ATC-84
TROUBLE DIAGNOSIS
Revision: 2006 December 2006 FX35/FX45
1. CHECK AMBIENT SENSOR AND INTAKE SENSOR CIRCUIT
Check ambient sensor and intake sensor. Refer to AT C - 5 3 , "
FUNCTION CONFIRMATION PROCEDURE" ,
see No. 9 and 11.
OK or NG
OK >> GO TO 2.
NG >>
Malfunctioning ambient sensor: Refer to ATC-103, "Ambient Sensor Circuit" .
Malfunctioning intake sensor: Refer to AT C - 11 2 , "Intake Sensor Circuit" .
2. PERFORM AUTO ACTIVE TEST
Refer to PG-21, "
Auto Active Test" .
Does the magnet clutch operate?
YES >>WITH CONSULT-II: GO TO 5
WITHOUT CONSULT-II: GO TO 6.
NO >> Check 10A fuse (No. 79, located in IPDM E/R), and GO TO 3.
3. CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and compressor connector.
3. Check continuity between IPDM E/R harness connector E8 ter- minal 33 and compressor harness connector F2 terminal 1.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK >> 1. Replace IPDM E/R.
2. Go to self-diagnosis procedure AT C - 5 3 , "
FUNCTION
CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-4. Confirm that magnet clutch opera-
tion normal.
NG >> 1. Replace magnet clutch. Refer to ATC-142, "
Removal
and Installation of Compressor Clutch" .
2. Go to self-diagnosis procedure AT C - 5 3 , "
FUNCTION
CONFIRMATION PROCEDURE" and perform self-diagnosis STEP-4. Confirm that magnet
clutch operation normal.
33 – 1 : Continuity should exist.
RJIA2004E
RJIA2005E
TROUBLE DIAGNOSIS ATC-97
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AT C
Revision: 2006 December 2006 FX35/FX45
Low-pressure Side Sometimes Becomes Negative
Low-pressure Side Becomes Negative
DIAGNOSIS PROCEDURE FOR INSUFFICIENT COOLING
SYMPTOM: Insufficient cooling
1. CHECK POWER SUPPLY FOR ECV (ELECTRONIC CONTROL VALVE)
1. Disconnect compressor (ECV) connector.
2. Turn ignition switch ON.
3. Check voltage between compressor (ECV) harness connector F6 terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 10A fuse [No. 12, located in the fuse block (J/B)]. Refer to PG-81, "
FUSE
BLOCK - JUNCTION BOX (J/B)" .
If fuse is OK, check harness for open circuit. Repair or replace if necessary.
If fuse is NG, check harness for short circuit and replace fuse.
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side sometimes
becomes negative.
Air conditioning system
does not function and does
not cyclically cool the com-
partment air.
The system constantly func-
tions for a certain period of
time after compressor is
stopped and restarted. Refrigerant does not dis-
charge cyclically.
↓
Moisture is frozen at expan-
sion valve outlet and inlet.
↓
Water is mixed with refriger-
ant.
Drain water from refrigerant
or replace refrigerant.
Replace liquid tank.
AC354A
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side becomes nega-
tive.
Liquid tank or front/rear side of
expansion valve’s pipe is
frosted or wet with dew. High-pressure side is closed
and refrigerant does not flow.
↓
Expansion valve or liquid tank
is frosted. Leave the system at rest until
no frost is present. Start it
again to check whether or not
the malfunction is caused by
water or foreign particles.
If water is the cause, initially
cooling is okay. Then the
water freezes causing a
blockage. Drain water from
refrigerant or replace refrig-
erant.
If due to foreign particles,
remove expansion valve
and remove the particles
with dry and compressed air
(not shop air).
If either of the above meth-
ods cannot correct the mal-
function, replace expansion
valve.
Replace liquid tank.
Check lubricant for contami-
nation.
AC362A
2 – ground : Battery voltage
RJIA2294E
AV-6
AUDIO
Revision: 2006 December 2006 FX35/FX45
AUDIOPFP:28111
System DescriptionNKS003AI
AUDIO SYSTEM
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
through 15A fuse (No. 32, located in the fuse and fusible link block)
to audio unit terminal 6
to A/C and AV switch terminal 1
to display control unit terminal 1
to woofer terminal 1
to satellite radio tuner terminal 12 (With satellite radio) and
to option connector–2 for satellite radio tuner terminal 12 (Without satellite radio),
through 20A fuse [No.17, located in the fuse block (J/B)]
to BOSE speaker amp. terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No. 6, located in the fuse block (J/B)]
to audio unit terminal 10
to A/C and AV switch terminal 2
to display control unit terminal 10
to satellite radio tuner terminal 16 (With satellite radio) and
to option connector–2 for satellite radio tuner terminal 11 (Without satellite radio).
Ground is supplied through the case of the audio unit.
Ground is also supplied
to BOSE speaker amp. terminal 17
to woofer terminal 2
to satellite radio tuner terminal 15 (With satellite radio) and
to option connector–2 for satellite radio receiver terminal 10 (Without satellite radio)
through body ground B203 and B210,
to A/C and AV switch terminal 5
to display control unit terminals 3,13 and
to display terminal 1
through body ground M35, M45 and M85.
Audio unit, A/C and audio controller are connected by FPC (Flexible Print Circuit).
A/C and audio controller integrates A/C switches and audio switches.
