Nissan Pathfinder (2012 year). Manual - part 29

 

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Nissan Pathfinder (2012 year). Manual - part 29

 

 

AV-50

< SYSTEM DESCRIPTION >

[MID AUDIO]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

4. The initial trouble diagnosis screen will be displayed, and items

“Self-Diagnosis” and “Confirmation/Adjustment” can be

selected.

SELF-DIAGNOSIS

1. Perform self-diagnosis by selecting “Self-Diagnosis”.

• Self-diagnosis subdivision screen is displayed, and the self-

diagnosis mode starts.

• A bar graph visible on the center of the self-diagnosis subdivi-

sion screen indicates progress of the trouble diagnosis.

NOTE:

Self-diagnosis requires approximately 10 seconds to complete.

2. Diagnosis results are displayed after the self-diagnosis is com-

pleted. The unit names and the connection lines are color-coded

according to the diagnostic results.

Note:
• Only the AV control unit is displayed in red.
• If multiple malfunctions occur at the same time for a single unit, the screen switch colors are determined according to the follow-

ing order of priority: red > yellow > gray.

3. Select a component on the “Self Diagnosis” screen and com-

ments for the diagnosis results will be shown.

Self-Diagnosis Results

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Diagnosis results

Unit

Connection line

Normal

Green

Green

Connection malfunc-
tion

Gray

Yellow

Unit malfunction 

Note

Red

Green

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2012 Pathfinder

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-51

< SYSTEM DESCRIPTION >

[MID AUDIO]

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CONFIRMATION/ADJUSTMENT MODE

1. Start the diagnosis function and select “Confirmation/Adjustment”. The confirmation/adjustment mode

indicates where each item can be checked or adjusted.

2. Select each item on the “Confirmation/Adjustment” mode screen

to display the relevant trouble diagnosis screen. Press the

“BACK” button or touch "BACK" on the touch screen to return to

the initial Confirmation/Adjustment Mode screen.

Area with yellow connection lines

Description

Possible malfunction location / Action 

to take

AV control unit malfunction is detect-
ed

Replace the AV control unit. Refer to 

AV-114, "Removal and Installation"

.

Poor connection is detected for the 
display unit

• Harness or connector
• AV control unit
• Display unit

Switch malfunction is detected

Perform A/C and AV switch assembly 
diagnostics.  Refer to 

AV-55, "A/C 

AND AV SWITCH ASSEMBLY : Com-
ponent Function Check"

.

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2012 Pathfinder

AV-52

< SYSTEM DESCRIPTION >

[MID AUDIO]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

Display Diagnosis

Vehicle Signals

A comparison check can be made of each actual vehicle signal and

the signals recognized by the system.

Speaker Test

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Diagnosis item

Dis-
play

Vehicle status

Remarks

Vehicle speed

ON

Vehicle speed > 0 km/h

Changes in indication may be delayed by approxi-
mately 1.5 seconds. This is normal.

OFF

Vehicle speed = 0 km/h

Ignition switch in ACC position

Parking brake

ON

Parking brake is applied.

OFF

Parking brake is released.

Lights

ON

Light switch ON

Block the light beam from the auto light optical sensor.

OFF

Light switch OFF

Ignition

ON

Ignition switch ON

OFF

Ignition switch in ACC position

Reverse

ON

Selector lever in R position

Changes in indication may be delayed by approxi-
mately 1.5 seconds. This is normal.

OFF

Selector lever in any position other 
than R

Ignition switch in ACC position

August 2012

2012 Pathfinder

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-53

< SYSTEM DESCRIPTION >

[MID AUDIO]

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Select “Speaker Test” to display the speaker diagnosis screen. Press

“Start” to generate a test tone in speakers. Touch “End” to stop the

test tones.

Error History

The self-diagnosis results are judged depending on whether any

error occurs from when "Self-diagnosis" isselected until the self-

diagnosis results are displayed.

However, the diagnosis results are judged normal if an error has

occurred before the ignition SW is turned ON and then no error has

occurred until the self-diagnosis start. Check the "Error History" to

detect any error that may have occurred before the self-diagnosis

start because of this situation.

Count up method A

• The counter resets to 0 if an error occurs when IGN switch is

turned ON. The counter increases by 1 if the condition is normal at

a next IGN ON cycle.

• The counter upper limit is 39. Any counts exceeding 39 are ignored. The counter can be reset (no error-

record display) with the "Delete log" switch or CONSULT.

Count up method B

• The counter increases by 1 if an error occurs when IGN switch is ON. The counter will not decrease even

ifthe condition is normal at the next IGN ON cycle.

• The counter upper limit is 50. Any counts exceeding 50 are ignored. The counter can be reset (no error-

record display) with the "Delete log" switch or CONSULT.

Vehicle CAN Diagnosis

• CAN communication status and error counter is displayed.

