Nissan Pathfinder (2012 year). Manual - part 427

 

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Nissan Pathfinder (2012 year). Manual - part 427

 

 

HAC-138

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONER]

MANUAL AIR CONDITIONER SYSTEM

Discharge Air Flow

INFOID:0000000007356421

Switches And Their Control Function

INFOID:0000000007356422

SWITCHES AND THEIR CONTROL FUNCTION

Mode door position

Air outlet/distribution

Vent

Foot

Defroster

95%

5%

60%

40%

20%

55%

25%

15%

50%

35%

7%

15%

78%

Airflow always present at driver and passenger side demisters

WJIA1296E

AWIIA0271GB

August 2012

2012 Pathfinder

MANUAL AIR CONDITIONER SYSTEM

HAC-139

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONER]

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WJIA1497E

August 2012

2012 Pathfinder

HAC-140

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONER]

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000007808144

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

Direct Diagnostic Mode

Description

Ecu Identification

The BCM part number is displayed.

Self Diagnostic Result

The BCM self diagnostic results are displayed.

Data Monitor

The BCM input/output data is displayed in real time.

Active Test

The BCM activates outputs to test components.

Work support

The settings for BCM functions can be changed.

Configuration

• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.

CAN Diag Support Mntr

The result of transmit/receive diagnosis of CAN communication is displayed.

System

Sub System

Direct Diagnostic Mode

E

cu

 Id

en

tifi

ca

tio

n

Se

lf Di

ag

no

st

ic Re

su

lt

Da

ta

 Mo

ni

tor

A

cti

ve

 T

est

W

o

rk support

Co

nf

igu

rat

ion

CA

N Diag

 Su

pp

ort Mn

tr

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 CONDITIONER

×

Intelligent Key system

INTELLIGENT KEY

×

Combination switch

COMB SW

×

BCM

BCM

×

×

×

×

×

Immobilizer

IMMU

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door open

TRUNK

×

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×

Panic alarm system

PANIC ALARM

×

August 2012

2012 Pathfinder

DIAGNOSIS SYSTEM (BCM)

HAC-141

< SYSTEM DESCRIPTION >

[MANUAL AIR CONDITIONER]

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AIR CONDITIONER
AIR CONDITIONER : CONSULT Function (BCM - AIR CONDITIONER)

INFOID:0000000007808145

DATA MONITOR

Monitor Item [Unit]

Description

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

FAN ON SIG [On/Off]

Indicates condition of fan switch.

AIR COND SW [On/Off]

Indicates condition of A/C switch.

August 2012

2012 Pathfinder

HAC-142

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

MODE DOOR MOTOR

DTC/CIRCUIT DIAGNOSIS

MODE DOOR MOTOR

System Description

INFOID:0000000007356425

SYSTEM DESCRIPTION

Component Parts

Mode door control system components are:

• Front air control

• Mode door motor

• PBR (built into mode door motor)

• Intake sensor

System Operation

The mode door position (vent, B/L, foot, D/F, and defrost) is set by the front air control by means of the mode

door motor. When a mode door position is selected on the front air control, voltage is applied to one circuit of

the mode door motor while ground is applied to the other circuit, causing the mode door motor 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 front air control monitors the mode door position by measuring the voltage signal on the PBR circuit.

COMPONENT DESCRIPTION

Mode Door Motor

The mode door motor is attached to the heater and cooling unit

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

cated by the front air control. Motor rotation is conveyed to a link

which activates the mode door.

Mode Door Motor (Front) Component Function Check

INFOID:0000000007356426

SYMPTOM:

• Air outlet does not change.

• Mode door motor does not operate normally.

WJIA1314E

WJIA1484E

August 2012

2012 Pathfinder

MODE DOOR MOTOR

HAC-143

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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INSPECTION FLOW

1.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - DISCHARGE AIR

1. Turn blower control dial to 4. 

2. Turn the mode dial and check all positions. 

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

HAC-138, "Discharge

Air Flow"

.

NOTE:

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

) or D/F (

) is selected.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Go to diagnosis procedure. Refer to 

HAC-143, "Mode Door Motor (Front) Diagnosis Procedure"

.

