Nissan Pathfinder (2010 year). Manual - part 448

 

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Nissan Pathfinder (2010 year). Manual - part 448

 

 

HAC-60

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

REAR AIR CONTROL SYSTEM

4. Check for hot air at rear floor discharge air outlets in the maximum heat position and cold air at rear roof

discharge air outlets in the maximum cold position.

 Does the rear air control (rear) operate properly?

YES

>> GO TO 3.

NO

>> Check rear air control (rear). Refer to 

HAC-62, "Rear Air Control (Rear) Diagnosis Procedure"

.

3.

CHECK FOR ANY SYMPTOMS 

Perform a complete operational check (rear) for any symptoms.
Does another symptom exist?

YES

>> Refer to 

HAC-4, "How to Perform Trouble Diagnosis For Quick And Accurate Repair"

NO

>> System OK.

4.

CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 5.

5.

CONFIRM SYMPTOM BY PERFORMING REAR AIR CONTROL (REAR) OPERATIONAL CHECK

Perform rear air control operation diagnosis to check for any codes. Refer to 

HAC-6, "Operational Check

(Rear)"

Are any symptoms present?

YES

>> Refer to 

HAC-106, "Symptom Matrix Chart"

.

NO

>> System OK.

Rear Air Control (Front) Diagnosis Procedure

INFOID:0000000005256940

Regarding Wiring Diagram information, refer to 

HAC-90, "Wiring Diagram"

.

DIAGNOSTIC PROCEDURE FOR REAR AIR CONTROL (FRONT)

SYMPTOM: 

• Temperature/mode operation is malfunctioning.

1.

CHECK REAR AIR CONTROL (FRONT) POWER SUPPLY

1. Disconnect rear air control (front) harness connector.

2. Turn ignition switch ON.

3. Check voltage between rear air control (front) harness connec-

tor R2 terminal 10 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK REAR AIR CONTROL (FRONT) REFERENCE VOLTAGE

Battery voltage should exist.

AWIIA0253ZZ

2010 Pathfinder

REAR AIR CONTROL SYSTEM

HAC-61

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

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HAC

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Check voltage between rear air control (front) harness connector R2

terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 6.

3.

CHECK REAR AIR CONTROL (FRONT) AUX TEMP POT VOLTAGE

Check voltage between rear air control (front) harness connector R2

terminal 7 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 7.

4.

CHECK REAR AIR CONTROL (FRONT) GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between rear air control (front) harness con-

nector R2 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK REAR AIR CONTROL (FRONT) REFERENCE GROUND CIRCUIT

Check continuity between rear air control (front) harness connector

R2 terminal 8 and ground.

Is the inspection result normal?

YES

>> Replace rear air control (front). Refer to 

VTL-7,

"Removal and Installation"

NO

>> GO TO 8.

6.

CHECK REAR AIR CONTROL (FRONT) REFERENCE VOLTAGE CIRCUIT

Connector

Terminals

Voltage (Ap-

prox.)

(+)

(-)

Rear air control (front): R2

3

Ground

4.5V

AWIIA0257ZZ

Connector

Terminals

Voltage (Ap-

prox.)

(+)

(-)

Rear air control (front): R2

7

Ground

4.5V

AWIIA0258ZZ

Continuity should exist.

AWIIA0254ZZ

Continuity should exist.

AWIIA0259ZZ

2010 Pathfinder

HAC-62

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

REAR AIR CONTROL SYSTEM

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector.

3. Check continuity between A/C auto amp. harness connector

M50 (A) terminal 28 and rear air control (front) harness connec-

tor R2 (B) terminal 3.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

VTL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

7.

CHECK REAR AIR CONTROL (FRONT) AUX TEMP POT CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector.

3. Check continuity between A/C auto amp. harness connector

M50 (A) terminal 37 and rear air control (front) harness connec-

tor R2 (B) terminal 7.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

VTL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

8.

CHECK REAR AIR CONTROL (FRONT) REFERENCE GROUND CIRCUIT FOR OPEN

1. Disconnect A/C auto amp. connector.

2. Check continuity between A/C auto amp. harness connector

M49 (A) terminal 3 and rear air control (front) harness connector

R2 (B) terminal 8.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

VTL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

Rear Air Control (Rear) Diagnosis Procedure

INFOID:0000000005256941

Regarding Wiring Diagram information, refer to 

HAC-90, "Wiring Diagram"

.

DIAGNOSTIC PROCEDURE FOR REAR AIR CONTROL (REAR)

1.