• The error counter displays “OK” if any malfunction was not

detected in the past and displays “0” if a malfunction is detected. It

increases by 1 if the condition is normal at the next ignition switch

ON cycle. The upper limit of the counter is 39.

• The error counter is erased if reset.

AV COMM Diagnosis

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Display method of occur-

rence frequency

Error history diplay item

Count up method A

CAN communication line, control unit (CAN), AV communication line, control unit (AV communica-
tion)

Count up method B

Other than above

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2012 Pathfinder

AV-54

< SYSTEM DESCRIPTION >

[MID AUDIO]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

• AV communication status and error counter is displayed.

• The error counter displays “OK” if any malfunction was not

detected in the past and displays “0” if a malfunction is detected. It

increases by 1 if the condition is normal at the next ignition switch

ON cycle. The upper limit of the counter is 39.

• The error counter is erased if reset.

Delete Unit Connection Log

Deletes any unit connection records and error records from the AV

control unit memory. (Clear the records of the unit that has been

removed)

Inititialize Settings

Initializes the AV control unit memory.

AV CONTROL UNIT : CONSULT Function

INFOID:0000000007347611

CONSULT can display each diagnostic item using the diagnostic test modes shown following.

DATA MONITOR

Display Item List

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MULTI AV diagnosis mode

Description

ECU IDENTIFICATION

The part number of AV control unit can be checked.

SELF-DIAGNOSTIC RESULT

Displays AV control unit self-diagnosis results.

DATA MONITOR

Displays AV control unit input/output data in real time.

CAN DIAG SUPPORT MNTR

The result of transmit/receive diagnosis of CAN communication can be read.

Display item [unit]

ALL

SIGNALS

SELECTION 

FROM MENU

Description

VHCL SPD SIG [ON/OFF]

X

X

Displays “ON” when vehicle speed > 0 km/h. Displays “OFF” when ve-
hicle speed = 0 km/h.

PKB SIG [ON/OFF]

X

X

Displays [ON/OFF] condition of parking brake switch.

ILLUM SIG [ON/OFF]

X

X

Displays [ON/OFF] condition of lighting switch.

August 2012

2012 Pathfinder

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-55

< SYSTEM DESCRIPTION >

[MID AUDIO]

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A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Component Function Check

INFOID:0000000007347612

A/C and AV switch assembly self-diagnosis function

Description

The ON/OFF operation (continuity) of each switch in the A/C and AV switch assembly can be checked.

Self-diagnosis mode

• Press the “BACK” button and the “UP” button within 10 seconds

after turning the ignition switch from OFF to ACC and hold them for

3 seconds or more. When the self-diagnosis mode starts, a beep

will sound and all LED indicators of the  switch will illuminate.

• The continuity of each switch and control dial of the A/C and AV

switch assembly can be checked. If the switch is operating nor-

mally, the system will beep and the LED's will illuminate when each

switch is operated.

Finishing self-diagnosis mode

Self-diagnosis mode is canceled when the ignition switch is turned OFF.

IGN SIG [ON/OFF]

X

X

Displays [ON/OFF] condition of ignition switch.

REV SIG [ON/OFF]

X

X

Displays [ON/OFF] condition of back-up lamp switch.

Display item [unit]

ALL

SIGNALS

SELECTION 

FROM MENU

Description

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AV-56

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO]

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000007347613

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle and each control unit shares information and links with other

control units during operation (not independent). In CAN communication, control units are connected with 2

communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each

control unit transmits/receives data but selectively reads required data only.

CAN Communication Signal Chart. Refer to 

LAN-53, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000007347614

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007347615

1.

PERFORM SELF DIAGNOSTIC

1. Turn ignition switch ON and wait for 2 seconds or more.

2. Check “Self Diagnostic Result” of “MULTI AV”. 
Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to “LAN system”. Refer to 

LAN-14, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to GI section. Refer to 

GI-37, "Intermittent Incident"

.

DTC

Display contents of CON-

SULT

Diagnostic item is detected when ...

Probable malfunction location

U1000

CAN COMM CIRCUIT

When AV control unit is not transmitting or re-
ceiving CAN communication signal for 2 sec-
onds or more.

CAN communication system

August 2012

2012 Pathfinder

AV

U1010 CONTROL UNIT (CAN)

AV-57

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO]

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U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000007347616

Initial diagnosis of AV control unit.

DTC Logic

INFOID:0000000007347617

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007347618

1.

REPLACE AV CONTROL UNIT

When DTC U1010 is detected, replace AV control unit. Refer to 

AV-114, "Removal and Installation"

.

>> Inspection End.

DTC

Display contents of CON-

SULT

Diagnostic item is detected when ...

Probable malfunction location

U1010

CONTROL UNIT (CAN)

CAN initial diagnosis malfunction is detected

AV control unit

August 2012

2012 Pathfinder

 

 

 

 

 

 

 

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