When A/C and audio controller is pressed to audio switch, it sends audio signal to audio unit. Then audio sig-
nals are supplied
through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16
to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29, and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied
through BOSE speaker amp. terminals 2, 3, 4, 9,10,11,12, 13, 14, 15, 16, 18, 19 and 20
to terminals 1 and 2 of front door speaker LH and RH
to terminals 1 and 2 of rear door speaker LH and RH
to terminals 1 and 2 of tweeter LH and RH
to terminals 1 and 2 of instrument speaker LH, RH, and CENTER, and
to terminals 7 and 8 of woofer.
When one of audio steering wheel switch is pressed to ON (With telephone system), mode ON (Without
telephone system), seek up, or volume up, resistance in steering switch circuit changes depending on which
button is pressed.
AUDIO AV-37
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AV
Revision: 2006 December 2006 FX35/FX45
Power Supply Circuit InspectionNKS003AW
1. CHECK FUSE
Make sure that the following fuses of the BOSE speaker amp., woofer, and audio unit are not blown.
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 PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Check voltage between audio unit harness connector terminals and ground.
2. Check voltage between BOSE speaker amp. harness connector terminal or woofer harness connector terminal and ground.
OK or NG
OK >>INSPECTION END (Audio unit is OK.)
GO TO 3. (BOSE speaker amp. and woofer)
NG >> Repair harness or connector between each unit and fuse.
Unit Terminal Signal name Fuse No.
Audio unit 6 Battery power supply 32
10 ACC power supply 6
BOSE speaker amp. 1 Battery power supply 17
Woofer 1 Battery power supply 32
Terminals Ignition
switch Voltag e
(+)
(–)
Connector Terminal
M58 6 Ground OFF Battery voltage
10 Ground ACC Battery voltage
PKIA3814E
Terminals Ignition
switch Voltag e
(+)
(–)
Connector Terminal
B212 1 Ground OFF Battery voltage
B223 1 Ground OFF Battery voltage
SKIA8931E
AV-48
ANTENNA
Revision: 2006 December 2006 FX35/FX45
ANTENNAPFP:28200
System DescriptionNKS003LP
With the ignition switch in ACC or ON, power is supplied
through 10A fuse [No. 6, located in the fuse block (J/B)]
to audio unit terminal 10.
Ground is supplied through the case of the antenna amp.
When the radio switch is turned ON, antenna signal is supplied
through audio unit terminal 5
to the antenna amp.
Then the antenna amp. is activated.
The amplified radio signals are supplied to the audio unit through the antenna amp.
INFINITI MOBILE ENTERTAINMENT SYSTEM AV-157
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AV
Revision: 2006 December 2006 FX35/FX45
INFINITI MOBILE ENTERTAINMENT SYSTEMPFP:28184
System DescriptionNKS003E2
Refer to Owner's Manual for mobile entertainment system operating instructions.
Power is supplied at all times
through 15A fuse (No. 32, located in the fuse and fusible link block)
to DVD player terminal 16
through DVD player terminals 31 and 32
to DVD display terminals 15 and 16.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No. 6, located in the fuse block (J/B)]
to DVD player terminal 15
through DVD player terminal 21
to DVD display terminal 5.
Ground is supplied
to DVD player terminal 22
through body ground B15 and B45
to DVD player terminals 19, 27
through DVD display terminals 6, 10 and 12.
When DVD player power switch is ON, power is supplied
through DVD player terminal 9
to audio unit terminal 38 and
through audio unit terminal 40
to DVD player terminal 11.
When DVD player power switch is ON, DVD sound signals are supplied
through DVD player terminals 17, 18, and 20
to DVD display terminals 1, 2 and 4.
DVD sound can be heard by the head phone.
When rear AV switch is ON, audio signals are supplied
through DVD player terminals 1, 2, 3, and 4
to audio unit terminals 37, 39, 43, and 42.
DVD sound can be heard from the speaker.
When DVD player power switch is ON, video signals are supplied
through DVD player terminals 23 and 24
to DVD display terminals 7 and 8.
When remote controller is operated, operation signals are supplied
through DVD display terminal 14
to DVD player terminal 30 and
through DVD player terminal 29
to DVD display terminal 13.
AV-164
INFINITI MOBILE ENTERTAINMENT SYSTEM
Revision: 2006 December 2006 FX35/FX45
DVD Player Does Not WorkNKS003E7
1. CHECK FUSE
Check that the following fuse of the DVD player are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown be sure to eliminate case of problem before installing new fuse, refer to PG-3,
"POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between DVD player harness connector terminals
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector between DVD player and fuse.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect DVD player connector.
3. Check continuity between the following DVD player harness connector B19 terminal 22 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or harness or connector.
Unit Signal Fuse No.
DVD player Battery power supply 32
ACC power supply 6
Terminals Condition Reference value
(+)
(–)
Connector Terminal
M73 16
Ground Ignition switch OFF Battery voltage
15 Ignition switch ACC Battery voltage
SKIB0323E
22 – Ground : Continuity should exist.
SKIA5846E
BCM (BODY CONTROL MODULE) BCS-15
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Revision: 2006 December 2006 FX35/FX45
Removal and Installation of BCMNKS00344
REMOVAL
1. Remove the dash side finisher (LH). Refer to EI-37, "BODY
SIDE TRIM" .
2. Disconnect BCM connector.
3. Remove bracket mounting screws (3) to remove BCM and fuse block with bracket.
4. Raise the pawl of fuse block and remove bracket from fuse block to remove BCM.
INSTALLATION
Installation is the reverse order of removal.
NOTE:
When replacing BCM perform initialization of NATS system and registration of all NATS ignition key IDs.
SKIA4964E
SKIA4965E