control INFINITI FX35 2004 Service Manual

AV-148
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
5. CHECK HARNESS
1. Disconnect display control unit connector.
2. Check continuity between display harness connector M63 termi-
nals 13 (P), 14 (P/L) and display control unit harness connector
M75 terminals 5 (P), 7 (P/L).
OK or NG
OK >> Replace display control unit.
NG >> Repair harness or connector.
6. CHECK GROUND CIRCUIT
Check continuity between display harness connector M63 terminal 1
(B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.13 – 5 : Continuity shold exist.
14 – 7 : Continuity shold exist.
SKIB0449E
1 – Ground : Continuity should exist.
SKIB0451E

NAVIGATION SYSTEM
AV-149
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AV
Revision: 2004 November 2004 FX35/FX45
Power Supply and Ground Circuit Check for A/C and AV SwitchAKS00BNA
1. CHECK FUSE
Make sure that the following fuses of the A/C and AV switch 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
1. Check voltage between AC 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 terminals 5 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Vehicle Speed Signal Check for NAVI Control UnitAKS00BNB
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 Signal Fuse No.
A/C and AV switchBattery power supply 32
ACC power supply 6
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTe r m i n a l
(Wire color)
M641 (W/L)
GroundBattery
voltageBattery
voltageBattery
voltage
2 (LG/R) 0VBattery
voltageBattery
voltage
SKIA8937E
5 – Ground : Continuity should exist.
SKIA8938E

AV-150
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and unified meter and A/C amp. connector.
3. Check continuity between NAVI control unit harness connector
B207 terminal 28 (GY) and unified meter and A/C amp. harness
connector M56 terminal 26 (R/G).
4. Check continuity between NAVI control unit harness connector
B207 terminal 28 (GY) 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. Start engine.
3. Drive vehicle at a constant speed.
4. Check signal between NAVI control unit harness connector
B207 terminal 28 (GY) and ground with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> INSPECTION END
NG >> Check combination meter system. Refer to DI-17, "
Veh i-
cle Speed Signal Inspection" .
Vehicle Speed Signal Check for Display Control UnitAKS00BNC
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" . 28 – 26 : Continuity should exist.
28 – Ground : Continuity should not exist.
PKIA2861E
28 – Ground : Refer to AV- 1 2 1 , "Terminals
and Reference Value for NAVI
Control Unit" .
PKIA2863E

NAVIGATION SYSTEM
AV-151
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Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and combination unified meter and A/C amp. connector.
3. Check continuity between display control unit harness connector
M75 terminal 16 (R/G) and unified meter and A/C amp. harness
connector M56 terminal 26 (R/G).
4. Check continuity between display control unit harness connector
M75 terminal 16 (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. Start the engine.
3. Drive vehicle at a constant speed.
4. Check signal between display control unit harness connector
M75 terminal 16 (R/G) and ground with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> INSPECTION END
NG >> Check unified meter and A/C amp. system. Refer to DI-
17, "Vehicle Speed Signal Inspection" .
Illumination Signal Check for NAVI Control UnitAKS00BND
1. CHECK ILLUMINATION SIGNAL
1. Check voltage between NAVI control unit harness connector ter-
minals and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.16 – 26 : Continuity should exist.
16 – Ground : Continuity should not exist.
PKIA2864E
16 – Ground : Refer to AV- 1 2 3 , "Terminals
and Reference Value for Display
Control Unit" .
PKIA2866E
Terminals
Condition Voltage (+)
(–)
ConnectorTerminal
(Wire color)
B207 25 (R) GroundLighting switch is ON Approx. 12V
Lighting switch is OFF Approx. 0V
SKIB0315E

