Nissan X-Trail 32. Manual — part 1435

PTC HEATER

HAC-215

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK PTC HEATER POWER SUPPLY CIRCUIT FOR OPEN

Check continuity between PTC relay harness connector and PTC heater harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK PTC HEATER GROUND CIRCUIT FOR OPEN

Check continuity between PTC heater harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK PTC RELAY

Check PTC relay. Refer to

HAC-215, "Component Inspection (PTC Relay)"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace malfunctioning PTC relay.

7.

CHECK PTC HEATER

Check PTC heater. Refer to

HAC-216, "Component Inspection (PTC Heater)"

.

Is the inspection result normal?

YES

>> Replace BCM. Refer to

BCS-121, "Removal and Installation"

.

NO

>> Replace PTC heater. Refer to

HAC-226, "Removal and Installation"

.

Component Inspection (PTC Relay)

INFOID:0000000010939865

1.

CHECK PTC RELAY

1.

Remove PTC relay.

2.

Check continuity between PTC relay terminals 3 and 5 when the
voltage is supplied between terminals 1 and 2.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning PTC relay.

PTC relay

PTC heater

Continuity

Relay

Connector

Terminal

Connector

Terminal

1

E139

5

E138

1

Existed

2

E140

3

3

E141

5

PTC heater

—

Continuity

Connector

Terminal

E138

2

Ground

Existed

4

Terminal

Voltage

Continuity

3

5

ON

Existed

OFF

Not existed

JSIIA1551ZZ

HAC-216

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL AIR CONDITIONING]

PTC HEATER

Component Inspection (PTC Heater)

INFOID:0000000010939866

1.

CHECK PTC HEATER

Check resistance between PTC heater terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace PTC heater. Refer to

HAC-226, "Removal and Installation"

.

Terminal

Resistance (

Ω

)

1

2

Except 0 or

∞

3

2 and 4

5

4

MANUAL AIR CONDITIONING SYSTEM

HAC-217

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

SYMPTOM DIAGNOSIS

MANUAL AIR CONDITIONING SYSTEM

Symptom Table

INFOID:0000000010939867

NOTE:
Perform self-diagnoses with CONSULT before performing the symptom diagnosis. If any DTC is detected,
perform the corresponding diagnosis.

Symptom

Corresponding malfunction part

Check item/Reference

Air conditioning cannot be controlled.

• A/C amp. power supply or ground cir-

cuit

• A/C amp.

Check A/C amp. power supply and
ground circuits.

HAC-204, "A/C AMP. : Diagnosis
Procedure"

Discharge air temperature does not change.

Air mix door motor system installation
condition

Check air mix door motor system is
properly installed. Refer to

HAC-

228, "Exploded View"

.

Air outlet does not change.

Mode door motor system installation
condition

Check mode door motor system is
properly installed. Refer to

HAC-

228, "Exploded View"

.

Air inlet does not change.

Intake door motor system installation
condition

Check intake door motor system is
properly installed. Refer to

HAC-

228, "Exploded View"

.

Blower motor does not operates or operation speed is
not normal.

• Blower motor power supply circuit.
• A/C amp. ignition power supply sig-

nal circuit

• Fan control amp. power supply circuit
• Fan control amp. ground circuit
• Fan control amp. control signal circuit
• Blower motor
• Fan control amp.
• A/C amp.

Check blower motor circuits.

HAC-205, "Diagnosis Procedure"

Blower motor operates at the maxi-
mum fan speed and fan speed can-
not be selected.

Blower motor
can be switched
to OFF.

• A/C amp. ignition power supply sig-

nal circuit

• Blower motor feedback signal circuit
• A/C amp.

Blower motor
cannot be
switched to
OFF.

• Blower motor feedback signal circuit
• A/C amp. power supply circuit
• Fan control amp. power supply circuit
• Fan control amp. control signal circuit
• Fan control amp.
• A/C amp.

Compressor does not operate.

• Magnet clutch
• Magnet clutch power supply circuit
• Magnet clutch ground circuit
• IPDM E/R (A/C relay)
• The circuit between ECM and refrig-

erant pressure sensor

• Refrigerant pressure sensor
• ECM
• A/C amp.

Check magnet clutch circuits.

HAC-210, "Component Function
Check"

• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)

• Magnet clutch control system
• Drive belt slipping
• Cooler cycle
• ECV (Electrical control valve)
• Air leakage from each duct

HAC-219, "Diagnosis Procedure"

HAC-218

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONING]

MANUAL AIR CONDITIONING SYSTEM

• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)

• Engine cooling system
• Heater hose
• Heater core
• Air leakage from each duct
• PTC heater system (with PTC heat-

er)

HAC-220, "Diagnosis Procedure"

Noise is heard
when the air
conditioning op-
erates.

During compressor operation

Cooler cycle

Symptom table for noise
•

HA-29, "Symptom Table"

(R9M

engine models except for Russia)

•

HA-75, "Symptom Table"

(MR20DD engine models)

During blower motor operation

• Mixing any foreign object in blower

motor

• Blower motor fan breakage
• Blower motor rotation inferiority

Check blower motor.

HAC-208, "Component Inspection
(Blower Motor)"

Symptom

Corresponding malfunction part

Check item/Reference