Nissan X-Trail 32. Manual - part 1410

PTC HEATER

HAC-115

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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PTC HEATER

Component Function Check

INFOID:0000000010939771

1.

CHECK PTC HEATER OPERATION

1.

Start the engine.

2.

Operate blower motor.

3.

Operate temperature control switch to full hot position.

4.

Check for warm air at discharge air outlet.
NOTE:
• Engine must be cold.
• Battery must be charged.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Refer to 

HAC-115, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010939772

1.

CHECK FUSE AND FUSIBLE LINK

1.

Turn ignition switch OFF.

2.

Check 30 A fuses (Nos. 42, 43 and 44) and 10 A fuse [No. 30, located in fuse block (J/B)].

NOTE:
Refer to 

PG-84, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse is blown. 

2.

CHECK PTC RELAY POWER SUPPLY

1.

Disconnect PTC relay connector.

2.

Turn ignition switch ON.

3.

Check voltage between PTC relay harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between PTC relay and fuse.

3.

CHECK PTC RELAY CONTROL SIGNAL CIRCUIT FOR OPEN

1.

Disconnect BCM connector. 

2.

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

Relay

+

−

Voltage

PTC relay

Connector

Terminal

1

E139

2

Ground

Battery voltage

3

2

E140

2

3

3

E141

2

3

HAC-116

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

PTC HEATER

Is the inspection result normal?

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-116, "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-117, "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-132, "Removal and Installation"

.

Component Inspection (PTC Relay)

INFOID:0000000010939773

1.

CHECK PTC RELAY

1.

Remove PTC relay.

PTC relay

BCM

Continuity

Relay

Connector

Terminal

Connector

Terminal

1

E139

1

E23

172

Existed

2

E140

173

3

E141

170

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

PTC HEATER

HAC-117

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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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.

Component Inspection (PTC Heater)

INFOID:0000000010939774

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-132, "Removal and Installation"

.

Terminal

Voltage

Continuity

3

5

ON

Existed

OFF

Not existed

JSIIA1551ZZ

Terminal

Resistance (

Ω

)

1

2

Except 0 or 

∞

3

2 and 4

5

4

HAC-118

< SYMPTOM DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

AUTOMATIC AIR CONDITIONER SYSTEM

SYMPTOM DIAGNOSIS

AUTOMATIC AIR CONDITIONER SYSTEM

Symptom Table

INFOID:0000000010939775

NOTE:
Perform self-diagnoses with CONSULT and on board diagnosis 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 con-
trolled.

All control

• A/C control power supply or ground 

circuit

• A/C auto amp.

Check A/C control power supply 
and ground circuits.
Refer to 

HAC-105, "A/C CONTROL 

: Diagnosis Procedure"

.

A part of control

A/C control

Replace A/C control.
Refer to 

HAC-125, "Removal and 

Installation"

.

A/C control display or switch indicator lamp does not 
display correctly.
NOTE:
The results of A/C control on board diagnosis are nor-
mal.

A/C auto amp.

Replace A/C auto amp.
Refer to 

HAC-105, "A/C AUTO 

AMP. : Diagnosis Procedure"

.

Discharge air temperature (driver side) does not 
change.

Air mix door motor (driver side) system 
installation condition

Check air mix door motor (driver 
side) system is properly installed. 
Refer to 

HAC-134, "Exploded 

View"

.

Discharge air temperature (passenger side) does not 
change.

Air mix door motor (passenger side) 
system installation condition

Check air mix door motor (passen-
ger side) system is properly in-
stalled. Refer to 

HAC-134, 

"Exploded View"

.

Air outlet does not change.

Mode door motor system installation 
condition

Check mode door motor system is 
properly installed. Refer to 

HAC-

134, "Exploded View"

.

Air inlet does not change.

Intake door motor system installation 
condition

Check intake door motor system is 
properly installed. Refer to 

HAC-

134, "Exploded View"

.

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

• Blower  motor
• Power transistor
• Power transistor power supply or 

ground circuits

• Blower motor control or ground cir-

cuits

• Power transistor control signal cir-

cuits

• Blower motor feedback signal circuits
• A/C auto amp.

Check blower motor circuits.

HAC-107, "Diagnosis Procedure"

 

Compressor does not operate. 

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

erant pressure sensor

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

Check magnet clutch circuits.

HAC-111, "Component Function 
Check"