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
A part of control
A/C control
Replace A/C control.
Refer to
.
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
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
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
Air outlet does not change.
Mode door motor system installation
condition
Check mode door motor system is
properly installed. Refer to
.
Air inlet does not change.
Intake door motor system installation
condition
Check intake door motor system is
properly installed. Refer to
.
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.
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