AV-152
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
Illumination Signal Check for Display Control Unit AKS00BNE
1. CHECK ILLUMINATION SIGNAL
1. Check voltage between display control unit harness connector
terminals and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Ignition Signal Check for NAVI Control UnitAKS00BNF
1. CHECK IGNITION SIGNAL
1. Turn ignition switch ON.
2. Check voltage between NAVI control unit harness connector
B207 terminal 26 (G) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Ignition Signal Check for Display Control UnitAKS00BNG
1. CHECK IGNITION SIGNAL
1. Turn ignition switch ON.
2. Check voltage between display control unit harness connector
M75 terminal 12 (G/R) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Reverse Signal Check for NAVI Control UnitAKS00BNH
1. CHECK REVERSE LAMP
1. Turn ignition switch ON.
2. Selector lever into R-position.
Does
“R” in the shift position indicator come on?
YES >> GO TO 2.
NO >> Check back-up lamp system. Refer to LT- 1 2 5 , "
BACK-UP LAMP" .
Terminals
Condition Voltage (+)
(–)
ConnectorTe r m i n a l
(Wire color)
M75 14 (R/L) GroundLighting switch is ON Approx. 12V
Lighting switch IS OFF Approx. 0V
SKIB0445E
26 – Ground : Battery voltage
SKIA8939E
12 – Ground : Battery voltage
SKIA8940E

NAVIGATION SYSTEM
AV-153
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Revision: 2004 November 2004 FX35/FX45
2. CHECK REVERSE SIGNAL
1. With the selector lever in R-position, check voltage between
NAVI control unit and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Reverse Signal Check for Display Control UnitAKS00BNI
1. CHECK REVERSE LAMP
1. Turn ignition switch ON.
2. Selector lever into R-position.
Does
“R” in the shift position indicator come on?
YES >> GO TO 2.
NO >> Check back-up lamp system. Refer to LT- 1 2 5 , "
BACK-UP LAMP" .
2. CHECK REVERSE SIGNAL
1. With the selector lever in R-position, check voltage between dis-
play control unit and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or cnnector.
When Malfunctioning Connection Between Display Control Unit and NAVI Con-
trol Unit
AKS00BNJ
1. CHECK NAVI CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
1. Check NAVI control unit power supply and ground circuit. Refer to AV- 1 4 5 , "
Power Supply and Ground
Circuit Check for NAVI Control Unit" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
Terminals
Condition Voltage (+)
(–)
ConnectorTe r m i n a l
(Wire color)
B207 27 (OR) GroundSelect
leverR-position Approx. 12V
Except R-
positionApprox. 0V
SKIA9498E
Terminals
Condition Voltage (+)
(–)
ConnectorTe r m i n a l
(Wire color)
M75 6 (OR) GroundSelect
leverR-position Approx. 12V
Except R-
positionApprox. 0V
SKIA8942E

AV-154
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and display control unit connector.
3. Check continuity between NAVI control unit harness connector
B207 terminals 44 (L), 45(P) and display control unit harness
connector M76 terminals 32 (BR), 34 (Y).
4. Check continuity between NAVI control unit harness connector
B207 terminals 44 (L), 45 (P) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. SELF-DIAGNOSIS OF DCU
1. Replace NAVI control unit.
2. Connect NAVI control unit connector and display control unit connector.
3. Turn ignition switch ON.
4. Start self-diagnosis of DCU, and check the self-diagnosis result.
OK or NG
OK >> INSPECTION END.
NG >> Replace display control unit.
When Malfunctioning Connection Between Display Control Unit and Audio UnitAKS00BNK
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check audio unit power supply and ground circuit. Refer to AV- 3 9 , "
Power Supply Circuit Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning parts.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and display control unit connector.
3. Check continuity between display control unit harness connector
M76 terminals 40 (LG), 42 (B/Y) and audio unit harness connec-
tor M60 terminals 23 (LG), 21 (B/Y).
4. Check continuity between display control unit harness connector
M76 terminals 40 (LG), 42 (B/Y) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.44 – 32 : Continuity should exist.
45 – 34 : Continuity should exist.
44, 45 – Ground : Continuity should not exist.
PKIA2873E
40 – 23 : Continuity should exist.
42 – 21 : Continuity should exist.
40, 42 – Ground : Continuity shold not exist.
PKIA2875E

