Nissan Qashqai (2007-2010). Manual — part 361
ECM
EC-963
< ECU DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
• Sea level
• Flat road
• Ambient air temperature: 20 - 30
°
C (68 - 86
°
F)
• Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30
°
C (68 - 86
°
F)], diagno-
sis may also be performed.
Pattern 1:
• The engine is started at the engine coolant temperature of
−
10 to 35
°
C (14 to 95
°
F)
(where the voltage between the ECM terminal 46 and ground is 3.0 - 4.3V).
• The engine must be operated at idle speed until the engine coolant temperature is greater than 70
°
C
(158
°
F) (where the voltage between the ECM terminal 46 and ground is lower than 1.4V).
• The engine is started at the fuel tank temperature of warmer than 0
°
C (32
°
F) (where the voltage
between the ECM terminal 95 and ground is less than 4.1V).
Pattern 2:
• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
Test Value and Test Limit
INFOID:0000000000936977
The following is the information specified in Service $06 of SAE J1979.
The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.
SRT item
Self-diagnostic test item
DTC
Test value
(GST display)
Test limit
TID
CID
CATALYST
Three way catalyst function
P0420
01H
01H
Max.
P0420
02H
81H
Min.
HO2S
Heated oxygen sensor 1
P0133
09H
04H
Max.
P1143
0AH
84H
Min.
P1144
0BH
04H
Max.
P0132
0CH
04H
Max.
P0134
0DH
04H
Max.
Heated oxygen sensor 2
P0139
19H
86H
Min.
P1147
1AH
86H
Min.
P1146
1BH
06H
Max.
P0138
1CH
06H
Max.
HO2S HTR
Heated oxygen sensor 1 heater
P0135
29H
08H
Max.
2AH
88H
Min.
Heated oxygen sensor 2 heater
P0141
2DH
0AH
Max.
2EH
8AH
Min.
EC-964
< SYMPTOM DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM
SYMPTOM DIAGNOSIS
ENGINE CONTROL SYSTEM
Symptom Table
INFOID:0000000000936978
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO ST
AR
T
/REST
AR
T
(EXCP
.
H
A
)
ENGINE ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK KNOCK/DET
O
NA
TION
LACK
OF POWER/
POOR
ACC
E
LERA
TION
HIGH IDL
E
/LOW
IDLE
ROUG
H IDLE/HUNTING
IDLI
NG VIBRA
T
ION
SLOW/NO RETURN T
O
IDLE
OVERHEA
T
S/W
A
TER TEMPERA
T
UR
E
HIGH
EXCESS
IVE F
U
E
L
CONSUMP
T
IO
N
EXCESS
IVE OIL CONSUMP
T
ION
BA
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
Fuel
Fuel pump circuit
1
1
2
3
2
2
2
3
2
Fuel pressure regulator system
3
3
4
4
4
4
4
4
4
4
Fuel injector circuit
1
1
2
3
2
2
2
2
Evaporative emission system
3
3
4
4
4
4
4
4
4
4
Air
Positive crankcase ventilation sys-
tem
3
3
4
4
4
4
4
4
4
4
1
Incorrect idle speed adjustment
1
1
1
1
1
Electric throttle control actuator
1
1
2
3
3
2
2
2
2
2
2
,
Ignition
Incorrect ignition timing adjustment
3
3
1
1
1
1
1
1
Ignition circuit
1
1
2
2
2
2
2
2
Main power supply and ground circuit
2
2
3
3
3
3
3
2
3
Mass air flow sensor circuit
1
1
2
2
2
2
2
2
Engine coolant temperature sensor circuit
3
3
3
Heated oxygen sensor 1 circuit
,
,
,
,
Throttle position sensor circuit
2
2
,
,
,
,
Accelerator pedal position sensor circuit
3
2
1
,
,
Knock sensor circuit
2
3
Crankshaft position sensor (POS) circuit
2
2
ENGINE CONTROL SYSTEM
EC-965
< SYMPTOM DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
Camshaft position sensor (PHASE) circuit
3
2
Vehicle speed signal circuit
2
3
3
3
ECM
2
2
3
3
3
3
3
3
3
3
3
Intake valve timing control solenoid valve cir-
cuit
3
2
1
3
2
2
3
3
PNP switch circuit
3
3
3
3
3
Refrigerant pressure sensor circuit
2
3
3
4
Electrical load signal circuit
3
Air conditioner circuit
2
2
3
3
3
3
3
3
3
3
2
ABS actuator and electric unit (control unit)
4
SYMPTOM
Reference
page
HARD/NO S
T
A
R
T/RES
T
A
R
T (E
XCP
. HA)
E
N
GINE
ST
ALL
HES
IT
A
TION/SURGING/FLA
T
SPOT
S
P
ARK KNOC
K
/DET
O
NA
TI
ON
LACK OF
POWER/POOR ACCELERA
TION
HIG
H
IDL
E
/L
OW
ID
LE
ROUGH IDLE/HUNTING
ID
LING VI
BRA
T
ION
S
L
OW/NO RETU
RN
T
O
ID
LE
OVERHEA
T
S
/W
A
TER TEMPERA
T
URE HIG
H
E
X
CESSIVE
FUEL CON
S
UMP
T
ION
E
X
CESSIVE
OIL
C
O
NSUMP
T
ION
B
A
TTER
Y
DEAD (UNDER CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
EC-966
< SYMPTOM DIAGNOSIS >
[MR20DE (WITH EURO-OBD)]
ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO ST
AR
T/REST
AR
T (EXCP
.
HA)
E
N
GI
N
E
ST
AL
L
HESIT
A
TION/S
U
R
GING/F
LA
T SP
OT
SP
ARK KNOCK/DE
T
O
NA
TION
LACK OF POWE
R/POOR
ACCELERA
TIO
N
HIGH IDL
E
/L
OW
IDL
E
ROUG
H IDLE/HU
N
TING
IDL
ING VIBRA
T
ION
SLO
W
/NO RETURN T
O
IDLE
OVERHEA
T
S/W
A
TE
R
TEMPERA
T
URE
HIGH
EXCES
SIVE F
U
EL CONSUMP
T
ION
EXCES
SIVE OI
L CONSUMP
T
IO
N
BA
TTE
R
Y
DEAD (UN
D
E
R
CH
A
R
GE)
Warranty symptom code
A
A
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
Fuel
Fuel tank
5
5
Fuel piping
5
5
5
5
5
5
Vapor lock
—
Valve deposit
5
5
5
5
5
5
5
—
Poor fuel (Heavy weight gasoline,
Low octane)
—
Air
Air duct
5
5
5
5
5
5
Air cleaner
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5
5
5
5
Electric throttle control actuator
Air leakage from intake manifold/
Collector/Gasket
Cranking
Battery
1
1
1
1
1
1
1
1
Generator circuit
Starter circuit
3
Signal plate
6
,
PNP switch
4
or
Engine
Cylinder head
5
5
5
5
5
5
5
5
Cylinder head gasket
4
3
Cylinder block
6
6
6
6
6
6
6
6
4
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
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