AUX INFINITI M35 2006 Factory Service Manual

AT-140
DTC P1721 VEHICLE SPEED SENSOR MTR
Revision: 2006 January2006 M35/M45
DTC P1721 VEHICLE SPEED SENSOR MTRPFP:24814
DescriptionNCS001MN
The vehicle speed sensorꞏMTR signal is transmitted from combination meter to TCM by CAN communication
line. The signal functions as an auxiliary device to the revolution sensor when it is malfunctioning. The TCM
will then use the vehicle speed sensorꞏMTR signal.
CONSULT-II Reference ValueNCS001MO
On Board Diagnosis LogicNCS001MP
This is not an OBD-II self-diagnostic item.
Diagnostic trouble code “P1721 VHE SPD SE/CIRꞏMTR” with CONSULT-II is detected when TCM does
not receive the proper vehicle speed sensor MTR signal (input by CAN communication) from unified
meter and A/C amp.
Possible CauseNCS001MQ
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation ProcedureNCS001MR
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POSI: 1/8 or less
VHCL/S SEꞏMTR: 30 km/h (17 MPH) or more
5. If DTC is detected, go to AT-141, "
Diagnostic Procedure" .
Item name Condition Display value
VHCL/S SEꞏMTR During driving Approximately matches the speedometer reading.
BCIA0030E

ATC-2Revision: 2006 January2006 M35/M45 AUTO SWITCH ................................................... 34
DEFROSTER (DEF) SWITCH ............................. 34
UPPER VENT SWITCH ...................................... 34
A/C SWITCH ....................................................... 35
FAN SWITCHES .................................................. 35
OFF SWITCH ...................................................... 35
REAR WINDOW DEFOGGER SWITCH ............. 35
INTAKE SWITCH ................................................. 35
DUAL SWITCH .................................................... 35
Control Operation (Rear Control Switch) ................ 35
AUTO SWITCH ................................................... 35
FAN SWITCH ...................................................... 35
REAR TEMPERATURE CONTROL SWITCH ..... 35
Fail-Safe Function .................................................. 36
Discharge Air Flow ................................................. 37
System Description ................................................. 38
SWITCHES AND THEIR CONTROL FUNCTION ... 38
CAN Communication System Description .............. 39
TROUBLE DIAGNOSIS ............................................ 40
CONSULT-II Function (ECM) .................................. 40
CONSULT-II BASIC OPERATION ....................... 40
DATA MONITOR .................................................. 40
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 40
WORK FLOW ...................................................... 40
SYMPTOM TABLE .............................................. 41
Component Parts and Harness Connector Location ... 42
ENGINE COMPARTMENT .................................. 42
PASSENGER COMPARTMENT .......................... 43
Schematic ............................................................... 44
Wiring Diagram —A/C— ......................................... 46
Auto Amp. Terminals and Reference Value ............ 53
PIN CONNECTOR TERMINAL LAYOUT ............ 53
TERMINALS AND REFERENCE VALUE FOR
UNIFIED METER AND A/C AMP. ........................ 53
Self-diagnosis Function .......................................... 55
DESCRIPTION .................................................... 55
FUNCTION CONFIRMATION PROCEDURE ...... 56
AUXILIARY MECHANISM: TEMPERATURE
SETTING TRIMMER ........................................... 62
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER ........................................... 63
AUXILIARY MECHANISM: INLET PORT MEM-
ORY FUNCTION ................................................. 63
Operational Check .................................................. 64
CHECKING MEMORY FUNCTION ..................... 64
CHECKING BLOWER ......................................... 64
CHECKING DISCHARGE AIR (MODE SWITCH
AND DEF SWITCH) ............................................ 64
CHECKING DISCHARGE AIR (UPPER VENT
