2007 INFINITI M35 Amplifier

ATC-68
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
COMPONENT DESCRIPTION
Unified Meter and A/C Amp. (Automatic Amplifier)
The unified meter and A/C amp. has a built-in microcomputer which
processes information sent from various sensors needed for air con-
ditioner operation. The air mix door motor, mode door motor, upper
ventilator door motor, intake door motor, blower motor and compres-
sor are then controlled.
When the various switches and temperature control switch are oper-
ated, data is input to the unified meter and A/C amp. from the AV
control unit / NAVI control unit using CAN communication.
Self-diagnosis functions are also built into unified meter and A/C
amp. to provide quick check of malfunctions in the auto air condi-
tioner system.
Potentio Temperature Control (PTC)
The PTC is built into the multifunction switch. It can be set at an
interval of 0.5°C (1.0°F) in the 18°C (60°F) to 32°C (90°F) tempera-
ture range by pressing temperature control switch. The set tempera-
ture is displayed.
DIAGNOSIS PROCEDURE FOR A/C SYSTEM
SYMPTOM: A/C system does not come on.
RJIA4032E
RJIA4048E
RJIA4049E

DIAGNOSIS SYSTEM
AV-89
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2007 April2007 M35/M45
DIAGNOSIS RESULT
Check the applicable display in the following table, and then repair the malfunctioning parts.
Control Unit Is Red, Gray, or Yellow
Connection Line Between Units Is Yellow (Only 1 Line)
Switch color Description Possible malfunction/Action to take
Red AV (NAVI) control unit malfunction is detectedReplace AV (NAVI) control unit
Refer to AV-131, "
AV (NAVI) Control Unit"
Ye l l o w
(With NAVI)
Malfunction is detected on DVD-ROM drive pickup
lens in NAVI control unit

There is dirt and damage on the map disc

Map disc

NAVI control unit
Gray
(With NAVI)DVD-ROM not inserted is detected Insert map disc
Applicable parts Description Probable malfunction location
Control unit to Camera Cont.Camera-connection recognition signal malfunc-
tion is detected

Camera control unit power supply and ground
circuit

Camera-connection recognition signal circuit

AV (NAVI) control unit

Camera control unit
Control unit to GPS Antenna GPS antenna connection malfunction is detected

GPS antenna feeder

GPS antenna

NAVI control unit
Control unit to DVD deck

DVD player power supply and ground circuit
malfunction is detected

Malfunction is detected on communication sig-
nal between DVD player and AV (NAVI) control
unit

DVD player power supply and ground circuit

DVD player

AV (NAVI) control unit
Control unit to Amplifier
(BOSE system)

BOSE amp power supply and ground circuit
malfunction is detected

Malfunction is detected on communication sig-
nal between BOSE amp and AV (NAVI) control
unit

BOSE amp power supply and ground circuit

BOSE amp

AV (NAVI) control unit
Control unit to Audio unit
(BOSE system)

Audio unit power supply and ground circuit mal-
function is detected

Malfunction is detected on communication cir-
cuit between audio unit and BOSE amp

Malfunction is detected on communication sig-
nal between audio unit and AV (NAVI) control
unit

Audio unit power supply and ground circuit

Communication circuit between BOSE amp
and audio unit

Audio unit

BOSE amp

AV (NAVI) control unit

AV-90
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
DIAGNOSIS SYSTEM
Revision: 2007 April2007 M35/M45
Connection Line Between Units Is Yellow (2 or More Lines)
When 2 or more connection lines between control unit (AV control unit, NAVI control) and each unit are dis-
played in yellow, these communication system lines may be open or shorted. The malfunctioning parts can be
detected by the combination of the connection lines displayed in yellow.
Applicable parts Description Probable malfunction location
Control unit to

Amplifier

Audio unitBase system

Audio unit power supply and ground circuit mal-
function is detected

Malfunction is detected on communication cir-
cuit between multifunction switch and audio unit

Malfunction is detected on communication sig-
nal between audio unit and AV (NAVI) control
unit

Audio unit power and ground circuit

Communication circuit between multifunction
switch and audio unit

Multifunction switch

Audio unit

AV (NAVI) control unit
BOSE system

Malfunction is detected on communication cir-
cuit between multifunction switch and camera
control unit

Malfunction is detected on communication cir-
cuit between camera control unit and BOSE
amp

Communication circuit between camera control
unit and BOSE amp

Multifunction switch

Camera control unit

BOSE amp

AV-94
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
DIAGNOSIS SYSTEM
Revision: 2007 April2007 M35/M45
With NAVI
Count Down Type

When the error is detected, set the counter to 40. If the system is normal when turning the ignition switch
ON, the counter decreases by 1.

