egr INFINITI FX35 2004 Owner's Guide

INTEGRATED DISPLAY SYSTEM
AV-77
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MA
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AV
Revision: 2004 November 2004 FX35/FX45
A/C and AV Switch Self-Diagnosis FunctionAKS00BOH
It can check ON/OFF operation of each switch in the A/C and AV switch and diagnose the input signals to the
steering switch (audio).
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “MUTE/II ” and
“PREV ” 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 is pressed.

Continuity of harness between A/C and AV switch and steering switch (audio).
EXITING THE SELF-DIAGNOSIS MODE

Turn ignition switch OFF. Then the self-diagnosis ends.
SKIA4972E

AV-78
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Trouble Diagnosis Chart by SymptomAKS00BOI
Symptom Check item
No screen is shown.

Display unit power supply and ground circuit. Refer to AV- 7 9 , "Power Supply
and Ground Circuit Check for Display Unit" .

Display unit
Screen does not switch to nighttime mode after the
lighting switch is turned ON.

Illumination signal. Refer to AV-81, "Illumination Signal Inspection" .

Display unit
TRIP and FUEL ECON screen do not appear.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Display unit

Trip odometer (DIST) is not added up.

Average vehicle speed (AVG) is not displayed.

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

Display unit
Average fuel consumption (AVG) is not displayed.

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

Display unit
Distance to empty (DTE) is not displayed.

Check if speedometer operates. If it does not operate, go to DI-17, "Vehicle
Speed Signal Inspection" .

Check if fuel gauge operates. If it does not operate, go to DI-20, "Fuel Level
Sensor Signal Inspection 1" .

CAN communication line. Refer to DI-22, "Communication Line Inspection" .

Display unit
Tire pressure is not displayed.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Low tire pressure warning control unit. Refer to WT-17, "Self-Diagnosis" .

CAN communication line. Refer to DI-22, "Communication Line Inspection" .

Display unit
Door warning screen does not appear.

Ignition signal. Refer to AV- 8 2 , "Ignition Signal Inspection" .

Vehicle speed signal. Refer to AV- 8 0 , "Vehicle Speed Signal Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

Display unit
A/C and AV switch and all switch operation are not
possible.
(Do not start self-diagnosis.)Refer to AV-84, "
A/C and AV Switch Does Not Operate" .
Air conditioner operation is not possible.

A/C and AV switch. Refer to AV-41, "A/C and AV Switch Inspection" .

CAN communication line. Refer to AV- 8 5 , "CAN Communication Line Inspec-
tion" .

INTEGRATED DISPLAY SYSTEM
AV-79
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AV
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for Display UnitAKS00BOJ
1. CHECK FUSE
Make sure that the following fuses in display unit are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown be sure to eliminate case of malfunction before installing new fuse. Refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between display unit harness connector terminals
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector.
3. Check continuity between display unit harness connector M62
terminals 6 (B), 15 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Signal Fuse No.
Display unitBattery power supply 32
Ignition switch ACC or ON 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
M621 (W/L) GroundBattery
voltageBattery
voltageBattery
voltage
2 (LG/R) Ground 0VBattery
voltageBattery
voltage
SKIB0373E
6, 15 – ground : Continuity should exist.
SKIA4986E

AV-80
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for A/C and AV SwitchAKS00BOK
1. CHECK FUSE
Check if the following fuses in A/C and AV switch are blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown be sure to eliminate case of malfunction before installing new fuse. Refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between A/C and AV switch harness connector
terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch connector.
3. Check continuity between A/C and AV switch harness connector
M64 terminal 5 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Vehicle Speed Signal InspectionAKS00BOL
1. VEHICLE SPEED OPERATION CHECK
Does speedmeter is operated normally?
YES or NO
YES >> GO TO 2.
NO >> Check combination meter trouble diagnosis. Refer to DI-13, "
Diagnosis Flow" .
Unit Power source Fuse No.
A/C and AV switchBattery 32
Ignition switch ACC or ON 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
M641 (W/L) GroundBattery
voltageBattery
voltageBattery
voltage
2 (LG/R) Ground 0VBattery
voltageBattery
voltage
SKIA8937E
5 – Ground : Continuity should exist.
SKIA4988E

