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Nissan Pathfinder (2010 year). Manual - part 443

HAC-20

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

AUTOMATIC AIR CONDITIONER SYSTEM

Switches And Their Control Function (Rear)

INFOID:0000000005256910

AWIIA0239GB

AWIIA0240GB

2010 Pathfinder

DIAGNOSIS SYSTEM (HVAC)

HAC-21

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

HAC

DIAGNOSIS SYSTEM (HVAC)

CONSULT-III Function (HVAC)

INFOID:0000000005256911

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

SELF-DIAGNOSIS

Display Item List

DATA MONITOR

Display Item List

Diagnostic mode

Description

ECU PART NUMBER

A/C auto amp. part number can be read.

SELF-DIAG RESULTS

Displays A/C auto amp. self-diagnosis results.

DATA MONITOR

Displays A/C auto amp. input/output data in real time.

DTC

Description

Reference page

B2573

Battery voltage out of range

CHG-5, "Work Flow"

B2578

In-vehicle sensor circuit out of range (low)

HAC-78, "In-Vehicle Sensor Diagnosis Procedure"

B2579

In-vehicle sensor circuit out of range (high)

B257B

Ambient sensor circuit short

HAC-75, "Ambient Sensor Diagnosis Procedure"

B257C

Ambient sensor circuit open

B257F

Optical sensor (Driver) circuit open or short

HAC-81, "Optical Sensor Diagnosis Procedure"

B2580

Optical sensor (Passenger) circuit open or short

B2581

Intake sensor circuit short

HAC-83, "Intake Sensor Diagnosis Procedure"

B2582

Intake sensor circuit open

U1000

CAN bus fault

LAN-4, "System Description"

Monitor item

Value

Contents

BATT VIA CAN

"V"

Displays battery voltage signal.

IGN VIA CAN

"ON/OFF"

Displays ignition switch signal.

DVR SUNLD SEN

"w/m2"

Displays optical sensor (driver) signal.

PAS SUNLD SEN

"w/m2"

Displays optical sensor (passenger) signal.

AMB TEMP SEN

Displays ambient sensor signal.

EVAP TEMP SEN

Displays intake sensor signal.

INCAR TMP SEN

Displays in-vehicle sensor signal.

RR TEMPSET FR

"V"

Displays air mix door (front) set point signal.

RR TEMPSET RR

"V"

Displays air mix door (rear) set point signal.

MODE FDBCK

"V"

Displays mode door motor feedback signal.

DVR MIX FDBCK

"V"

Displays air mix door motor (driver) feedback signal.

PAS MIX FDBCK

"V"

Displays air mix door motor (passenger) feedback signal.

RR FDBCK

"V"

Displays air mix door motor (rear) feedback signal.

2010 Pathfinder

HAC-22

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000005476018

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.

NOTE:

It can perform the diagnosis modes except the following for all sub system selection items.

1: With remote keyless entry system
2: With Intelligent Key

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

SELF-DIAG RESULTS

Displays the diagnosis results judged by BCM. Refer to

BCS-54, "DTC Index"

CAN DIAG SUPPORT MNTR

Monitors the reception status of CAN communication viewed from BCM.

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from BCM.

ECU IDENTIFICATION

The BCM part number is displayed.

CONFIGURATION

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

WORK SUPPORT

DATA MONITOR

ACTIVE TEST

BCM

Door lock

DOOR LOCK

Rear window defogger

REAR DEFOGGER

Warning chime

BUZZER

Interior room lamp timer

INT LAMP

Remote keyless entry system

MULTI REMOTE ENT

Exterior lamp

HEAD LAMP

Wiper and washer

WIPER

Turn signal and hazard warning lamps FLASHER

Air conditioner

AIR CONDITONER

Intelligent Key system

INTELLIGENT KEY

Combination switch

COMB SW

Immobilizer

IMMU

Interior room lamp battery saver

BATTERY SAVER

Back door open

TRUNK

RAP (retained accessory power)

RETAINED PWR

Signal buffer system

SIGNAL BUFFER

TPMS (tire pressure monitoring sys-
tem)

