Content .. 382 383 384 385 ..

Nissan Qashqai (2007-2010). Manual - part 384

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-1055

< FUNCTION DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

AIR COND SIG

ON/OFF

• Indicates [ON/OFF] condition of the air condition-

er switch as determined by the air conditioner sig-
nal.

P/N POSI SW

ON/OFF

• Indicates [ON/OFF] condition from the park/neu-

tral position (PNP) switch signal.

PW/ST SIGNAL

ON/OFF

• [ON/OFF] condition of the power steering system

(determined by the signal voltage of the power
steering pressure sensor) is indicated.

LOAD SIGNAL

ON/OFF

• Indicates [ON/OFF] condition from the electrical

load signal.
ON: Rear window defogger switch is ON and/or
lighting switch is in 2nd position.
OFF: Both rear window defogger switch and light-
ing switch are OFF.

IGNITION SW

ON/OFF

• Indicates [ON/OFF] condition from ignition switch

signal.

HEATER FAN SW

ON/OFF

• Indicates [ON/OFF] condition from the heater fan

switch signal.

BRAKE SW

ON/OFF

• Indicates [ON/OFF] condition from the stop lamp

switch signal.

INJ PULSE-B1

msec

• Indicates the actual fuel injection pulse width

compensated by ECM according to the input sig-
nals.

• When the engine is stopped, a certain

computed value is indicated.

IGN TIMING

BTDC

• Indicates the ignition timing computed by ECM

according to the input signals.

• When the engine is stopped, a certain

value is indicated.

PURG VOL C/V

• Indicates the EVAP canister purge volume con-

trol solenoid valve control value computed by the
ECM according to the input signals.

• The opening becomes larger as the value in-

creases.

INT/V TIM (B1)

• Indicates [

CA] of intake camshaft advance an-

gle.

INT/V SOL-B1

• The control value of the intake valve timing con-

trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.

• The advance angle becomes larger as the value

increases.

AIR COND RLY

ON/OFF

• The air conditioner relay control condition (deter-

mined by ECM according to the input signals) is
indicated.

FUEL PUMP RLY

ON/OFF

• Indicates the fuel pump relay control condition

determined by ECM according to the input sig-
nals.

THRTL RELAY

ON/OFF

• Indicates the throttle control motor relay control

condition determined by the ECM according to
the input signals.

COOLING FAN

HI/LOW/OFF

• Indicates the condition of the cooling fan (deter-

mined by ECM according to the input signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop

HO2S1 HTR (B1)

ON/OFF

• Indicates [ON/OFF] condition of heated oxygen

sensor 1 heater determined by ECM accordining
to the input signals.

HO2S2 HTR (B1)

ON/OFF

• Indicates [ON/OFF] condition of heated oxygen

sensor 2 heater determined by ECM according to
the input signals.

Monitored item

Unit

Description

Remarks

EC-1056

< FUNCTION DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

VEHICLE SPEED

km/h or mph

• The vehicle speed computed from the vehicle

speed signal sent from TCM is displayed.

IDL A/V LEARN

YET/CMPLT

• Display the condition of Idle Air Volume Learning

YET: Idle air volume learning has not been per-
formed yet.
CMPLT: Idle air volume learning has already
been performed successfully.

02SEN HTR DTY

• Indicates the heated oxygen sensor 1 heater con-

trol value computed by the ECM according to the
input signals.

AC PRESS SEN

• 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.

AT OD MONITOR

ON/OFF

• Indicates [ON/OFF] condition of CVT according

to the input signal from the TCM.

• For M/T models, always “OFF” is dis-

played.

AT OD CANCEL

ON/OFF

• Indicates [ON/OFF] condition of CVT cancel re-

quest signal.

• For M/T models, always “OFF” is dis-

played.

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

• 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

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-1057

< FUNCTION DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

NOTE:

Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

ACTIVE TEST MODE

Test Item

*: 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 Learning.

POWER BALANCE

• Engine: After warming up, idle

the engine.

• A/C switch OFF
• Shift lever: P or N (CVT), Neutral

(M/T)

• 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 sen-

sor

• 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

engine at 1,500 rpm.

• Change the EVAP canister

purge volume control solenoid
valve opening percent using
CONSULT-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 us-

ing CONSULT-III.

If trouble symptom disappears, see
CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

EC-1058

< COMPONENT DIAGNOSIS >

[MR20DE (WITHOUT EURO-OBD)]

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

COMPONENT DIAGNOSIS

TROUBLE DIAGNOSIS - SPECIFICATION VALUE

Description

INFOID:0000000001094085

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:0000000001094086

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

, 14.25 - 15.12 psi)

• Atmospheric temperature: 20 - 30

C (68 - 86

• Engine coolant temperature: 75 - 95

C (167 - 203

• Transmission: Warmed-up
- CVT models: After the engine is warmed up to normal operating temperature, drive vehicle until “FLUID

TEMP SE” (CVT fluid temperature sensor signal) indicates more than 60

C (140

F).

- M/T models: 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.

PERFORM “SPEC” OF “DATA MONITOR” MODE

With CONSULT-III

NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1.

Perform

EC-986, "BASIC INSPECTION : Special Repair Requirement"

Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode
with CONSULT-III.

Make sure that monitor items are within the SP value.

Is the inspection result normal?

YES

>> END

>> Go to

EC-1061, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000001094087

Content .. 382 383 384 385 ..