Nissan X-Trail 32. Instruction — part 1421
SYSTEM
HAC-159
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
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HAC
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PTC HEATER CONTROL SYSTEM : System Description
INFOID:0000000010939821
SYSTEM DIAGRAM
DESCRIPTION
• BCM performs PTC relay ON/OFF control based on engine speed, engine coolant temperature, electrical
power cut freeze signal (permission signal, retention signal, stop signal), blower motor operation state sig-
nal, front window defogger state signal, ambient temperature signal, battery voltage, and electrical load state
(high beam request, low beam request, and others).
• When PTC relay turns ON, power supply is supplied to PTC heater. Heating element is heated and air flow
temperature is increased. Heating is available for a period of time until engine coolant temperature is
increased when engine starts cold in cold climate.
• Idle up request signal is transmitted from BCM to ECM while PTC heater operates. Idle speed is increased,
warming-up is facilitated, and battery electric power is obtained.
• Electric power supplied to PTC heating element is subject to PTC relay control conditions.
NOTE:
PTC heater operation depends on ambient temperature and battery voltage. PTC heater is ON when ambient
temperature is 8
°
C or less. PTC heater is OFF when ambient temperature is 12
°
C (53.6
°
F) or more. PTC
heater is ON when battery voltage is 11.5 V or more. PTC heater is OFF when battery voltage is 11 V or less.
JMIIA3583GB
PTC heater
Operation
PTC relay-1
PTC relay-2
PTC relay-3
Electric power (W)
OFF
OFF
OFF
OFF
OFF
Approx. 0
PTC heater-1
LOW
ON
OFF
OFF
Approx. 333
PTC heater-2
MID
ON
ON
OFF
Approx. 666
PTC heater-3
HI
ON
ON
ON
Approx. 999
HAC-160
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
SYSTEM
PTC HEATER CONTROL SYSTEM : Circuit Diagram
INFOID:0000000010941039
JMIIA3675GB
OPERATION
HAC-161
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
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OPERATION
Switch Name and Function
INFOID:0000000010939822
OPERATION AND DISPLAY OF AUTOMATIC AIR CONDITIONING SYSTEM
Operation: A/C control
INTAKE switch
A/C switch
MAX DEF switch
Fan control dial
MODE DEF switch
MODE VENT switch
MODE FOOT switch
Temperature control dial
Switch name
Function
INTAKE switch
Air inlet changes between recirculation (REC)
⇔
fresh air intake (FRE) each time this switch is pressed.
• Switch indicator lamp ON: Recirculation
• Switch indicator lamp OFF: Fresh air intake
A/C switch
Compressor control (switch indicator) changes between ON
⇔
OFF each time this switch is pressed
while blower motor is operated.
NOTE:
A/C switch cannot be turned ON when blower motor is OFF.
MAX DEF switch
MAX DEF mode (switch indicator) changes between ON
⇔
OFF each time switch is pressed.
• Air conditioning becomes the following status when MAX DEF mode is turned ON.
- Air outlet: DEF
- Air flow: ON
- Air inlet: Fresh air intake
- A/C switch: ON
• Air conditioning becomes the following status when MAX DEF mode is turned OFF.
- Air outlet: Settings set before DEF mode is turned ON
- Air flow: Settings set before DEF mode is turned ON
- Air inlet: Settings set before DEF mode is turned ON
- A/C switch: Settings set before DEF mode is turned ON
Fan control dial
The air flow can be instructionly set within the range of speeds 1st - 24th by operating the dial.
JMIIA3578ZZ
HAC-162
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
OPERATION
MODE DEF switch
• Air outlet changes to DEF when this switch is pressed while air conditioning is ON and air outlet con-
dition is automatic control.
• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet
condition is instruction control.
- V/D
⇒
VENT
- VENT
⇒
V/D
- B/L
⇒
ALL
- ALL
⇒
B/L
- FOOT
⇒
D/F
- D/F
⇒
FOOT
- DEF
⇒
DEF
• When this switch is pressed while air conditioning is ON and MODE DEF is ON, air outlet control is
changed to automatic control.
• When this switch is pressed while air conditioning is OFF, air conditioning becomes the following status
- Air outlet: DEF
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, air conditioning becomes the following status
- Air outlet: DEF
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
*: When MAX DEF is turned ON from air conditioning OFF status, each settings set before air condition-
ing is turned OFF.
MODE VENT switch
• Air outlet changes to VENT when this switch is pressed while air conditioning is ON and air outlet con-
dition is automatic control.
• Air outlet changes as following when this switch is pressed while air conditioning is ON and air outlet
condition is instruction control.
- V/D
⇒
DEF
- VENT
⇒
VENT
- B/L
⇒
FOOT
- ALL
⇒
D/F
- FOOT
⇒
B/L
- D/F
⇒
ALL
- DEF
⇒
V/D
• When this switch is pressed while air conditioning is ON and MODE VENT is ON, air outlet control is
changed to automatic control.
• When this switch is pressed while air conditioning is OFF, air conditioning becomes the following status
- Air outlet: VENT
- Air flow: Minimum setting
- Air inlet: Settings set before air conditioning is turned OFF
- A/C switch: Settings set before air conditioning is turned OFF
• When this switch is pressed while MAX DEF is ON, air conditioning becomes the following status
- Air outlet: VENT
- Air flow: Settings set before MAX DEF is turned ON*
- Air inlet: Settings set before MAX DEF is turned ON*
- A/C switch: Settings set before MAX DEF is turned ON*
NOTE:
*: When MAX DEF is turned ON from air conditioning OFF status, each settings set before air condition-
ing is turned OFF.
Switch name
Function
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