AIR PRESSURE MONITOR

Vehicle security system

THEFT ALM

Panic alarm

PANIC ALARM

2010 Pathfinder

DIAGNOSIS SYSTEM (BCM)

HAC-23

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

HAC

CONSULT-III Function (BCM - AIR CONDITIONER)

INFOID:0000000005476019

DATA MONITOR

Monitor Item

[Unit]

Contents

IGN ON SW [ON/OFF]

Display [ignition switch position (On)/(Off), ACC position (Off)] status as judged from ignition
switch signal

FAN ON SIG [ON/OFF]

Display [FAN (On)/FAN (Off)] status as judged form blower fan motor switch signal

AIR COND SW [ON/OFF]

Display [COMP (On)/COMP (Off)] status as judged form air conditioner switch signal

2010 Pathfinder

HAC-24

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

SELF-DIAGNOSIS FUNCTION

SELF-DIAGNOSIS FUNCTION

A/C Auto Amp. Self-Diagnosis

INFOID:0000000005256914

A/C SYSTEM SELF-DIAGNOSIS FUNCTION

The self-diagnosis function is built into the A/C auto amp. to quickly locate the cause of malfunctions.

DESCRIPTION

The self-diagnostic system diagnoses sensors, CAN system, and battery voltage on A/C auto amp. Refer to

applicable sections (items) for details. Fault codes (if any are present) will be displayed in the ambient temper-

ature display area. Refer to

HAC-25, "A/C System Self-Diagnosis Code Chart"

SELF-DIAGNOSTIC MODE

NOTE:

Radio must be OFF.

1. Turn the ignition switch ON.

2. On the A/C and AV switch assembly, press the "SETTING" but-

ton and twist the volume knob clockwise and counterclockwise

until the Self-Diagnosis screen shows on the display.

3. Scroll down to "Confirmation/Adjustment" and press the

"ENTER" button.

4. Scroll down to "Climate Control" and press the "ENTER" button.

5. The fan bars will flash on the display during the self-test, and

then the fault codes will display in the ambient temperature area.

They will continue scrolling until diagnostic mode is exited.

6. Exit by pressing the "BACK" button on A/C and AV switch

assembly until display returns to its normal operation screen.

HVAC system will be OFF or by turning the ignition switch OFF.

The self-diagnostic system diagnoses sensors, CAN system, and battery voltage on A/C auto amp. Refer to

applicable sections (items) for details. Fault codes (if any are present) will be displayed in the ambient temper-

ature display area. Refer to

HAC-25, "A/C System Self-Diagnosis Code Chart"

A/C and AV Switch Assembly Self-Diagnosis

INFOID:0000000005256915

A/C and AV switch assembly self-diagnosis function

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

Self-diagnosis mode

AWNIA0098ZZ

AWIIA0081ZZ

2010 Pathfinder

SELF-DIAGNOSIS FUNCTION

HAC-25

< FUNCTION DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

HAC

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

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

3 seconds or more. Then the buzzer sounds, all indicators of the

preset switch illuminate, and the self-diagnosis mode starts.

• The continuity of each switch and control dials (A/C and AV switch

assembly only) at the ON position can be checked by pressing

each switch and turning each control dial. The buzzer sounds and

LED's will illuminate if the switch is normal.

Finishing self-diagnosis mode

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

A/C System Self-Diagnosis Code Chart

INFOID:0000000005256916

SELF-DIAGNOSTIC CODE CHART

AWIIA0171GB

Code No.

Reference page

EE changed by calibration

VTL-7, "Removal and Installation"

Battery voltage out of range

CHG-9, "Inspection Procedure"

Passenger air mix door open/short/out of limits

HAC-36, "Air Mix Door Motor (Passenger) Diagnosis Proce-
dure"

Driver air mix door open/short

HAC-33, "Air Mix Door Motor (Driver) Diagnosis Procedure"

In-vehicle sensor circuit out of range (low)

HAC-78, "In-Vehicle Sensor Diagnosis Procedure"

In-vehicle sensor circuit out of range (high)

Air mix door motor (rear) circuit failure

HAC-59, "Rear Air Control Component Function Check"

Ambient sensor circuit short

HAC-75, "Ambient Sensor Diagnosis Procedure"

