Nissan X-Trail 32. Instruction — part 923
COMPONENT PARTS
EC-821
< SYSTEM DESCRIPTION >
[R9M]
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<Reference data>
Exhaust Gas Temperature Sensor 2
INFOID:0000000010935533
Upstream DPF Temperature Sensor is installed DPF (Diesel Particulate Filter). The sensor uses a thermistor
which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response
to the temperature rises.
<Reference data>
Glow Control Unit
INFOID:0000000010935534
Glow Control Unit performs PWM (Pulse Width Modulation) communication with ECM. It improves engine
starting function by performing glow control.
Glow Plug
INFOID:0000000010935535
The glow plug is located in the cylinder head, in order to stabilize combustion and keep good cold start perfor-
mance.
The glow plug glows in response to a signal sent from the ECM, allowing current to flow through the glow plug
via the glow control unit.
Glow Indicator Lamp
INFOID:0000000010935536
Glow indicator lamp illuminates when glow system is activated in order to inform it to the driver.
Cooling Fan
INFOID:0000000010935537
Cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Refer to
EC-843, "COOLING FAN CONTROL : System Description"
for cooling fan operation.
Cooling Fan Resistor
INFOID:0000000010935538
Cooling Fan Resister is installed to the power circuit of Cooling Fan Motor and switches cooling fan speed
between LOW and HIGH.
When Cooling Fan Motor is rotated at LOW speeds, power is supplied to the cooling fan via Cooling Fan
Resistor.
Thermoplunger
INFOID:0000000010935539
Thermoplunger Unit is installed to the passage of engine coolant and has four thermoplungers. These ther-
moplungers increase engine coolant temperature by the passage of electric current through the Ther-
moplunger Control Unit.
Thermoplunger Control Unit
INFOID:0000000010935540
Thermoplunger Control Unit passes a current to Thermoplungers according to a signal transmitted from ECM.
Exhaust gas temperature
°
C (
°
F)
Resistance (Approx.)
k
Ω
0 (32)
5.671 – 6.118
25 (77)
1.99 – 2.123
100 (212)
0.097 – 0.103
130 (266)
0.087 – 0.091
Exhaust gas temperature
°
C (
°
F)
Resistance (Approx.)
k
Ω
0 (32)
159.8 – 309.4
20 (68)
89.3 – 159.8
100 (212)
15.2 – 22.1
300 (572)
1.307 – 1.562
400 (752)
0.606 – 0.697
EC-822
< SYSTEM DESCRIPTION >
[R9M]
COMPONENT PARTS
Engine Coolant Bypass Valve
INFOID:0000000010935541
Engine Coolant Bypass Valve switches the flow passage of engine coolant. This valve is controlled by Engine
Coolant Bypass Valve Control Solenoid Valve.
Engine Coolant Bypass Valve Control Solenoid Valve
INFOID:0000000010935542
Engine coolant bypass valve control solenoid valve is controlled by ECM. The solenoid valve controls negative
pressure given to diaphragm of engine coolant bypass valve. When engine coolant bypass valve control sole-
noid valve is activated, it opens solenoid valve and gives negative pressure from vacuum pump to diaphragm
of engine coolant bypass valve.
Accelerator Pedal Position Sensor
INFOID:0000000010935543
The accelerator pedal position (APP) sensor is installed on the upper
end of the accelerator pedal assembly. The sensors detect the
accelerator pedal position and sends a signal to the ECM. The ECM
uses the signal to determine the amount of fuel to be injected.
Refrigerant Pressure Sensor
INFOID:0000000010935544
The refrigerant pressure sensor is installed at the liquid tank of the air conditioner system. The sensor is used
to sense a refrigerant pressure.
Stop Lamp Switch
INFOID:0000000010935545
Stop lamp switch signal is sent to ECM via CAN communication line from BCM. This signal is used mainly to
decrease the engine speed when the vehicle is driving.
Brake Pedal Position Switch
INFOID:0000000010935546
Brake pedal position switch is installed to brake pedal bracket.