NAVIGATION SYSTEM
AV-155
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Revision: 2004 November 2004 FX35/FX45
3. 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 4.
NG >> Replace audio unit.
4. CHECK DISPLAY CONTORL UNIT
1. Turn ignition switch OFF.
2. Disconnect audio unit connector, and connect display control unit connector.
3. Turn ignition switch ON.
4. Check voltage between display control unit harness connector
M76 terminal 42 (B/Y) and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace display control unit.
5. CHECK COMMUNICATION SIGNAL (DCU–ADU)
1. Turn ignition switch OFF.
2. Connect audio unit connector.
3. Turn ignition switch ON.
4. Check signal between display control unit harness connector
M76 terminal 40 (LG) and ground with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> GO TO 6.
NG >> Replace display control unit.23 – Ground : Approx. 4 V
SKIA9484E
42 – ground : Approx. 4 V
PKIA2877E
40 – Ground : Refer to AV- 1 2 3 , "Te r m i n a l s
and Reference Value for Dis-
play Control Unit" .
PKIA2878E

AV-156
NAVIGATION SYSTEM
Revision: 2004 November 2004 FX35/FX45
6. CHECK COMMUNICATION SIGNAL (AUD–DCU)
1. Check signal between display control unit harness connector
M76 terminal 42 (B/Y) and ground with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> Replace display control unit.
NG >> Replace audio unit.
When Malfunctioning Connection Between Display Control Unit and Display AKS00BNL
1. CHECK HARNESS
1. Disconnect display connector and display control unit connector.
2. Check continuity between display control unit harness connector
M76 terminals 36 (PU), 38 (LG) and Display harness connector
M63 terminals 11 (PU), 22 (LG).
3. Check continuity between display control unit harness connector
M76 terminals 36 (PU), 38 (LG) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK DISPLAY
1. Connect display connector.
2. Turn ignition switch ON.
3. Check voltage between display control unit harness connector
M76 terminal 36 (PU) and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace display.42 – Ground : Refer to AV- 1 2 3 , "
Terminals
and Reference Value for Dis-
play Control Unit" .
PKIA2879E
36 – 11 : Continuity shold exist.
38 – 22 : Continuity shold exist.
36, 38 – Ground : Continuity shold not exist.
PKIA2880E
36 – Ground : Approx. 4V
PKIA2881E

NAVIGATION SYSTEM
AV-157
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Revision: 2004 November 2004 FX35/FX45
3. CHECK DISPLAY CONTROL UNIT
1. Turn ignition switch OFF.
2. Disconnect display connector, and connect display control uint connector.
3. Check voltage between display control unit harness connector
M76 terminal 38 (LG) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace display control unit.
4. CHECK COMMUNICATION SIGNAL (DCU–DSP)
1. Turn ignition switch OFF.
2. Connect display connector.
3. Turn ignition switch ON.
4. Check signal between display control unit harness connector
M76 terminal 36 (PU) and ground with CONSULT-ll or oscillo-
scope.
OK or NG
OK >> GO TO 5.
NG >> Replace display control unit.
5. CHECK COMMUNICATION SIGNAL (DSP–DCU)
Check signal between display control unit harness connector M76
terminal 38 (LG) and ground with CONSULT-ll or oscilloscope.
OK or NG
OK >> Replace display control unit.
NG >> Replace display.38 – Ground : Approx. 4V
PKIA2882E
36 – Ground : Refer to AV- 1 2 3 , "Te r m i n a l s
and Reference Value for Dis-
play Control Unit" .
PKIA2883E
38 – Ground : Refer to AV- 1 2 3 , "Te r m i n a l s
and Reference Value for Dis-
play Control Unit" .
PKIA2884E