ignition INFINITI QX4 2005 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2005, Model line: QX4, Model: INFINITI QX4 2005Pages: 3419, PDF Size: 80.18 MB
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ATC-142
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
5. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between in-vehicle sensor harness connector
M32 terminal 4 (LG/R) and front air control harness connector
M50 terminal 32 (LG/R).
4. Check continuity between in-vehicle sensor harness connector
M32 terminal 4 (LG/R) and ground.
OK or NG
OK >> 1. Replace front air control. Refer to ATC-147, "FRONT AIR CONTROL" .
2. Go to self-diagnosis AT C - 5 5 , "
A/C System Self-diagnosis Function" and perform self-diagno-
sis.
NG >> Repair harness or connector.
6. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR MOTOR AND FRONT AIR CON-
TROL (SELF-DIAGNOSIS CODES 44, 46 OR DTC B2578, 2579)
1. Turn ignition switch OFF.
2. Disconnect front air control connector and in-vehicle sensor con-
nector.
3. Check continuity between in-vehicle sensor harness connector
M32 terminal 2 (O/B) and 3 (BR/Y) and front air control harness
connector M50 terminal 44 (O/B) and 43 (BR/Y).
4. Check continuity between in-vehicle sensor harness connector
M32 terminal 2 (O/B) and 3 (BR/Y) and ground.
OK or NG
OK >> 1. Replace front air control. Refer to ATC-147, "FRONT AIR CONTROL" .
2. Go to ATC-55, "
A/C System Self-diagnosis Function" and perform self-diagnosis.
NG >> Repair harness or connector.4 - 32 : Continuity should exist.
4 - Ground Continuity should not exist.
LJIA0091E
2 - 44 : Continuity should exist.
3 - 43 : Continuity should exist.
2, 3 - Ground :Continuity should not exist.
LJIA0093E
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ATC-144
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
DIAGNOSTIC PROCEDURE FOR OPTICAL SENSOR
SYMPTOM: Optical sensor circuit is open or shorted. Using the
CONSULT-II, DTC B257F or B2580 is displayed. Without a CON-
SULT-II, code 50 or 51 is indicated on front air control as a result of
conducting the front air control self-diagnosis.
1. CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector and optical sensor con-
nector.
3. Check continuity between optical sensor harness connector
M402 terminal 1 (W/V) and 2 (G/O) and front air control harness
connector M50 terminal 31 (W/V) and 40 (G/O).
4. Check continuity between optical sensor harness connector
M402 terminal 1 (W/V) and 2 (G/O) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector and optical sensor connector.
3. Check continuity between optical sensor harness connector
M402 terminal 3 (P) and BCM harness connector M18 terminal
18 (P).
4. Check continuity between optical sensor harness connector
M402 terminal 3 (P) and ground.
OK or NG
OK >> Replace optical sensor. Refer to ATC-150, "OPTICAL SENSOR" .
NG >> Repair harness or connector.
WJIA0570E
1 - 31 : Continuity should exist.
2 - 40 : Continuity should exist.
1, 2 - Ground. : Continuity should not exist.
WJIA1445E
3 - 18 : Continuity should exist.
3 - Ground : Continuity should not exist.
WJIA1446E
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TROUBLE DIAGNOSIS
ATC-145
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Intake Sensor CircuitEJS003Y5
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit. It converts
temperature of air after it passes through the evaporator into a value
which is then input to the front air control.
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. Using the CON-
SULT-II, DTC B2581 or B2582 is displayed. Without a CONSULT-II,
code 56 or 57 is indicated on front air control as a result of conduct-
ing the front air control self-diagnosis.
1. CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
3. Check voltage between intake sensor harness connector M146
terminal 2 (L/B) and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between intake sensor harness connector
M146 terminal 1 (V/R) and front air control harness connector
M49 terminal 21 (V/R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
WJIA0571E
WJIA0464E
2 - Ground : Approx. 5V
WJIA1375E
1 - 21 : Continuity should exist.
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ATC-146
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
3. CHECK INTAKE SENSOR
Refer to ATC-146, "
Intake Sensor" .
OK or NG
OK >> 1. Replace front air control. Refer to ATC-147, "FRONT AIR CONTROL"
2. Go to self-diagnosisAT C - 5 5 , "A/C System Self-diagnosis Function" and perform self-diagnosis.
NG >> 1. Replace intake sensor. Refer to ATC-151, "
INTAKE SENSOR" .
2. Go to self-diagnosisAT C - 5 5 , "
A/C System Self-diagnosis Function" and perform self-diagnosis.
4. CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between intake sensor harness connector
M146 terminal 2 (L/B) and front air control harness connector
M49 terminal 9 (L/B).
4. Check continuity between intake sensor harness connector
M146 terminal 2 (L/B) and ground.
OK or NG
OK >> 1. Replace front air control. Refer to ATC-147, "FRONT AIR CONTROL" .
2. Go to self-diagnosis AT C - 5 5 , "
A/C System Self-diagnosis Function" and perform self-diagno-
sis.
NG >> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
After disconnecting intake sensor connector, measure resistance
between terminals 1 and 2 at sensor harness side, using the table
below.
If NG, replace intake sensor.2 - 9 : Continuity should exist.
2 - Ground : Continuity should not exist.
WJIA1377E
Temperature °C (°F) Resistance kΩ
−15 (5) 209.0
−10 (14) 160.0
−5 (23) 123.0
0 (32) 95.8
5 (41) 74.9
10 (50) 58.9
15 (59) 46.7
20 (68) 37.3
25 (77) 30.0
30 (86) 24.2
35 (95) 19.7
40 (104) 16.1
45 (113) 13.2
WJIA1378E
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SERVICE DATA AND SPECIFICATIONS (SDS)
ATC-193
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Service Data and Specifications (SDS)EJS003Z9
COMPRESSOR
LUBRICANT
REFRIGERANT
ENGINE IDLING SPEED
Refer to EC-77, "Idle Speed and Ignition Timing Check" .
BELT TENSION
Refer to EM-12, "Checking Drive Belts" .
MakeZEXEL VALEO CLIMATE CONTROL
ModelDKS-17D
Typ eSwash plate
Displacement
175.5 cm
3 (10.7 in3 ) / revolution
Cylinder bore × stroke 30.5 mm (1.20 in) x 24.0 mm (0.94 in)
Direction of rotation Clockwise (viewed from drive end)
Drive beltPoly V
MakeZEXEL VALEO CLIMATE CONTROL
ModelDKS-17D
NameNISSAN A/C System Lubricant Type S
Capacity
290 m (9.8 US fl oz, 10.2 Imp fl oz)
Typ eHFC 134a (R-134a)
Capacity1.08 ± 0.05 kg (2.38 ± 0.11 oz)
Page 591 of 3419
AV-2Revision: October 20052005 QX56 “VIEW” MODE ..................................................... 70
“HEADING” MODE .............................................. 71
“NEARBY DISPLAY ICONS” MODE ................... 71
“SAVE CURRENT LOCATION” MODE ............... 71
“ADJUST CURRENT LOCATION” MODE ........... 71
“AUTO RE-ROUTE” MODE ................................. 72
“AVOID AREA SETTINGS” MODE ...................... 72
“CLEAR MEMORY” MODE ................................. 72
“EDIT ADDRESS BOOK” MODE ........................ 73
“GPS INFORMATION” MODE ............................. 73
“QUICK STOP CUSTOMER SETTING” MODE ... 73
“SET AVERAGE SPEED” MODE ........................ 73
“TRACKING” MODE ............................................ 74
GUIDANCE VOLUME ......................................... 74
DISPLAY WITH PUSHED “TRIP” BUTTON ........ 74
TRIP 1 OR TRIP 2 ............................................... 75
FUEL ECONOMY ................................................ 75
MAINTENANCE .................................................. 75
ENGINE OIL OR TIRE ROTATION ..................... 75
TIRE PRESSURE ................................................ 76
WARNING INDICATIONS ................................... 76
CAN Communication System Description .............. 76
Component Parts Location ..................................... 77
Schematic ............................................................... 78
Wiring Diagram — NAVI — ..................................... 79
Schematic ............................................................... 86
Wiring Diagram — COMM — ................................. 87
Terminals and Reference Value for NAVI Control
unit .......................................................................... 90
Terminals and Reference Value for Display Control
unit .......................................................................... 92
Terminals and Reference Value for Display unit ..... 96
Terminals and Reference Value for AV Switch ....... 98
Terminals and Reference Value for BCM ................ 99
On Board Self-Diagnosis Function .......................101
DESCRIPTION ..................................................101
DIAGNOSIS ITEM .............................................101
Self-Diagnosis Mode (DCU) .................................101
OPERATION PROCEDURE ..............................101
SELF–DIAGNOSIS RESULT .............................103
Self-Diagnosis Mode (NAVI) .................................104
OPERATION PROCEDURE ..............................104
SELF–DIAGNOSIS RESULT .............................105
Confirmation/Adjustment Mode ............................107
OPERATION PROCEDURE ..............................107
DISPLAY DIAGNOSIS .......................................108
VEHICLE SIGNALS ...........................................108
NAVIGATION .....................................................109
DISPLAY DIAGNOSIS .......................................109
VEHICLE SIGNALS ...........................................110