The lower limit of the counter is 1. It can be reset to 0 by “Delete log” switch or CONSULT-II.
Count Up Type

When the ignition switch is turned ON if the error is detected, the counter increases 1. Even if it is normal
when the ignition switch is turned ON the next time, the counter does not decrease.

The upper limit of the counter is 50. 51 or more is displayed as 50. It can be reset to 0 by “Delete log”
switch or CONSULT-II.
Error Item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items
SKIB3687E
Display type of occur-
rence frequencyError history display item
Count down type CAN_COMM_CIRCUIT, CONTROL UNIT (CAN), AV COMM CIRCUIT, CONTROL UNIT (AV)
Count up type Other than the above
Error item Description Possible cause/Action to take
CAN_COMM_CIRCUITCAN communication malfunction is
detectedPerform the diagnosis using CONSULT-II,
and then repair the malfunctioning parts
based on diagnostic results.
Refer to AV-103, "
SELF-DIAG RESULTS"
.
CONTROL UNIT (CAN) CAN initial diagnosis malfunction is
detectedReplace AV (NAVI) control unit
Refer to AV-131, "
AV (NAVI) Control Unit"
CONTROL UNIT (AV) AV communication circuit initial diagno-
sis malfunction is detectedReplace AV (NAVI) control unit
Refer to AV-131, "AV (NAVI) Control Unit"

AV COMM CIRCUIT

Switches Connection Error

DVD Deck Connection Error

Audio Unit Connection Error

Amplifier Connection Error

Rearview Camera Connection ErrorMalfunction is detected on communi-
cation circuit between AV (NAVI) con-
trol unit and DVD player

Communication circuit between AV
(NAVI) control unit and DVD player

AV (NAVI) control unit

DVD player

DIAGNOSIS SYSTEM
AV-95
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2007 April2007 M35/M45

AV COMM CIRCUIT

Switches Connection Error

Audio Unit Connection Error

Amplifier Connection Error

Rearview Camera Connection ErrorBOSE surround 5.1ch system

Malfunction is detected on communi-
cation circuit between DVD player
and multifunction switch

Communication circuit between DVD
player and multifunction switch

DVD player

Multifunction switch
BOSE 2ch system

Malfunction is detected on communi-
cation circuit between AV (NAVI)
control unit and multifunction switch

Communication circuit between AV
(NAVI) control unit and multifunction
switch

AV ( N AV I ) c o n t r o l u n i t

Multifunction switch

AV COMM CIRCUIT

Audio Unit Connection Error

Amplifier Connection Error

Rearview Camera Connection ErrorMalfunction is detected on communi-
cation circuit between multifunction
switch and camera control unit

Communication circuit between multi-
function switch and camera control unit

Multifunction switch

Camera control unit

AV COMM CIRCUIT

Audio Unit Connection Error

Amplifier Connection ErrorBase system

Audio unit power supply and ground
circuit malfunction is detected

Malfunction is detected on communi-
cation circuit between multifunction
switch and audio unit

Malfunction is detected on communi-
cation signal between audio unit and
AV ( N AV I ) c o n t r o l u n i t

Audio unit power supply and ground cir-
cuit

Communication circuit between multi-
function switch and audio unit

Multifunction switch

Audio unit

AV ( N AV I ) c o n t r o l u n i t
BOSE system

Malfunction is detected on communi-
cation circuit between camera con-
trol unit and BOSE amp

Communication circuit between camera
control unit and BOSE amp

Camera control unit

BOSE amp

AV COMM CIRCUIT

Audio Unit Connection Error

Audio unit power supply and ground
circuit malfunction is detected

Malfunction is detected on communi-
cation circuit between BOSE amp
and audio unit

Malfunction is detected on communi-
cation signal between audio unit and
AV ( N AV I ) c o n t r o l u n i t

Audio unit power supply and ground cir-
cuit

Communication circuit between BOSE
amp and audio unit

Audio unit

AV ( N AV I ) c o n t r o l u n i t

BOSE amp

AV COMM CIRCUIT

Rearview Camera Connection Error

Camera control unit power supply
and ground circuit malfunction is
detected

Malfunction is detected on communi-
cation signal between camera con-
trol unit and AV (NAVI) control unit