INTEGRATED DISPLAY SYSTEM
AV-81
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AV
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display unit connector and unified meter and A/C amp. connector.
3. Check continuity between display unit harness connector M62
terminal 7 (R/G) and unified meter and A/C amp. harness con-
nector M56 terminal 26 (R/G).
4. Check continuity between display unit harness connector M62
terminal 7 (R/G) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK VEHICLE SPEED SIGNAL
1. Connect unified meter and A/C amp. connector.
2. Drive vehicle at a constant speed.
3. Check the signal between display unit harness connector M62
terminal 7 (R/G) and ground with CONSULT-II or oscilloscope.
OK or NG
OK >> Replace display unit.
NG >> Check unified meter and A/C amp. system, refer to DI-17, "
Vehicle Speed Signal Inspection" .
Illumination Signal InspectionAKS00BOM
1. CHECK ILLUMINATION SIGNAL
1. Check voltage between display unit and ground.
OK or NG
OK >> INSPECTON END
NG >> Repair harness or connector.7 – 26 : Continuity should exist.
7 – Ground : Continuity should not exist.
SKIA4989E
7 – Ground:
SKIA4991E
PKIA1935E
Terminals
Lighting switch position
(+)
(–)
ConnectorTerminal
(Wire color)ON OFF
M62 4 (R/L) Ground Approx. 12V Approx. 0V
SKIB0446E

AV-82
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
Ignition Signal InspectionAKS00BON
1. CHECK IGNITION SIGNAL
1. Disconnect display unit connector.
2. Turn ignition switch ON.
3. Check voltage between display unit harness connector M62 ter-
minal 3 (G/R) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Audio Communication Line InspectionAKS00BOO
1. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and display unit connector.
3. Check continuity between audio unit harness connector termi-
nals and display unit harness connector terminals.
4. Check continuity between display unit harness connector termi-
nals and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.3 – Ground : Battery voltage
SKIB0447E
Terminals
Continuity Display unit Audio unit
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
M628 (LG)
M6023 (LG)
Ye s 10 (B/Y) 21 (B/Y)
925
SKIA9935E
Terminals
Continuity Display unit
Ground Connector Terminal (Wire color)
M628 (LG)
No
10 (B/Y)
SKIA9936E

INTEGRATED DISPLAY SYSTEM
AV-83
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AV
Revision: 2004 November 2004 FX35/FX45
2. CHECK AUDIO UNIT
1. Connect audio unit connector.
2. Turn ignition switch ON.
3. Check voltage between audio unit harness connector M60 ter-
minal 23 (LG) and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace audio unit.
3. CHECK DISPLAY UNIT
1. Turn ignition switch OFF.
2. Dsconnect audio unit connector, and connect display unit connector.
3. Turn ignition switch ON.
4. Check voltage between display unit harness connector M62 ter-
minal 10 (B/Y) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace display unit.
4. CHECK AUDIO TX COMMUNICATION SIGNAL
1. Turn ignition switch OFF.
2. Connect audio unit connector.
3. Turn ignition switch ON.
4. Check signal between display unit harness connector M62 ter-
minal 8 (LG) and ground with CONSULT-ll or oscilloscope.
OK or NG
OK >> GO TO 5.
NG >> Replace dispaly unit.23 – Ground : Approx. 4V
SKIA9484E
10 – Ground : Approx. 4V
SKIA9485E
8 – Ground:
SKIA4995E
SKIA4402E