HISTORY OF ERRORS ....................................110
DIAGNOSIS BY HISTORY OF ERRORS ..........110
NAVIGATION .....................................................112
CAN DIAG SUPPORT MONITOR ........................114
OPERATION PROCEDURE ..............................114
AV Switch Self-Diagnosis Function .......................115
Power Supply and Ground Circuit Check for NAVI
Control Unit ...........................................................116
Power Supply and Ground Circuit Check for Display Control Unit ...........................................................117
Power Supply and Ground Circuit Check for Display
Unit ........................................................................118
Power Supply and Ground Circuit Check for AV
Switch ................................................................... 120
Vehicle Speed Signal Check for NAVI Control Unit . 121
Vehicle Speed Signal Check for Display Control Unit . 122
Illumination Signal Check for NAVI Control Unit ... 123
Illumination Signal Check for Display Control Unit . 123
Ignition Signal Check for NAVI Control Unit .......... 123
Ignition Signal Check for Display Control Unit ...... 124
Reverse Signal Check for NAVI Control Unit ........ 124
Reverse Signal Check for Display Control Unit .... 124
AV Communication Line Check (Between Display
Control Unit and NAVI Control Unit) ...................... 125
Audio Communication Line Check (Between Dis-
play Control Unit and Audio Unit) .......................... 126
Display Communication Line Check (Between Dis-
play Control Unit and Display Unit) ....................... 128
AV Communication Line Check (Between Display
Control Unit and AV Switch) .................................. 130
CAN Communication Line Check ......................... 131
If NAVI Control Unit Detects That DVD-ROM Map
is Not Inserted ....................................................... 131
If NAVI Control Unit Detects That Inserted DVD-
ROM Map is Malfunctioning or If It is Impossible to
Load Data from DVD-ROM Map ........................... 131
If Connection Between NAVI Control Unit and GPS
Antenna is Malfunctioning ..................................... 132
Operating Screen for Audio and A/C is Not Dis-
played When Showing NAVI Screen ..................... 132
Color of RGB Image is Not Proper (Only NAVI
Screen Looks Bluish) ............................................ 134
Color of RGB Image is Not Proper (Only NAVI
Screen Looks Reddish) ......................................... 135
Color of RGB Image is Not Proper (Only NAVI
Screen Looks Yellowish) ....................................... 136
Color of RGB Image is Not Proper (All Screen Looks
Bluish) ................................................................... 137
Color of RGB Image is Not Proper (All Screen Looks
Reddish) ................................................................ 138
Color of RGB Image is Not Proper (All Screen Looks
Yellowish) .............................................................. 139
NAVI Screen is Rolling .......................................... 140
Guide Sound is Not Heard .................................... 142
Screen is Not Shown ............................................ 143
A/C Screen is Not Shown (NAVI Screen is Shown) . 143
FUEL ECONOMY Screen is Not Shown ............... 143
Average Fuel Economy Displayed is Not Shown (“
*** ” is Shown) ....................................................... 143
Distance to Empty Displayed is Not Shown (“ *** ”
is Shown) .............................................................. 144
Driving Distance or Average Speed Displayed is Not
Shown (“ *** ” is Shown) ....................................... 144
WARNING DOOR OPEN Screen is Not Shown ... 144
Unable to Operate All of AV Switches (Unable to
Start Self-Diagnosis) ............................................. 145
Audio Does Not Work ........................................... 145
Navigation System Does Not Activate .................. 145
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AUDIO
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System DescriptionEKS00BI8
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
through 15A fuse [No. 17, located in the fuse block (J/B)]
to subwoofer terminal 6
through 20A fuse [No. 31, located in the fuse and fusible link box]
to audio unit terminal 6
to BOSE speaker amp. terminal 1
to AV switch terminal 1 and
to display control unit terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No. 4, located in the fuse block (J/B)]
to audio unit terminal 10 and
to AV switch terminal 2 and
to display control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 12, located in the fuse block (J/B)]
to display control unit terminal 12.
Ground is supplied through the case of the audio unit.
