Nissan Pathfinder (2008 year). Manual — part 432

If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
fresh when the FOOT, DEF or D/F is selected.

CHECKING RECIRCULATION (

ONLY)

Press recirculation (

) switch one time. Recirculation indicator should illuminate.

Press recirculation (

) switch one more time. Recirculation indicator should go off.

Listen for intake door position change (blower sound should change slightly).

If NG, go to trouble diagnosis procedure for

HAC-144, "Intake Door Motor Diagnosis Procedure"

If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at fresh
when the FOOT, DEF or D/F is selected. REC (

) is not allowed in DEF (

) D/F (

) or FOOT (

CHECKING TEMPERATURE DECREASE

Rotate temperature control dial (drive or passenger) counterclockwise until 18

C (60

F) is displayed.

Check for cold air at appropriate discharge air outlets.

Conditions

: Engine running and at normal operating temperature

HAC-6

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for

HAC-172,

"Component Function Check"

. If air mix door motor appears to be malfunctioning, go to

HAC-32, "Air Mix Door

Motor Component Function Check"

If OK, continue the check.

CHECKING TEMPERATURE INCREASE

Rotate temperature control dial clockwise (drive or passenger) until 32

C (90

F) is displayed.

Check for hot air at appropriate discharge air outlets.

If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for

HAC-181,

"Component Function Check"

. If air mix door motor appears to be malfunctioning, go to

HAC-32, "Air Mix Door

Motor Component Function Check"

If OK, continue with next check.

CHECK A/C SWITCH

Press A/C switch when AUTO switch is ON, or in manual mode.

A/C switch indicator will turn ON.
• Confirm that the compressor clutch engages (sound or visual inspection).

NOTE:
If current mode setting is DEF or D/F, compressor clutch will already be engaged and cannot be turned off.
If NG, go to trouble diagnosis procedure for

HAC-152, "Magnet Clutch Diagnosis Procedure"

If OK, continue with next check.

CHECKING AUTO MODE

Press AUTO switch.

Display should indicate AUTO.
• If ambient temperature is warm, and selected temperature is cool, confirm that the compressor clutch

engages (sound or visual inspection). (Discharge air and blower speed will depend on ambient, in-vehi-
cle, and set temperatures.)

If NG, go to trouble diagnosis procedure for

HAC-160, "Front Air Control Power and Ground Diagnosis Proce-

dure"

, then if necessary, trouble diagnosis procedure for

HAC-152, "Magnet Clutch Diagnosis Procedure"

If all operational checks are OK (symptom cannot be duplicated), go to malfunction Simulation Tests in

HAC-

122, "How to Perform Trouble Diagnosis For Quick And Accurate Repair"

and perform tests as outlined to sim-

ulate driving conditions environment. If symptom appears. Refer to

HAC-171, "Symptom Matrix Chart"

, and

perform applicable trouble diagnosis procedures.

Operational Check (Rear)

INFOID:0000000001366684

The purpose of the operational check is to confirm that the system operates properly.

CHECKING REAR BLOWER MOTOR

Turn the ignition switch ON.

Rotate rear air control (front) blower control dial to low speed.

Rotate the blower control dial clockwise and continue checking blower speed until all speeds are checked.

Leave blower on maximum speed.

Press the REAR CTRL switch from the rear air control (front).

Rotate rear air control (rear) blower control dial to low speed.

Rotate the blower control dial clockwise and continue checking blower speed until all speeds are checked.

Leave blower on maximum speed.

If NG, go to trouble diagnosis procedure for

HAC-52, "Rear Blower motor Component Function Check"

If OK, continue with next check.

CHECKING REAR TEMPERATURE DECREASE

Press the REAR CTRL switch (indicator off).

Rotate the rear air control (front) temperature control dial counterclockwise to maximum cold.

Check for cold air at appropriate discharge air outlets.

Conditions

: Engine running and at normal operating temperature

INSPECTION AND ADJUSTMENT

HAC-7

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

HAC

Press the REAR CTRL switch (indicator on) from the rear air control (front).

Rotate the rear air control (rear) temperature control dial counterclockwise to maximum cold.

Check for cold air at appropriate discharge air outlets.

If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for

HAC-140,

"Air Mix Door Motor Component Function Check"

. If air mix door motor appears to be malfunctioning, go to

HAC-64, "Rear Air Control (Rear) Diagnosis Procedure"

If OK, continue with next check.

CHECKING REAR TEMPERATURE INCREASE

Press the REAR CTRL switch (indicator off).

Rotate the rear air control (front) temperature control dial clockwise to maximum heat.

Check for hot air at appropriate discharge air outlets.

Press the REAR CTRL switch (indictor on) from the rear air control (front).

Rotate the rear air control (rear) temperature control dial clockwise to maximum heat.

Check for hot air at appropriate discharge air outlets.

If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for

HAC-115,

"Component Function Check"

. If air mix door motor appears to be malfunctioning, go to

HAC-64, "Rear Air

Control (Rear) Diagnosis Procedure"

If NG, go to trouble diagnosis procedure for

HAC-181, "Component Function Check"

If all operational checks are OK (symptom cannot be duplicated), go to

HAC-122, "How to Perform Trouble

Diagnosis For Quick And Accurate Repair"

and perform tests as outlined. If symptom appears, refer to

HAC-

171, "Symptom Matrix Chart"

and perform applicable trouble diagnosis procedures.

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Nissan Pathfinder (2008 year). Manual — part 432

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