SWITCH) ............................................................. 65
CHECKING INTAKE AIR ..................................... 65
CHECKING TEMPERATURE DECREASE ......... 65
CHECKING TEMPERATURE INCREASE .......... 65
CHECKING A/C SWITCH ................................... 65
CHECKING AUTO MODE ................................... 65
Power Supply and Ground Circuit for Auto Amp. ... 66
INSPECTION FLOW ........................................... 66
COMPONENT DESCRIPTION ............................ 67DIAGNOSIS PROCEDURE FOR A/C SYSTEM ... 67
Rear Control Switch Circuit ..................................... 69
DIAGNOSIS PROCEDURE FOR REAR CON-
TROL SWITCH .................................................... 69
LAN System Circuit ................................................. 70
DIAGNOSIS PROCEDURE FOR LAN CIRCUIT ... 70
Mode Door Motor Circuit ......................................... 75
INSPECTION FLOW ............................................ 76
SYSTEM DESCRIPTION ..................................... 78
COMPONENT DESCRIPTION ............................ 79
DIAGNOSIS PROCEDURE FOR MODE DOOR
MOTOR ................................................................ 79
Upper Ventilator Door Motor Circuit ........................ 80
INSPECTION FLOW ............................................ 80
SYSTEM DESCRIPTION ..................................... 81
COMPONENT DESCRIPTION ............................ 82
DIAGNOSIS PROCEDURE FOR UPPER VEN-
TILATOR DOOR MOTOR .................................... 82
Air Mix Door Motor Circuit ....................................... 83
INSPECTION FLOW ............................................ 83
SYSTEM DESCRIPTION ..................................... 84
COMPONENT DESCRIPTION ............................ 85
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR
MOTOR ................................................................ 85
Air Mix Door Motor PBR Circuit .............................. 85
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR
MOTOR PBR ....................................................... 85
Intake Door Motor Circuit ........................................ 86
INSPECTION FLOW ............................................ 86
SYSTEM DESCRIPTION ..................................... 87
COMPONENT DESCRIPTION ............................ 88
DIAGNOSIS PROCEDURE FOR INTAKE DOOR
MOTOR ................................................................ 88
Blower Motor Circuit ................................................ 89
INSPECTION FLOW ............................................ 89
SYSTEM DESCRIPTION ..................................... 90
COMPONENT DESCRIPTION ............................ 91
DIAGNOSIS PROCEDURE FOR BLOWER
MOTOR ................................................................ 91
COMPONENT INSPECTION ............................... 93
Magnet Clutch Circuit .............................................. 94
INSPECTION FLOW ............................................ 94
SYSTEM DESCRIPTION ..................................... 95
DIAGNOSIS PROCEDURE FOR MAGNET
CLUTCH .............................................................. 95
COMPONENT INSPECTION ............................... 98
Insufficient Cooling .................................................. 99
INSPECTION FLOW ............................................ 99
PERFORMANCE TEST DIAGNOSIS ................101
PERFORMANCE CHART ..................................103
TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
SURE .................................................................105
DIAGNOSIS PROCEDURE FOR INSUFFI-
CIENT COOLING ...............................................107
Insufficient Heating ...............................................109
INSPECTION FLOW ..........................................109
Noise .....................................................................110
INSPECTION FLOW ..........................................110
Self-Diagnosis ....................................................... 111