Ambient sensor circuit open

Intake door motor open

HAC-41, "Intake Door Motor Diagnosis Procedure"

Intake door motor short

Optical sensor (Driver) circuit open or short

HAC-81, "Optical Sensor Diagnosis Procedure"

Optical sensor (Passenger) circuit open or short

Intake sensor circuit short

HAC-157, "Intake Sensor Diagnosis Procedure"

Intake sensor circuit open

CAN bus fault

LAN-14, "Trouble Diagnosis Flow Chart"

BCM message missing

Intake door motor circuit malfunction

HAC-41, "Intake Door Motor Diagnosis Procedure"

Stuck button

VTL-7, "Removal and Installation"

Mode door motor circuit malfunction

HAC-27, "Mode Door Motor (Front) Component Function
Check"

2010 Pathfinder

HAC-26

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MODE DOOR MOTOR

COMPONENT DIAGNOSIS

MODE DOOR MOTOR

System Description

INFOID:0000000005256917

SYSTEM DESCRIPTION

Component Parts

Mode door control system components are:

• A/C auto amp.

• A/C and AV switch assembly

• Mode door motor (front)

• PBR (built into mode door motor)

• In-vehicle sensor

• Ambient sensor

• Optical sensor

• Intake sensor

System Operation

The mode door position (vent, B/L, foot, D/F, and defrost) is set by the A/C auto amp. by means of the mode

door motor (front). When a mode door position is selected on the A/C auto amp., voltage is applied to one cir-

cuit of the mode door motor (front) while ground is applied to the other circuit, causing the mode door motor

(front) to rotate. The direction of rotation is determined by which circuit has voltage applied to it, and which one

has ground applied to it. The A/C auto amp. monitors the mode door position by measuring the voltage signal

on the PBR circuit.

In AUTO mode the mode door position is set by the A/C auto amp. which determines the proper position

based on inputs from the in-vehicle sensor, ambient sensor, optical sensor, intake sensor, and the temperature

selected by the driver or passenger.

Mode Door Control Specification

COMPONENT DESCRIPTION

Mode Door Motor (Front)

AWIIA0092GB

AWIIA0093GB

2010 Pathfinder

MODE DOOR MOTOR

HAC-27

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

HAC

The mode door motor (front) is attached to the heater & cooling unit

assembly. It rotates so that air is discharged from the outlet as indi-

cated by the A/C auto amp. Motor rotation is conveyed to a link

which activates the mode door.

Mode Door Motor (Front) Component Function Check

INFOID:0000000005256918

INSPECTION FLOW

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - DISCHARGE AIR

1. Press mode switch four times and then press the

(DEF) switch. Each position indicator should change

shape (on display).

2. Confirm that discharge air comes out according to the air distribution table. Refer to

HAC-132, "Discharge

Air Flow"

NOTE:

Confirm that the compressor clutch is engaged (visual inspection) and intake door position is at FRESH

when FOOT (

), DEF (

) or D/F (

) is selected.

Can a symptom be duplicated?

YES

>> Inspection End.

>> Go to diagnosis procedure. Refer to

HAC-27, "Mode Door Motor (Front) Diagnosis Procedure"

Mode Door Motor (Front) Diagnosis Procedure

INFOID:0000000005256919

Regarding Wiring Diagram information, refer to

HAC-90, "Wiring Diagram"

SYMPTOM:

• Air outlet does not change.

• Mode door motor does not operate normally.

CHECK A/C AUTO AMP. FOR POWER AND GROUND

1. Turn ignition switch ON.
2. Press the mode switch to the B/L (

) mode.

3. Check voltage between A/C auto amp. harness connector M49

terminal 19 and terminal 20 while pressing the mode switch to
the floor (

) mode.

Is the inspection result normal?

YES

>> GO TO 3.

>> GO TO 2.

CHECK MODE DOOR MOTOR CIRCUITS FOR SHORT TO GROUND

WJIA1084E

Connector

Terminals

Condition

Voltage

(Approx.)

(+) (-)

A/C auto amp.:

M49

Press
mode

switch

Battery
voltage

AWIIA0095ZZ

2010 Pathfinder

Content .. 441 442 443 444 ..