Nissan Pathfinder (2011 year). Manual - part 460

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:0000000006243707

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

2011 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

2011 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-27, "Removal and Installation"

.

Connector

Terminal

—

Voltage (Approx.)

M52

21

Ground

0.2 to 4.8V

2011 Pathfinder

HAC-146

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR MIX DOOR MOTOR

AIR MIX DOOR MOTOR

System Description

INFOID:0000000006243708

SYSTEM DESCRIPTION

Component Parts

Air mix door control system components are:

• Front air control

• Air mix door motor 

• PBR (built into air mix door motor)

• Intake sensor

System Operation

The front air control receives data from the temperature selected by the driver. The front air control then

applies a voltage to one circuit of the air mix door motor, while ground is applied to the other circuit, causing

the air mix 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 air mix door positions by measur-

ing the voltage signal on the PBR circuits of each door.

Air Mix Door Control Specification

COMPONENT DESCRIPTION

Air Mix Door Motors

WJIA1316E

WJIA0435E

2011 Pathfinder

AIR MIX DOOR MOTOR

HAC-147

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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The air mix door motor (1) is attached to the front heater and cooling

unit assembly. This motor rotates so that the air mix door is opened

or closed to a position set by the front air control. Motor rotation is

then conveyed through a shaft and the air mix door position is then

fed back to the front air control by the PBR built into the air mix door

motor  (

⇒

: Front).

↓

Air Mix Door Motor Component Function Check

INFOID:0000000006243709

INSPECTION FLOW

1.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE

1. Blower must be on (1, 2, 3, 4).

2. Turn the temperature control dial clockwise to maximum heat.

3. Check for hot air at discharge air outlets.

>> GO TO 2.

2.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE

1. Turn the temperature control dial counterclockwise to maximum cold.

2. Check for cold air at discharge air outlets.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Go to diagnosis procedure. Refer to 

HAC-147, "Air Mix Door Motor Diagnosis Procedure"

.

Air Mix Door Motor Diagnosis Procedure

INFOID:0000000006243710

Regarding Wiring Diagram information, refer to 

HAC-172, "Wiring Diagram - Manual"

.

SYMPTOM:

• Discharge air temperature does not change.

• Air mix door motor does not operate.

1.

CHECK AIR MIX 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 air mix door motor harness connector

M149.

3. Check continuity between front air control harness connector M52 terminals 2, 3 and the air mix door

motor harness connector M149 terminals 5, 6.

4. Check continuity between front air control harness connector M52 terminals 2, 3 and ground.

AWIIA1195ZZ

Connector

Terminal

Connector

Terminal

Continuity

M52

2

M149

6

Yes

3

5

Connector

Terminal

—

Continuity

M52

2

Ground

No

3

2011 Pathfinder

HAC-148

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

AIR MIX DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness as necessary.

2.

CHECK FRONT AIR CONTROL FOR AIR MIX DOOR MOTOR POWER AND GROUND 

1. Reconnect front air control harness connector.

2. Turn ignition switch ON.

3. Rotate temperature control dial to 32

°

C (90

°

F).

4. Check voltage between front air control harness connector M52 terminal 2 and terminal 3 while rotating

temperature control dial to 18

°

C (60

°

F) and back to 32

°

C (90

°

F).

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace front air control. Refer to 

VTL-7, "Removal and Installation"

.

3.

CHECK AIR MIX 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 air mix door motor

harness connector M149 terminals 1, 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 22 and air mix door motor har-

ness connector M149 terminal 2.

2. Check continuity between front air control harness connector M52 terminal 22 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness as necessary.

Connector

Terminals

Condition Voltage 

(Approx.)

(+) (-)

M52

2

3

While rotating temperature control 

dial from 32

°

C (90

°

F) to 18

°

C (60

°

F)

Battery voltage

3

2

While rotating temperature control 

dial from 18

°

C (60

°

F) to 32

°

C (90

°

F)

Battery voltage

Connector

Terminal

Connector

Terminal

Continuity

M52

23

M149

1

Yes

26

3

Connector

Terminal

—

Continuity

M52

23

Ground

No

26

Connector

Terminal

Connector

Terminal

Continuity

M52

22

M149

2

Yes

Connector

Terminal

—

Continuity

M52

22

Ground

No

2011 Pathfinder

AIR MIX DOOR MOTOR

HAC-149

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

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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 22 and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace front air control. Refer to 

VTL-7, "Removal and Installation"

.

6.

CHECK FRONT AIR CONTROL FOR FEEDBACK SIGNAL 

1. Reconnect the air mix door motor harness connector M149.

2. Check voltage between front air control harness connector M52 terminal 22 and ground.

Is the inspection result normal?

YES

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

control. Refer to 

VTL-7, "Removal and Installation"

.

NO

>> Replace air mix door motor. Refer to 

VTL-29, "Removal and Installation"

.

Connector

Terminal

Connector

Terminal

Voltage (Approx.)

(+)

(-) 

M52

23

M52

26

5V

Connector

Terminal

—

Voltage (Approx.)

M52

22

Ground

0V

Connector

Terminal

—

Voltage (Approx.)

M52

22

Ground

0.2 to 4.8V

2011 Pathfinder

HAC-150

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

INTAKE DOOR MOTOR

INTAKE DOOR MOTOR

System Description

INFOID:0000000006243711

SYSTEM DESCRIPTION

Component Parts

Intake door control system components are:

• Front air control

• Intake door motor

• Intake sensor

System Operation

The intake door control determines the intake door position based on the position of the recirculation switch.

When the recirculation switch is depressed the intake door motor rotates closing off the fresh air inlet and

recirculating the cabin air. If the recirculation switch is depressed again, the intake door motor rotates in the

opposite direction, again allowing fresh air into the cabin.

COMPONENT DESCRIPTION

Intake door motor

The intake door motor is attached to the intake unit. It rotates so that

air is drawn from inlets set by the front air control. Motor rotation is

conveyed to a lever which activates the intake door.

Intake Door Motor Component Function Check

INFOID:0000000006243712

SYMPTOM:

• Intake door does not change.

• Intake door motor does not operate normally.

INSPECTION FLOW

1.

CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - REC (

)

1. Turn blower control dial to 4.

WJIA1478E

WJIA1486E

2011 Pathfinder