TROUBLE DIAGNOSIS
ATC-55
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Self-diagnosis FunctionNJS000GJ
DESCRIPTION
The self-diagnosis system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to appli-
cable sections (items) for details. Shifting from usual control to the self-diagnosis system is accomplished by
starting the engine (turning the ignition switch ON) and pressing OFF switch for at least 5 seconds. The OFF
switch must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system
will be canceled by either pressing AUTO switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished by means of pressing temperature control switch (driver side), as required.
Shifting from STEP-5 to AUXILIARY MECHANISM is accomplished by means of pressing (fan) UP switch.
RJIA4034E

ATC-58
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Checks must be made visually, by listening the sound, or by touching air outlets with hand, etc. for improper
operation.
*1: FOOT position during automatic control. Refer to AT C - 6 3 , "
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER" .
OK or NG
OK >> GO TO 8.
NG >>
Air outlet does not change.
Go to Mode Door Motor Circuit. Refer to AT C - 7 5 , "
Mode Door Motor Circuit" .
Upper ventilator outlet does not change.
Go to Upper Ventilator Door Motor Circuit. Refer to AT C - 8 0 , "
Upper Ventilator Door Motor Cir-
cuit" .
Intake door does not change.
Go to Intake Door Motor Circuit. Refer to AT C - 8 6 , "
Intake Door Motor Circuit" .
Blower motor operation is malfunctioning.
Go to Blower Motor Circuit. Refer to AT C - 8 9 , "
Blower Motor Circuit" .
Magnet clutch does not engage.
Go to Magnet Clutch Circuit. Refer to ATC-94, "
Magnet Clutch Circuit" .
Discharge air temperature does not change.
Go to Air Mix Door Motor Circuit. Refer to AT C - 8 3 , "
Air Mix Door Motor Circuit" .
8. STEP-5: TEMPERATURE OF EACH SENSOR IS CHECKED
1. Press temperature control (UP) switch (driver side).
2. Code No. 51 appears on the display.
>> GO TO 9.
9. CHECK AMBIENT SENSOR
Press (DEF) switch one time. Temperature detected by ambient
sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 10.
NG >> Go to Ambient Sensor Circuit. Refer to AT C - 11 3 , "
Ambi-
ent Sensor Circuit" .
10. CHECK IN-VEHICLE SENSOR
Press (DEF) switch for the second time. Temperature detected
by in-vehicle sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 11.
NG >> Go to In-vehicle Sensor Circuit. Refer to AT C - 11 6 , "
In-
Vehicle Sensor Circuit" .
RJIA0223E
RJIA1271E

ATC-62
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER
The trimmer compensates for differences in range of 3C (6F) between temperature setting (displayed dig-
itally) and temperature felt by customer.
Operating procedures for this trimmer are as follows:
1. Begin self-diagnosis STEP-5 mode. Refer to ATC-55, "
Self-diagnosis Function" .
2. Press (fan) UP switch to set system in auxiliary mode.
3. Display shows 61 in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.
4. Press temperature control switch (driver side) as desired. Temperature will change at a rate of 0.5
C
(1.0
F) each time a switch is pressed.
CAUTION:
A decimal point is not indicated when the display shows “
C”.
When battery cable is disconnected or battery voltage is 10 V or less, trimmer operation is canceled. Temper-
ature set becomes that of initial condition, i.e. 0
C (0F).
SJIA1693E

TROUBLE DIAGNOSIS
ATC-63
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
AUXILIARY MECHANISM: FOOT POSITION SETTING TRIMMER
Wind distribution ratio in FOOT mode can be set.
Operating procedures for this trimmer are as follows:
1. Begin self-diagnosis STEP-5 mode. Refer to AT C - 5 5 , "
Self-diagnosis Function" .
2. Press (fan) UP switch to set system in auxiliary mode.
3. Display shows 61 in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.
4. Press the mode switch as desired.
When battery cable is disconnected or battery voltage below 10 V, trimmer operation is canceled. Wind distri-
bution ratio set becomes that of initial condition.
AUXILIARY MECHANISM: INLET PORT MEMORY FUNCTION
When ignition switch is turned from OFF to ON, inlet port memory function at manual mode can be set.
Operating procedures for this trimmer are as follows:
1. Begin self-diagnosis STEP-5 mode. Refer to AT C - 5 5 , "
Self-diagnosis Function" .
2. Press (fan) UP switch to set system in auxiliary mode.
3. Press the intake switch as desired.
When battery cable is disconnected or battery voltage below 10 V, memory function is canceled. Memory func-
tion set becomes that of initial condition.
RJIA4038E
LED status o f
FRE positionLED status of
REC positionSetting status
Setting changeover
method
FRE REC
OFF OFF AUTO control AUTO control
Intake SW: ON OFF ON AUTO control (Initial setting)Manual REC status is memorized.
(Initial setting)
ON OFF Manual FRE status is memorized. AUTO control
ON ON Manual FRE status is memorized. Manual REC status is memorized.