CHECK REAR AIR CONTROL (REAR) AUX TEMPERATURE POT VOLTAGE

1. Turn ignition switch OFF.

2. Disconnect rear air control (rear).

3. Turn ignition switch ON.

4. Check voltage between rear air control (rear) harness connector

M208 terminal 7 and ground.

Is the inspection result normal? 

Continuity should exist.

AWIIA0260ZZ

Continuity should exist.

AWIIA0235ZZ

Continuity should exist.

AWIIA0261ZZ

Connector

Terminals

Voltage (Ap-

prox.)

(+)

(-)

Rear air control (rear): M208

7

Ground

4.5V

AWIIA0258ZZ

2010 Pathfinder

REAR AIR CONTROL SYSTEM

HAC-63

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

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A

B

HAC

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O

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YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK REAR AIR CONTROL (REAR) REFERENCE VOLTAGE

Check voltage between rear air control (rear) harness connector

M208 terminal 3 and ground.

Is the inspection result normal? 

YES

>> GO TO 3.

NO

>> GO TO 6

3.

CHECK REAR AIR CONTROL (REAR) REFERENCE RETURN GROUND

1. Turn ignition switch OFF.

2. Check continuity between rear air control (rear) harness connec-

tor M208 terminal 8 and ground.

Is the inspection result normal? 

YES

>> GO TO 4.

NO

>> GO TO 7.

4.

CHECK REAR AIR CONTROL (REAR) GROUND CIRCUIT

1. Check continuity between rear air control (rear) harness connec-

tor M208 terminal 1 and ground.

Is the inspection result normal? 

YES

>> Replace rear air control (rear). Refer to 

VTL-7,

"Removal and Installation"

.

NO

>> Repair harness or connector.

5.

CHECK REAR AUX TEMP CIRCUIT BETWEEN REAR AIR CONTROL (REAR) AND A/C AUTO AMP. FOR

OPEN

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector.

3. Check continuity between rear air control (rear) harness connec-

tor M50 (A) terminal 51 and rear air control (rear) harness con-

nector M208 (B) terminal 7.

Is the inspection result normal? 

YES

>> Replace A/C auto amp. Refer to 

VTL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

6.

CHECK REFERENCE VOLTAGE CIRCUIT BETWEEN REAR AIR CONTROL (REAR) AND A/C AUTO

AMP. FOR OPEN

Connector

Terminals

Voltage (Ap-

prox.)

(+)

(-)

Rear air control (rear): M208

3

Ground

4.5V

AWIIA0257ZZ

Continuity should exist.

AWIIA0259ZZ

Continuity should exist.

AWIIA0254ZZ

Continuity should exist.

AWIIA0235ZZ

2010 Pathfinder

HAC-64

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

REAR AIR CONTROL SYSTEM

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector.

3. Check continuity between rear air control (rear) harness connec-

tor M50 (A) terminal 28 and rear air control (rear) harness con-

nector M208 (B) terminal 3.

Is the inspection result normal? 

YES

>> Replace A/C auto amp. Refer to 

VTL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

7.

CHECK REFERENCE RETURN GROUND CIRCUIT BETWEEN REAR AIR CONTROL (REAR) AND A/C

AUTO AMP. FOR OPEN
1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector.

3. Check continuity between rear air control (rear) harness connec-

tor M49 (A) terminal 3 and rear air control (rear) harness con-

nector M208 (B) terminal 8.

Is the inspection result normal? 

YES

>> Replace A/C auto amp. Refer to 

VTL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

Continuity should exist.

AWIIA0260ZZ

Continuity should exist.

AWIIA0261ZZ

2010 Pathfinder

MAGNET CLUTCH

HAC-65

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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HAC

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MAGNET CLUTCH

System Description

INFOID:0000000005256942

SYSTEM DESCRIPTION

The A/C auto amp. controls compressor operation based on ambient and intake temperature and a signal

from ECM.

Low Temperature Protection Control

The A/C auto amp. will turn the compressor ON or OFF as determined by a signal detected by the intake sen-

sor and the ambient sensor.

When intake air temperature is higher than the preset value, the compressor turns ON. The compressor turns

OFF when intake air temperature is lower than the preset value. That preset value is dependent on the ambi-

ent temperature, refer to the following table.

Magnet Clutch Component Function Check

INFOID:0000000005256943

INSPECTION FLOW

1.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - MAGNET CLUTCH

1. Turn ignition switch ON.

2. Press the A/C switch.
3. Press vent switch (

).

4. Display shows 

, A/C. Confirm that the compressor clutch engages (sound or visual inspection). (Dis-

charge air and blower speed will depend on ambient, in-vehicle and set temperatures.)

Can the symptom be duplicated?