Ground is also supplied
to subwoofer terminal 5
through body grounds B7 and B19 and
to BOSE speaker amp. terminal 17
to AV switch terminal 5 and
to display unit terminal 1 and
to display control unit terminal 3
through body grounds M57, M61 and M79.
Then audio signals 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, 9,10,11,12, 13, 14, 15, 16, 18 and 19
to terminals + and - of front door speaker LH and RH and
to terminals + and - of front tweeter LH and RH and
to terminals + and - of center speaker and
to terminals + and - of rear door speaker LH and RH and
to terminals + and - of rear door tweeter LH and RH and
to terminals 1 and 2 of subwoofer.
When one of steering wheel audio control switches is pushed, the resistance in steering switch circuit changes
depending on which button is pushed.
REAR AUDIO REMOTE CONTROL UNIT
Power is supplied
from audio unit terminal 32
to rear audio remote control unit terminal 13.
Ground is supplied
to rear audio remote control unit terminal 15
through body grounds B117 and B132.
Audio signals are supplied
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AV-8
AUDIO
Revision: October 20052005 QX56
through audio unit terminals 26, 27, 28 and 29
to terminals 1, 2, 3, and 4 of rear audio remote control unit.
SATELLITE RADIO TUNER (PRE-WIRING)
The satellite radio tuner pre-wiring allows connection of a satellite radio tuner.
Power is supplied at all times
through 20A fuse [No. 31, located in the fuse and fusible link box]
to satellite radio tuner pre-wiring terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No. 4, located in the fuse block (J/B)]
to satellite radio tuner pre-wiring terminal 36.
Ground is supplied through the case of the satellite radio tuner.
Then audio signals are supplied
through satellite radio tuner pre-wiring terminals 21, 22, 23 and 24
to audio unit terminals 41, 42, 43 and 44.
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.
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AUDIO
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Terminals and Reference Value for Audio UnitEKS00BIB
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
2 (W) 1 (B)Audio sound
signal front
LHOutput ONReceive audio
signalNo sound from front
door speaker LH or
tweeter LH.
4 (Y) 3 (BR)Audio sound
signal front
RHOutput ONReceive audio
signalNo sound from front
door speaker RH or
tweeter RH.
5 (G/W) GroundAntenna
signalOutput ON – More than 10V Poor radio reception.
6 (Y) GroundBattery
powerInput – – Battery voltageSystem does not
work properly.
7 (BR) GroundIllumination
control sig-
nalInput ONIllumination con-
trol switch is
operated by light-
ing switch in 1st
position.Changes between 0 and 12VAudio unit illumina-
tion cannot be con-
trolled.
8 (R/L) GroundIllumination
signalInput OFFLighting switch is
in 1st position.Battery voltageAudio unit illumina-
tion does not come
on when lighting
switch is in 1st posi-
tion. Lighting switch is
OFF.3V or less
9–Shield –– – 0VInterference and dis-
tortion heard from
speakers.
10 (V) Ground ACC signal Input ON – Battery voltageSystem does not
work properly.
12 (G/W) GroundAmp. ON
signalOutput ON – More than 6.5VAmp. does not work
properly.
14 (BR) 13 (B/R)Audio sound
signal rear
LHOutput ONReceive audio
signalNo sound from rear
door speaker LH or
rear door tweeter LH.
16 (L) 15 (B/W)Audio sound
signal rear
RHOutput ONReceive audio
signalNo sound from rear
door speaker RH or
rear door tweeter
RH.
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AV-20
AUDIO
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21 (V) GroundRemote
control AOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
22 (P) GroundRemote
control BOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
23 (BR/Y) GroundRemote
control COutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
24 (L) GroundRemote
control DOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
25 (LG) –Remote
control
ground–– – 0VRear audio remote
control switches do
not function.
27 (O/L) 26 (O)Audio sound
signal LHOutput ONReceive audio
signalNo sound from LH
headphone channel.
29 (W) 28 (W/L)Audio sound
signal RHOutput ONReceive audio
signalNo sound from RH
headphone channel.
30 – Shield – – – 0VInterference and dis-
tortion heard from
headphones or rear
audio remote control
unit switches not
operating properly.
31 (O) GroundRemote
control
enable sig-
nalOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate.
32 (V) GroundRemote
control
switch
power sup-
plyOutput ON Audio unit ON 12VRear audio remote
control unit does not
operate.
42 (R) 41 (G)Audio left
channel
sound sig-
nal from sat-
ellite radio
tunerInput ONReceive audio
signalNo sound from satel-
lite radio tuner left
channel. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA0177E
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