Camera control unit power supply and
ground circuit

Camera control unit

AV ( N AV I ) c o n t r o l u n i t

AV COMM CIRCUIT

Switches Connection Error

Multifunction switch power supply
and ground circuit malfunction is
detected

Malfunction is detected on communi-
cation signal between multifunction
switch and AV (NAVI) control unit

Multifunction switch power supply and
ground circuit

Multifunction switch

AV ( N AV I ) c o n t r o l u n i t

AV COMM CIRCUIT

DVD Deck Connection Error

DVD player power supply and
ground circuit malfunction is
detected

Malfunction is detected on communi-
cation signal between DVD player
and AV (NAVI) control unit

DVD player power supply and ground
circuit

DVD player

AV ( N AV I ) c o n t r o l u n i t Error item Description Possible cause/Action to take

AV-96
[WITHOUT MOBILE ENTERTAINMENT SYSTEM]
DIAGNOSIS SYSTEM
Revision: 2007 April2007 M35/M45

AV COMM CIRCUIT

Amplifier Connection Error

BOSE amp power supply and
ground circuit malfunction is
detected

Malfunction is detected on communi-
cation signal between BOSE amp
and AV (NAVI) control unit

BOSE amp power supply and ground
circuit

BOSE amp

AV (NAVI) control unit
Front Display Connection Error

Front display unit power supply and
ground circuit malfunction is
detected

Malfunction is detected on communi-
cation circuit between front display
unit and AV (NAVI) control unit

Malfunction is detected on communi-
cation signal between front display
unit and AV (NAVI) control unit

Front display unit power supply and
ground

Communication circuit between front
display unit and AV (NAVI) control unit

Front display unit

AV (NAVI) control unit
GPS Antenna ErrorGPS antenna connection malfunction
is detected

GPS antenna feeder

GPS antenna

NAVI control unit
Camera Control Unit Connection ErrorCamera and connection recognition
signal circuit malfunction is detected

Camera-connection recognition signal
circuit

Camera control unit

AV (NAVI) control unit
FLASH-ROM Error Of Control UnitAV (NAVI) control unit malfunction is
detectedReplace AV (NAVI) control unit
Refer to AV-131, "
AV (NAVI) Control Unit"
Connection Of GyroNAVI control unit malfunction is
detectedReplace NAVI control unit
Refer to AV-131, "AV (NAVI) Control Unit"
GPS Communication Error
GPS malfunction is detectedIf the symptoms such as the GPS receipt
malfunction occur, intermittent malfunction
caused by strong radio interference may
be detected.
If the malfunction always occurs, replace
NAVI control unit. GPS ROM Error
GPS RAM Error
GPS RTC Error
DVD-ROM Communication Error

Malfunction is detected on DVD-
ROM drive pickup lens in NAVI con-
trol unit

There is dirt and damage on the map
disc

Map disc

NAVI control unit
Refer to AV-131, "
AV ( N AV I ) C o n t r o l
Unit" DVD-ROM Read Error
DVD-ROM Disc Error
DVD-ROM Mechanism not Detected
DVD-ROM Mechanism Error
DVD-ROM Focus Error
DVD-ROM TOC Error
DVD-ROM Seek Error
DVD-ROM Error Correction Error
DVD-ROM Data Transfer Error
DVD-ROM Data Error
DVD-ROM Time-out
DVD-ROM Loading / Eject Error
CAN Controller Memory Error
AV (NAVI) control unit malfunction is
detectedReplace AV (NAVI) control unit
Refer to AV-131, "
AV (NAVI) Control Unit"Bluetooth Module Connection ErrorError item Description Possible cause/Action to take

DIAGNOSIS SYSTEM
AV-229
[WITH MOBILE ENTERTAINMENT SYSTEM]
C
D
E
F
G
H
I
J
L
MA
B
AV
Revision: 2007 April2007 M35/M45
DIAGNOSIS RESULTS
Check the applicable display in the following table, and then repair the malfunctioning parts.
Control Unit Is Red, Gray, or Yellow
Connection Line Between Units Is Yellow (Only 1 Line)
Switch color Description Possible malfunction/Action to take
Red AV (NAVI) control unit malfunction is detectedReplace AV (NAVI) control unit
Refer to AV-282, "
AV (NAVI) Control Unit"
Ye l l o w
(With NAVI)
Malfunction is detected on DVD-ROM drive pickup
lens in NAVI control unit

