Nissan Qashqai (2007-2010). Manual — part 229
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-435
< FUNCTION DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
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NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
AC PRESS SEN
V
• The signal voltage from the refrigerant pressure
sensor is displayed.
VHCL SPEED SE
km/h or mph
• The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played.
SET VHCL SPD
km/h or mph
• The preset vehicle speed is displayed.
MAIN SW
ON/OFF
• Indicates [ON/OFF] condition from MAIN switch
signal.
CANCEL SW
ON/OFF
• Indicates [ON/OFF] condition from CANCEL
switch signal.
RESUME/ACC SW
ON/OFF
• Indicates [ON/OFF] condition from RESUME/AC-
CELERATE switch signal.
SET SW
ON/OFF
• Indicates [ON/OFF] condition from SET/COAST
switch signal.
BRAKE SW1
ON/OFF
• Indicates [ON/OFF] condition from ASCD brake
switch signal.
BRAKE SW2
ON/OFF
• Indicates [ON/OFF] condition of stop lamp switch
signal.
VHCL SPD CUT
NON/CUT
• Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low compared with the ASCD set speed, and
ASCD operation is cut off.
LO SPEED CUT
NON/CUT
• Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low, and ASCD operation is cut off.
CRUISE LAMP
ON/OFF
• Indicates [ON/OFF] condition of CRUISE lamp
determined by the ECM according to the input
signals.
SET LAMP
ON/OFF
• Indicates [ON/OFF] condition of SET lamp deter-
mined by the ECM according to the input signals.
Voltage
V
• Voltage, frequency, duty cycle or pulse width
measured by the probe.
• Only “#” is displayed if item is unable
to be measured.
• Figures with “#”s are temporary ones.
They are the same figures as an actu-
al piece of data which was just previ-
ously measured.
Frequency
msec, Hz or %
DUTY-HI
—
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOW
Monitored item
Unit
Description
Remarks
EC-436
< FUNCTION DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*: Leaving cooling fan OFF with CONSULT-III while engine is running may cause the engine to overheat.
TEST ITEM
CONDITION
JUDGEMENT
CHECK ITEM (REMEDY)
FUEL INJECTION
• Engine: Return to the original
trouble condition
• Change the amount of fuel injec-
tion using CONSULT-III.
If trouble symptom disappears, see
CHECK ITEM.
• Harness and connectors
• Fuel injector
• Heated oxygen sensor 1
IGNITION TIMING
• Engine: Return to the original
trouble condition
• Timing light: Set
• Retard the ignition timing using
CONSULT-III.
If trouble symptom disappears, see
CHECK ITEM.
• Perform Idle Air Volume Learn-
ing.
POWER BALANCE
• Engine: After warming up, idle the
engine.
• A/C switch OFF
• Shift lever: Neutral
• Cut off each fuel injector signal
one at a time using CONSULT-III.
Engine runs rough or dies.
• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil
COOLING FAN*
• Ignition switch: ON
• Turn the cooling fan “LOW”, “HI”
and “OFF” CONSULT-III.
Cooling fan moves and stops.
• Harness and connectors
• IPDM E/R (Cooling fan relay)
• Cooling fan motor
ENG COOLANT
TEMP
• Engine: Return to the original
trouble condition
• Change the engine coolant tem-
perature using CONSULT-III.
If trouble symptom disappears, see
CHECK ITEM.
• Harness and connectors
• Engine coolant temperature
sensor
• Fuel injector
FUEL PUMP RELAY
• Ignition switch: ON (Engine
stopped)
• Turn the fuel pump relay “ON”
and “OFF” using CONSULT-III
and listen to operating sound.
Fuel pump relay makes the operat-
ing sound.
• Harness and connectors
• Fuel pump relay
PURG VOL CONT/V
• Engine: After warming up, run en-
gine at 1,500 rpm.
• Change the EVAP canister purge
volume control solenoid valve
opening percent using CON-
SULT-III.
Engine speed changes according
to the opening percent.
• Harness and connectors
• Solenoid valve
V/T ASSIGN ANGLE
• Engine: Return to the original
trouble condition
• Change intake valve timing using
CONSULT-III.
If trouble symptom disappears, see
CHECK ITEM.
• Harness and connectors
• Intake valve timing control sole-
noid valve
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-437
< COMPONENT DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
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COMPONENT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Description
INFOID:0000000001096776
The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in “SPEC”
of “DATA MONITOR” mode is within the SP value, the Engine Control System is confirmed OK. When the
value in “SPEC” of “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have
one or more malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not light the
MI.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc-
tion)
• A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Component Function Check
INFOID:0000000001096777
1.
START
Make sure that all of the following conditions are satisfied.
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (0.983 - 1.043 bar, 1.003 - 1.064 kg/cm
2
, 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30
°
C (68 - 86
°
F)
• Engine coolant temperature: 75 - 95
°
C (167 - 203
°
F)
• Transmission: Warmed-up
- After the engine is warmed up to normal operating temperature, drive vehicle for 5 minutes.
• Electrical load: Not applied*
• Engine speed: Idle
*: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
>> GO TO 2.
2.
PERFORM “SPEC” OF “DATA MONITOR” MODE
With CONSULT-III
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1.
EC-365, "BASIC INSPECTION : Special Repair Requirement"
.
2.
Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode
with CONSULT-III.
3.
Make sure that monitor items are within the SP value.
Is the inspection result normal?
YES
>> END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000001096778
EC-438
< COMPONENT DIAGNOSIS >
[HR16DE (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
OVERALL SEQUENCE
PBIB2384E
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