ATC-100
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
*1ATC-56, "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 2 to 6.*2ATC-83, "
Air Mix Door Motor Circuit"*3ATC-103, "Test Reading
(VQ35DE)" or ATC-104, "Test
Reading (VK45DE)"
*4ATC-62, "AUXILIARY MECHA-
NISM: TEMPERATURE SETTING
TRIMMER"
*5ATC-56, "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 13.*6ATC-70, "
LAN System Circuit"
*7ATC-89, "Blower Motor Circuit"*8ATC-94, "Magnet Clutch Circuit"*9ATC-101, "PERFORMANCE TEST
DIAGNOSIS"
*10ATC-64, "Operational Check"*11AT C - 7 , "CONTAMINATED REFRIG-
ERANT"
*12EM-15, "Checking Drive Belts"
(VQ35DE) or EM-174, "
Checking
Drive Belts" (VK45DE)
*13EC-512, "
SYSTEM DESCRIPTION"
(VQ35DE) or EC-1239, "
SYSTEM
DESCRIPTION" (VK45DE)

AV-3
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2006 January2006 M35/M45 Front Display Unit (Base System) ........................136
REMOVAL ........................................................
.136
INSTALLATION .................................................136
Front Display Unit (BOSE System) ......................137
REMOVAL ........................................................
.137
INSTALLATION .................................................137
Multifunction Switch .............................................137
REMOVAL ........................................................
.137
INSTALLATION .................................................137
Preset Switch .......................................................137
REMOVAL ........................................................
.137
INSTALLATION .................................................138
Steering Switch ....................................................138
REMOVAL ........................................................
.138
INSTALLATION .................................................138
DVD Player ..........................................................138
REMOVAL ........................................................
.138
INSTALLATION .................................................139
Auxiliary Input Jacks ............................................140
REMOVAL ........................................................
.140
INSTALLATION .................................................140
Microphone ..........................................................140
REMOVAL ........................................................
.140
INSTALLATION .................................................140
GPS Antenna .......................................................140
REMOVAL ........................................................
.140
INSTALLATION .................................................141
Camera Control Unit ............................................142
REMOVAL ........................................................
.142
INSTALLATION .................................................142
Rear View Camera ...............................................142
REMOVAL ........................................................
.142
INSTALLATION .................................................142
Steering Angle Sensor .........................................142
REMOVAL ........................................................
.142
INSTALLATION .................................................143
WITH MOBILE ENTERTAINMENT SYSTEM
PRECAUTION ........................................................144
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ..............................................................144
Precautions for Trouble Diagnosis .......................144
AV COMMUNICATION SYSTEM ......................144
Precautions for Harness Repair ...........................144
AV COMMUNICATION SYSTEM ......................144
PREPARATION .......................................................145
Commercial Service Tools ....................................145
SYSTEM DESCRIPTION ........................................146
System Functions .................................................146
AUDIO ...............................................................146
VEHICLE INFORMATION SYSTEM .................146
NAVIGATION SYSTEM .....................................146
MOBILE ENTERTAINMENT SYSTEM ..............148
HANDS-FREE PHONE .....................................148
REAR VIEW MONITOR ....................................148Component Description ........................................149
AUDIO UNIT ..................................................... .149
BOSE AMP ........................................................149
SATELLITE TUNER ..........................................150
AV CONTROL UNIT (WITHOUT NAVI) .............150
NAVI CONTROL UNIT (WITH NAVI) .................150
FRONT DISPLAY UNIT .....................................150
REAR DISPLAY UNIT .......................................151
VIDEO DISTRIBUTOR ......................................151
DVD PLAYER ....................................................151
CAMERA CONTROL UNIT ...............................151
CAN Communication System Description ............152
CAN Communication Unit .....................................152
Schematic — BOSE Audio 2ch System — ...........153
W i r i n g D i a g r a m — A V — / B O S E A u d i o 2 c h S y s t e m .156
Schematic — BOSE Surround Audio 5.1ch System
— ..........................................................................175
Wiring Diagram — AV — / BOSE Surround Audio
5.1ch System ........................................................178
Component Parts Location ...................................202
Location of Antenna ..............................................203
TERMINALS AND REFERENCE VALUE FOR CON-
TROL UNIT .............................................................204
Audio Unit .............................................................204
BOSE Amp ...........................................................206
Satellite Radio Tuner ............................................210
AV (NAVI) Control Unit .........................................211
Video Distributor ...................................................214
Front Display Unit ................................................
.219
Rear Display Unit ..................................................221
DVD Player ...........................................................223
Headphone Amp ...................................................226
Camera Control Unit ............................................ .227
DIAGNOSIS SYSTEM .............................................230
Multifunction Switch Self-Diagnosis Function .......230
SELF-DIAGNOSIS MODE ................................230
FINISHING SELF-DIAGNOSIS MODE .............230
Multi AV System Diagnosis Functions ..................230
On Board Diagnosis .............................................230
DESCRIPTION ..................................................230
STARTING PROCEDURE .................................231
Self Diagnosis .......................................................232
DIAGNOSIS RESULTS .....................................233
Confirmation/Adjustment Mode ............................235
DISPLAY DIAGNOSIS .......................................235
VEHICLE SIGNALS ..........................................236
SPEAKER TEST ...............................................236
CLIMATE CONTROL .........................................236
NAVIGATION .....................................................237
ERROR HISTORY .............................................237
VEHICLE CAN DIAGNOSIS .............................241
AV COMM DIAGNOSIS .....................................241
HANDSFREE PHONE ......................................242
REAR DISPLAY .................................................242
CAMERA CONT. ...............................................243
BLUETOOTH .....................................................244
DELETE UNIT CONNECTION LOG .................244