ECM detects the state of the brake pedal according to the input signal sent from brake pedal position switch.
Clutch Interlock Switch & Clutch Pedal Position Switch
INFOID:0000000010935547
Clutch interlock switch and clutch pedal position switch are installed to clutch pedal bracket.
ECM detects the state of the clutch pedal by those two types of input signal (ON/OFF).
ASCD Steering Switch
INFOID:0000000010935548
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
PBIB1741E
Clutch pedal
Clutch interlock switch
Clutch pedal position switch
Released
OFF
ON
Depressed
ON
OFF
COMPONENT PARTS
EC-823
< SYSTEM DESCRIPTION >
[R9M]
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Malfunction Indicator Lamp
INFOID:0000000010935549
The malfunction indicator Lamp (MIL) is located on the combination
meter. The MIL will illuminate when the ignition switch is turned ON
without the engine running (bulb check).
When the engine is started, the MIL should turn OFF. If the MIL
remains illuminated, the on board diagnostic system has detected an
engine system malfunction.
Information Display
INFOID:0000000010935550
The operation mode of the ASCD and speed limiter are indicated on the information display in the combination
meter.
ECM transmits the status signal to the combination meter via CAN communication according to ASCD and
speed limiter operation.
DC/DC Converter
INFOID:0000000010935551
The DC/DC converter is installed at the back of the glove box
assembly and supplies power to the electrical equipment.
This converter is connected to ECM via the engine communication
line and includes an internal voltage converter. When restarting the
vehicle from the stop/start system operating condition, the voltage
converter boosts the voltage conveyed from the battery and provides
stable power to the electrical equipment to prevent reset from occur-
ring. For further details, refer to
System Description (M/T models)"
or
TEM : System Description (CVT models)"
.
Engine Restart Relay
INFOID:0000000010935552
The engine restart relay is installed in the relay box and controlled by ECM when restarting the engine during
the stop/start system operation.
Engine Restart Bypass Control Relay
INFOID:0000000010935553
The engine restart bypass control relay is controlled by ECM and controls the engine restart bypass relay.
Engine Restart Bypass Relay
INFOID:0000000010935554
The engine restart bypass relay reduces battery voltage drop right
after the starter motor activation at an engine restart by switching the
electric circuit of the starter motor. For details, refer to
"STOP/START SYSTEM : System Description (M/T models)"
856, "STOP/START SYSTEM : System Description (CVT models)"
Hood Switch
INFOID:0000000010935555
Hood switch is located around radiator core support. Hood switch detects open/close condition of hood and
input the hood switch signal to IPDM E/R.
JPNIA1882ZZ
JSBIA4574ZZ
JSBIA1994ZZ
EC-824
< SYSTEM DESCRIPTION >
[R9M]
COMPONENT PARTS
Stop/Start Indicator Lamp
INFOID:0000000010935556
The stop/start indicator lamp is located on the combination meter.
The stop/start indicator lamp turns ON when the stop/start system is
operating.
When a malfunction is detected in the stop/start system, the stop/
start indicator lamp blinks at a slow speed to alert the driver to the
malfunction. When a driver
′
s operation is judged as dangerous one
during stop/start system operation, the stop/start indicator lamp
blinks at a high speed.
Stop/Start indicator lamp status
*1: Only in models with M/T
*2: Engine is stalled after alert for 1.5 seconds.
Stop/Start OFF Switch
INFOID:0000000010935557
The stop/start OFF switch is mounted on the switch panel of the
driver side lower instrument panel. When the stop/start OFF switch
is pressed, the indicator lump turns ON and the stop/start system
can be deactivated.
For further details, refer to
.
JPBIA4266ZZ
System condition
Condition
Stop/start indicator lamp
Warning chime
Operate
Normal
Illuminate
—
Door (driver side) open
and seat belt released
*1
High speed blinking
Sound
Hood open
High speed blinking
*2
Sound
*2
Fail-Safe
Starter motor operation
counter: too much
Slow speed blinking
—
Malfunction of stop/start
system
Slow speed blinking
—
JSBIA4078ZZ
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