There is dirt and damage on the map disc

Map disc

NAVI control unit
Gray
(With NAVI)DVD-ROM not inserted is detected Insert map disc
Applicable parts Description Probable malfunction location
Control unit to Camera Cont.Camera-connection recognition signal malfunc-
tion is detected

Camera control unit power supply and ground
circuit

Camera-connection recognition signal circuit

AV (NAVI) Control unit

Camera control unit
Control unit to GPS Antenna GPS antenna connection malfunction is detected

GPS antenna feeder

GPS antenna

NAVI control unit
Control unit to DVD deck

DVD player power supply and ground circuit
malfunction is detected

Malfunction is detected on communication sig-
nal between DVD player and AV (NAVI) control
unit

DVD player power supply and ground circuit

DVD player

AV (NAVI) control unit
Control unit to Amplifier

BOSE amp power supply and ground circuit
malfunction is detected

Malfunction is detected on communication sig-
nal between BOSE amp and AV (NAVI) control
unit

BOSE amp power supply and ground circuit

BOSE amp

AV (NAVI) control unit
Control unit to Video Distrib-
utor

Video distributor power supply and ground cir-
cuit malfunction is detected

Malfunction is detected on communication sig-
nal between video distributor and AV (NAVI)
control unit

Video distributor power supply and ground cir-
cuit

Video distributor

AV (NAVI) control unit
Control unit to Front Display

Front display unit power supply and ground cir-
cuit malfunction is detected (The diagnosis
screen can be checked at rear display)

Malfunction is detected on communication cir-
cuit between front display unit and AV (NAVI)
control unit

Malfunction is detected on communication sig-
nal between front display unit and AV (NAVI)
control unit

Front display unit power supply and ground cir-
cuit

Front display unit

AV (NAVI) control unit
Control unit to Rear Switches

Rear control switch power supply and ground
circuit malfunction is detected

Malfunction is detected on communication sig-
nal between rear control switch and AV (NAVI)
control unit

Rear control switch power supply and ground
circuit

Rear control switch

AV (NAVI) control unit

AV-230
[WITH MOBILE ENTERTAINMENT SYSTEM]
DIAGNOSIS SYSTEM
Revision: 2007 April2007 M35/M45
Connection Line Between Units Is Yellow (2 or More Lines)
When 2 or more connection lines between control unit (AV control unit, NAVI control) and each unit are dis-
played in yellow, these communication system lines may be open or shorted. The malfunctioning parts can be
detected by the combination of the connection lines displayed in yellow.
Control unit to Audio unit

Audio unit power supply and ground circuit mal-
function is detected

Malfunction is detected on communication cir-
cuit between audio unit and rear control switch
(Models with rear control switch)

Malfunction is detected on communication cir-
cuit between audio unit and BOSE amp (Mod-
els without rear control switch)

Malfunction is detected on communication sig-
nal between audio unit and AV (NAVI) control
unit

Audio unit power supply and ground circuit

Communication circuit between rear control
switch and audio unit

Audio unit

Rear control switch (with rear control switch)

BOSE amp (without rear control switch)

AV (NAVI) Control unit
Video distributor to Rear Dis-
play

Rear display unit power supply and ground cir-
cuit malfunction is detected

Malfunction is detected on communication cir-
cuit between video distributor and rear display
unit

Malfunction is detected on communication sig-
nal between video distributor and rear display
unit

Rear display unit power supply and ground cir-
cuit

Rear display unit

Video distributor

Communication circuit between video distribu-
tor and rear display unit Applicable parts Description Probable malfunction location
Applicable parts Description Probable malfunction location
Control unit to

Amplifier

Rear Switches

Audio unit

Malfunction is detected on communication cir-
cuit between multifunction switch and camera
control unit

Malfunction is detected on communication cir-
cuit between camera control unit and BOSE
amp

Communication circuit between multifunction
switch and camera control unit

Communication circuit between camera control
unit and BOSE amp

Multifunction switch

Camera control unit

BOSE amp
Control unit to

Amplifier

Audio unit

Malfunction is detected on communication cir-
cuit between multifunction switch and camera
control unit

Malfunction is detected on communication cir-
cuit between camera control unit and BOSE
amp

Communication circuit between multifunction
switch and camera control unit

Communication circuit between camera control
unit and BOSE amp

Multifunction switch

Camera control unit

BOSE amp
Control unit to

Rear Switches

Audio unitMalfunction is detected on communication circuit
between BOSE amp and rear control switch

Communication circuit between BOSE amp and
rear control switch

BOSE amp

Rear control switch