YES

>> Inspection End.

NO

>> Go to diagnosis procedure. Refer to 

HAC-65, "Magnet Clutch Diagnosis Procedure"

.

Magnet Clutch Diagnosis Procedure

INFOID:0000000005256944

Regarding Wiring Diagram information, refer to 

HAC-90, "Wiring Diagram"

.

DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH

Ambient temperature 

°

(

°

F)

VK56DE Model

VQ40DE Model

Compressor ON             

intake temperature 

°

(

°

F)

Compressor OFF             

intake temperature 

°

(

°

F)

Compressor ON             

intake temperature 

°

(

°

F)

Compressor OFF             

intake temperature 

°

(

°

F)

0 (32)

6.0 (43)

5.5 (42)

5.5 (42)

5.0 (41)

10 (50)

5.0 (41)

5.0 (41)

4.5 (40)

4.5 (40)

20 (68)

3.5 (38)

3.0 (37)

3.0 (37)

2.5 (37)

30 (86)

3.0 (37)

2.5 (37)

2.5 (37)

1.5 (35)

40 (104)

3.0 (37)

2.5 (37)

2.0 (36)

1.0 (34)

50 (122)

3.0 (37)

2.5 (37)

2.0 (36)

1.0 (34)

2010 Pathfinder

HAC-66

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MAGNET CLUTCH

SYMPTOM: Magnet clutch does not engage when A/C switch is ON.

1.

CHECK INTAKE AND AMBIENT SENSOR CIRCUITS

Check intake and ambient sensors. Refer to 

HAC-24, "A/C Auto Amp. Self-Diagnosis"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> • Malfunctioning intake sensor. Refer to 

HAC-157, "Intake Sensor Diagnosis Procedure"

.

• Malfunctioning ambient sensor. Refer to 

HAC-75, "Ambient Sensor Diagnosis Procedure"

.

2.

PERFORM AUTO ACTIVE TEST

Refer to 

PCS-12, "Diagnosis Description"

.

Does magnet clutch operate?

YES

>> •

WITH CONSULT-III

GO TO 5.

WITHOUT CONSULT-III

GO TO 6.

NO

>> Check 10A fuse (No. 42, located in IPDM E/R), and GO TO 3.

3.

CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R connector and compressor (magnet

clutch) connector.

3. Check continuity between IPDM E/R harness connector E119

terminal 11 and A/C compressor harness connector F3 terminal

1.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK MAGNET CLUTCH CIRCUIT

AWIIA0198GB

11 – 1

: Continuity should exist.

WJIA0560E

2010 Pathfinder

MAGNET CLUTCH

HAC-67

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Check for operation sound when applying battery voltage direct cur-

rent to terminal.
Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-33, "Removal and

Installation of IPDM E/R"

.

NO

>> Replace magnet clutch. Refer to 

HA-40, "Removal and

Installation for Compressor Clutch"

.

5.

CHECK BCM INPUT (COMPRESSOR ON) SIGNAL

Check compressor ON/OFF signal. Refer to 

HAC-21, "CONSULT-III Function (HVAC)"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 6.

6.

CHECK CIRCUIT CONTINUITY BETWEEN BCM AND A/C AUTO AMP.

1. Turn ignition switch OFF.

2. Disconnect BCM connector and A/C auto amp. connector.

3. Check continuity between BCM harness connector M18 (A) ter-

minal 27 and A/C auto amp. harness connector M49 (B) terminal

4.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair harness or connector.

7.

CHECK VOLTAGE FOR A/C AUTO AMP. (A/C COMPRESSOR ON SIGNAL)

1. Reconnect BCM connector and A/C auto amp. connector.

2. Turn ignition switch ON.

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

terminal 4 and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO-1 >> If the voltage is approx. 5V when A/C switch is ON, replace A/C auto amp. Refer to 

VTL-7,

"Removal and Installation"

.

NO-2 >> If the voltage is approx. 0V when A/C switch is OFF, replace BCM. Refer to 

BCS-59, "Removal

and Installation"

.

8.

CHECK REFRIGERANT PRESSURE SENSOR

1. Start engine.

SJIA0197E

A/C SW ON

: COMP ON SIG ON

A/C SW OFF

: COMP ON SIG OFF

27 - 4

Continuity should exist.

AWIIA0199ZZ

Terminals

Condition

Voltage

(+)

(-)

A/C auto 

amp. con-

nector

Terminal No.

M49

4

Ground

A/C switch: ON

Approx. 0V

A/C switch: OFF

Approx. 5V

AWIIA0200ZZ

2010 Pathfinder

 

 

 

 

 

 

 

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