AV-84
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
5. CHECK AUDIO RX COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check signal between display unit harness connector M62 ter-
minal 10 (B/Y) and ground with CONSULT-ll or oscilloscope.
OK or NG
OK >> INSPECTION END
NG >> Replace audio unit.
A/C and AV Switch Does Not OperateAKS00BOP
1. CHECK A/C AND AV SWITCH
Check A/C and AV switch. Refer to AV- 4 1 , "
A/C and AV Switch Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
2. CHECK A/C AND AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector and A/C and AV switch connector.
3. Check continuity between display unit and A/C and AV switch.
4. Check continuity between display unit and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.10 – Ground:
SKIA4999E
SKIA4403E
Terminals
Continuity Display unit A/C and AV switch
ConnectorTerminal
(Wire color)ConnectorTe r m i n a l
(Wire color)
M6211 (B/R)
M646 (B/R)
Ye s 13 (W/R) 8 (W/R)
12 7
SKIB0523E
Terminals
Continuity Display unit
Ground Connector Terminals
M6211 ( B / R )
No
13 (W/R)
SKIA7146E

INTEGRATED DISPLAY SYSTEM
AV-85
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AV
Revision: 2004 November 2004 FX35/FX45
3. CHECK AV COMMUNICATION SIGNAL
1. Replace A/C and AV switch.
2. Check A/C and AV switch if it functions normally.
OK or NG
OK >> INSPECTION END
NG >> Replace display unit switch.
CAN Communication Line InspectionAKS00BOQ
1. CHECK MONITOR DESCRIPTION
1. Start display unit self-diagnosis. Refer to AV- 7 4 , "
Self-Diagnosis Mode" .
2. Select “CAN DIAG MNTR”. Refer to AV- 7 6 , "
CAN DIAG MNTR
(CAN DIAG MONITOR)" .
3. Record each item display description (OK/NG/UKNWN) displayed on the following CAN DIAG MONITOR
Check Sheet.
CAN DIAG MONITOR Check Sheet
>> After filling in CAN DIAG MONITOR Check Sheet, go to LAN-4, "
Precautions When Using CON-
SULT-II" .
Audio Steering Wheel Switch InspectionAKS00BOR
1. A/C AND AV SWITCH SELF-DIAGNOSIS FUNCTION
1. Start A/C and AV switch self-diagnosis function. Refer to AV- 3 5 , "
A/C and AV Switch Self-Diagnosis Func-
tion" .
2. Operate audio steering wheel switch.
Does the audio steering wheel switch is operated normally?
YES >> INSPECTION END (System is OK)
NO >> GO TO 2
Diagnosis itemData monitor display description
Normal conditionAbnormal condition
(example)
CANCOMM OK NG
CAN1 OK UNKWN
CAN2 OK UNKWN
CAN3 OK UNKWN
CAN4 OK UNKWN
CAN5 OK UNKWN
CAN6 OK UNKWN
CAN7 OK UNKWN
CAN8 OK UNKWN
CAN9 OK UNKWN
SKIA5927E
Diagnosis item Screen display Diagnosis item Screen display
CANCOMM OK NG CAN5 OK UNKWN
CAN1 OK UNKWN CAN6 OK UNKWN
CAN2 OK UNKWN CAN7 OK UNKWN
CAN3 OK UNKWN CAN8 OK UNKWN
CAN4 OK UNKWN CAN9 OK UNKWN

AV-86
INTEGRATED DISPLAY SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/C and AV switch connector and spiral cable connector (Vehicle harness side).
3. Check continuity between spiral cable harness connector termi-
nals and A/C and AV switch harness connector terminals.
4. Check continuity between A/C and AV switch harness connector
terminals and ground.
OK or NG
OK >> GO TO 3
NG >> Repair harness or connector.
3. CHECK SPIRAL CABLE
1. Disconnect spiral cable connector (Audio steering wheel switch harness side).
2. Check continuity between spiral cable connector terminals.
OK or NG
OK >> GO TO 4
NG >> Replace spiral cable.
Terminals
Continuity Spiral cable A/C and AV switch
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
M1524 (R/G)
M6412 (R/G)
Ye s 31 (B/Y) 14 (B/Y)
32 (G/W) 13 (G/W)
Te r m i n a l s
Continuity A/C and AV switch
Ground Connector Terminal (wire color)
M6412 (R/G)
No 13 (G/W)
14 (B/Y)
SKIB0522E
Terminals
Continuity Spiral cable
ConnectorTerminal
(Wire color)Connector Terminal
M1524
M20320
Ye s 31 17
32 16
SKIB0521E