AV-5
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2006 January2006 M35/M45 REMOVAL ........................................................
.288
INSTALLATION .................................................289
Antenna Amp .......................................................289
REMOVAL ........................................................
.289
INSTALLATION .................................................289
Satellite Radio Antenna ........................................289
REMOVAL ........................................................
.289
INSTALLATION .................................................290
Splitter ..................................................................290
REMOVAL ........................................................
.290
INSTALLATION .................................................290
AV (NAVI) Control Unit .........................................290
REMOVAL ........................................................
.290
INSTALLATION .................................................291
Front Display Unit .................................................291
REMOVAL ........................................................
.291
INSTALLATION .................................................291
Rear Display Unit .................................................292
REMOVAL ........................................................
.292
INSTALLATION .................................................292
Multifunction Switch .............................................292
REMOVAL ........................................................
.292
INSTALLATION .................................................292
Preset Switch .......................................................292
REMOVAL ........................................................
.292
INSTALLATION .................................................293
Steering Switch ....................................................293
REMOVAL ........................................................
.293
INSTALLATION .................................................293
Rear Control Switch ............................................ .294REMOVAL ........................................................
.294
INSTALLATION .................................................294
Video Distributor ...................................................294
REMOVAL ........................................................
.294
INSTALLATION .................................................295
DVD Player ...........................................................295
REMOVAL ........................................................
.295
INSTALLATION .................................................295
Auxiliary Input Jacks .............................................296
REMOVAL ........................................................
.296
INSTALLATION .................................................296
Headphone Amp ...................................................296
REMOVAL ........................................................
.296
INSTALLATION .................................................296
Microphone ...........................................................296
REMOVAL ........................................................
.296
INSTALLATION .................................................297
GPS Antenna ........................................................297
REMOVAL ........................................................
.297
INSTALLATION .................................................297
Camera Control Unit ............................................ .298
REMOVAL ........................................................
.298
INSTALLATION .................................................298
Rear View Camera ...............................................298
REMOVAL ........................................................
.298
INSTALLATION .................................................298
Steering Angle Sensor ..........................................299
REMOVAL ........................................................
.299
INSTALLATION .................................................299

SYSTEM DESCRIPTION
AV-11
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2006 January2006 M35/M45
Component Description NKS0048A
AUDIO UNIT
Base System
It receives the TEL voice signal and voice guidance signal from
AV (NAVI) control unit and output them to the front speaker.
When the TEL voice and voice guidance is output, it controls the
volume of each speaker.
BOSE 2ch System
It receives the TEL voice signal from AV (NAVI) control unit and out-
put it to the BOSE amp.
BOSE Surround 5.1ch System
It receives the TEL voice signal from AV (NAVI) control unit and
output it to the BOSE amp.
DVD player receives the received AUX sound and the downmix
sound of DVD player, and then sends them to the BOSE amp.
BOSE AMP
BOSE 2ch System
It amplifies the sound signal from the audio unit and output it to
each speaker.
It receives the voice guidance signal from AV (NAVI) control unit
and output it to the front speaker.
It controls sound volume of each speaker when outputting TEL
voice and voice guidance.
It subjects to AudioPilot® processing when receiving sound sig-
nal from microphone for AudioPilot
® .
SKIB3886E
SKIB3886E
SKIB3886E
SKIB3887E