Mode Door Motor (Front) Diagnosis Procedure

INFOID:0000000007356427

Regarding Wiring Diagram information, refer to 

HAC-172, "Wiring Diagram - Manual"

.

1.

CHECK MODE DOOR MOTOR CIRCUITS FOR OPEN AND SHORT TO GROUND 

1. Turn ignition switch OFF.

2. Disconnect the front air control harness connector M52 and the mode door motor harness connector

M144.

3. Check continuity between front air control harness connector M52 terminals 1, 14 and the mode door

motor harness connector M144 terminals 1, 6.

4. Check continuity between front air control harness connector M52 terminals 1, 14 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness as necessary.

2.

CHECK FRONT AIR CONTROL FOR MODE DOOR MOTOR POWER AND GROUND 

1. Reconnect front air control harness connector.

2. Turn ignition switch ON.
3. Rotate the mode switch to the D/F (

) mode. 

4. Check voltage between front air control harness connector M52 terminal 1 and terminal 14 while rotating

the mode switch to the VENT (

), and then the B/L (

) mode. 

Is the inspection result normal?

YES

>> GO TO 3.

Connector

Terminal

Connector

Terminal

Continuity

M52

1

M144

1

Yes

14

6

Connector

Terminal

Continuity

M52

1

Ground

No

14

Connector

Terminals

Condition Voltage 

(Approx.)

(+) (-)

M52

1

14

While rotating the mode switch from 

D/F (

) mode to VENT (

) mode

Battery voltage

14

1

While rotating the mode switch from 
VENT (

) mode to B/L (

) mode

Battery voltage

August 2012

2012 Pathfinder

HAC-144

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

MODE DOOR MOTOR

NO

>> Replace front air control. Refer to 

VTL-7, "Removal and Installation"

.

3.

CHECK MODE DOOR MOTOR PBR CIRCUITS FOR OPEN AND SHORT TO GROUND 

1. Turn ignition switch OFF.

2. Disconnect the front air control harness connector M52.

3. Check continuity between front air control harness connector M52 terminals 23, 26 and the mode door

motor harness connector M144 terminals 2, 3.

4. Check continuity between front air control harness connector M52 terminals 23, 26 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness as necessary.

4.

CHECK PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN AND SHORT TO GROUND 

1. Check continuity between front air control harness connector M52 terminal 21 and mode door motor har-

ness connector M144 terminal 4.

2. Check continuity between front air control harness connector M52 terminal 21 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness as necessary.

5.

CHECK FRONT AIR CONTROL FOR 5 VOLT REFERENCE (VREF), VREF RETURN, AND FEEDBACK

SIGNAL 
1. Reconnect front air control harness connectors.

2. Turn ignition switch ON.

3. Check voltage between front air control harness connector M52 terminal 23 and terminal 26.

4. Check voltage between front air control harness connector M52 terminal 21 and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace front air control. Refer to 

VTL-7, "Removal and Installation"

.

Connector

Terminal

Connector

Terminal

Continuity

M52

23

M144

3

Yes

26

2

Connector

Terminal

Continuity

M52

23

Ground

No

26

Connector

Terminal

Connector

Terminal

Continuity

M52

21

M144

4

Yes

Connector

Terminal

Continuity

M52

21

Ground

No

Connector

Terminals

Connector

Terminals

Voltage (Approx.)

(+)

(-) 

M52

23

M52

26

5V

Connector

Terminal

Voltage (Approx.)

M52

21

Ground

0V

August 2012

2012 Pathfinder

MODE DOOR MOTOR

HAC-145

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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6.

CHECK FRONT AIR CONTROL FOR FEEDBACK SIGNAL 

1. Reconnect the mode door motor harness connector M144.

2. Check voltage between front air control harness connector M52 terminal 21 and ground.

Is the inspection result normal?

YES

>> Inspect mode door for binding or mechanical failure. If mode door moves freely, replace front air

control. Refer to 

VTL-7, "Removal and Installation"

.

NO

>> Replace the mode door motor. Refer to 

VTL-28, "Removal and Installation"

.

Connector

Terminal

Voltage (Approx.)

M52

21

Ground

0.2 to 4.8V

August 2012

2012 Pathfinder

 

 

 

 

 

 

 

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