showing Map ScreenNKS003KQ
Symptom: Status screen is not displayed in the lower portion of map screen when operating audio system and
A/C system.
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check continuity between display control unit harness connector (A) M76 terminals 53, 55 and display harness connector (B)
M63 terminals 20, 8.
4. Check continuity between display control unit harness connector (A) M76 terminals 53, 55 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Check voltage waveform between display control unit harness connector M76 terminal 53 and ground with CONSULT-II or
oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Replace display.
3. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
Check voltage waveform between display control unit harness con-
nector M76 terminal 55 and ground with CONSULT-II or oscillo-
scope.
OK or NG
OK >> Replace display control unit.
NG >> Replace display. 53 – 20 : Continuity should exist.
55 – 8 : Continuity should exist.
53, 55 – Ground : Continuity should not exist.
SKIB7850E
53 – Ground:
SKIB7851ESKIB3598E
55 – Ground:
SKIB7852ESKIB3601E

AV-144
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
Vehicle Mark Is Not Displayed ProperlyNKS003KR
Symptom: Vehicle mark is not displayed at the vehicle driving position properly.
1. NAVIGATION SYSTEM ADJUSTMENT
1. Select “Navigation” in Confirmation/Adjustment mode, and adjust items, “Steering Angle Adjustment” and “Speed Calibration”. Refer to AV- 1 3 2 , "
Navigation" .
2. Check symptom with driving.
Is any malfunction observed?
YES >> GO TO 2.
NO >> INSPECTION END
2. SELF-DIAGNOSIS OF NAVI
Start self-diagnosis of NAVI, and check any malfunction related to GPS. Refer to AV- 1 2 6 , "
Self-Diagnosis
Mode (NAVI)" .
Is any malfunction related to GPS observed?
YES >> Repair malfunctioning part.
NO >> GO TO 3.
3. CHECK VEHICLE SIGNAL
Select “Vehicle Signals” in Confirmation/Adjustment mode, and check the vehicle speed signal and reverse
signal inputting to NAVI control unit. Refer to AV- 1 3 0 , "
VEHICLE SIGNALS" .
OK or NG
OK >> Limit of position detection capacity.
NG >>

Check NAVI control unit vehicle speed signal circuit, and repair malfunctioning part.

Check NAVI control unit reverse signal circuit, and repair malfunctioning part.

NAVIGATION SYSTEM AV-145
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Revision: 2006 December 2006 FX35/FX45
Tint Is Strange for The RGB ImageNKS003KS
Symptom: Tint of all RGB images is strange.
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit and display connectors.
3. Check the malfunctioning circuit according to the symptoms.

Light blue (Cyan) tinged screen
Check continuity between display control unit harness connector
(A) M76 terminal 50 and display harness connector (B) M63 ter-
minal 17.
Check continuity between display control unit harness connector
(A) M76 terminal 50 and ground.

Purple (Magenta) tinged screen
Check continuity between display control unit harness connector
(A) M76 terminal 52 and display harness connector (B) M63 ter-
minal 6.
Check continuity between display control unit harness connector
(A) M76 terminal 52 and ground.

Yellow tinged screen
Check continuity between display control unit harness connector
(A) M76 terminal 54 and display harness connector (B) M63 ter-
minal 18.
Check continuity between display control unit harness connector
(A) M76 terminal 54 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector. 50 – 17 : Continuity should exist.
50 – Ground : Continuity should not exist.
SKIB7853E
52 – 6 : Continuity should exist.
52 – Ground : Continuity should not exist.
SKIB7854E
54 – 18 : Continuity should exist.
54 – Ground : Continuity should not exist.
SKIB7855E

AV-146
NAVIGATION SYSTEM
Revision: 2006 December 2006 FX35/FX45
2. CHECK RGB SIGNAL
1. Connect display control unit and display connectors.
2. Turn ignition switch ON.
3. Start Confirmation/Adjustment mode. Refer to AV- 1 2 9 , "
Confirmation/Adjustment Mode" .
4. Display color bar by selecting “Display Color Spectrum Bar” on Display Diagnosis screen. Refer to AV-
130, "DISPLAY DIAGNOSIS" .
5. Check the malfunctioning circuit according to the symptoms.

Light blue (Cyan) tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 50 and ground with CONSULT-II or
oscilloscope.

Purple (Magenta) tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 52 and ground with CONSULT-II or
oscilloscope.

Yellow tinged screen
Check voltage waveform between display control unit harness
connector M76 terminal 54 and ground with CONSULT-II or
oscilloscope.
OK or NG
OK >> Replace display.
NG >> Replace display control unit. 50 – Ground:
SKIB7856ESKIB7769E
52 – Ground:
SKIB7857ESKIB7770E
54 – Ground:
SKIB7858ESKIB7771E