Infiniti QX4 (R50). Manual — part 163
SYMPTOM
Reference
page
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
Engine
control
Crankshaft position sensor (REF)
circuit
2
2
Crankshaft position sensor (POS)
circuit
Camshaft position sensor
(PHASE) circuit
3
Mass air flow sensor circuit
1
1
2
2
2
2
2
2
Heated oxygen sensor 1 (front)
circuit
3
Engine coolant temperature sen-
sor circuit
1
3
3
Throttle position sensor circuit
2
2
Incorrect throttle position sensor
adjustment
3
1
1
1
1
1
1
1
Vehicle speed sensor circuit
2
3
3
3
Knock sensor circuit
2
ECM
2
2
3
3
3
3
3
3
3
3
Start signal circuit
2
Park/Neutral position switch circuit
3
3
3
3
3
Power steering oil pressure switch
circuit
2
Electrical load signal circuit
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-119
SYSTEM — ENGINE MECHANICAL & OTHER
NBEC0041S02
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
Fuel
Fuel tank
5
5
FE section
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 — throttle
body)
5
5
5
5
Throttle body, Throttle wire
FE section
Air leakage from intake manifold/
Collector/Gasket
—
Cranking
Battery
1
1
1
1
1
1
1
1
EL section
Alternator circuit
Starter circuit
3
Flywheel/Drive plate
6
EM section
PNP switch
4
AT section
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-120
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
Engine
Cylinder head
5
5
5
5
5
5
5
5
EM section
Cylinder head gasket
4
3
Cylinder block
6
6
6
6
6
6
6
6
4
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mechanism
Timing chain
5
5
5
5
5
5
5
5
Camshaft
Intake valve
3
Exhaust valve
Exhaust
Exhaust manifold/Tube/Muffler/
Gasket
5
5
5
5
5
5
5
5
FE section
Three way catalyst
Lubrication
Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
5
5
5
5
5
5
5
5
MA, EM, LC
section
Oil level (Low)/Filthy oil
LC section
Cooling
Radiator/Hose/Radiator filler cap
5
5
5
5
5
5
5
4
5
Thermostat
5
Water pump
Water gallery
Coolant level (low)/Contaminated
coolant
MA section
1 - 6: The numbers refer to the order of inspection.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-121
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
IVIS (INFINITI Vehicle Immobilizer System —
NATS)
1
1
EC-74 or EL
section
1 - 6: The numbers refer to the order of inspection.
CONSULT-II Reference Value in Data Monitor
Mode
NBEC0042
Remarks:
I
Specification data are reference values.
I
Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
I
If the real-time diagnosis results are NG and the on board diagnostic system results are OK when diagnosing the mass air flow sensor,
first check to see if the fuel pump control circuit is normal.
MONITOR ITEM
CONDITION
SPECIFICATION
ENG SPEED
CKPS·RPM (POS)
I
Tachometer: Connect
I
Run engine and compare tachometer indication with the CONSULT-II
value.
Almost the same speed as
the CONSULT-II value.
POS COUNT
I
Engine: Running
179 - 181
MAS A/F SE-B1
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
1.2 - 1.8V
2,500 rpm
1.6 - 2.2V
COOLAN TEMP/S
I
Engine: After warming up
More than 70°C (158°F)
HO2S1 (B1)
HO2S1 (B2)
I
Engine: After warming up
Maintaining engine speed at 2,000
rpm
0 - 0.3V
+,
Approx. 0.6 -
1.0V
HO2S1 MNTR (B1)
HO2S1 MNTR (B2)
LEAN
+,
RICH
Changes more than 5 times
during 10 seconds.
HO2S2 (B1)
HO2S2 (B2)
I
Engine: After warming up
Maintaining engine speed at 2,000
rpm
0 - 0.3V
+,
Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
HO2S2 MNTR (B2)
LEAN
+,
RICH
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-122
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст