Infiniti I35 (A33). Manual — part 197
![](/vehicles/zatt/ltherawowha/yose/goteno.png)
SYSTEM — ENGINE MECHANICAL & OTHER
NHEC0041S02
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
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)
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-129
![](/vehicles/zatt/ltherawowha/yose/les.png)
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 timing control
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.
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-130
![](/vehicles/zatt/ltherawowha/yose/aseeani.png)
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-90 or EL
section
1 - 6: The numbers refer to the order of inspection.
CONSULT-II Reference Value in Data Monitor
Mode
NHEC1426
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.
MONITOR ITEM
CONDITION
SPECIFICATION
ENG SPEED
I
Run engine and compare CONSULT-II value with the tachometer indi-
cation.
Almost the same speed as
the tachometer indication.
MAS A/F SE-B1
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: N
I
No-load
Idle
1.1 - 1.5V
2,500 rpm
1.7 - 2.4V
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
Warm-up condition
I
After keeping engine speed
between 3,500 and 4,000 rpm
for 1 minute and at idle for 1
minute under no load
Revving engine from idle up to 3,000
rpm quickly
0 - 0.3V
+,
Approx. 0.6 -
1.0V
HO2S2 MNTR (B1)
HO2S2 MNTR (B2)
LEAN
+,
RICH
VEH SPEED SE
I
Turn drive wheels and compare CONSULT-II value with the speedom-
eter indication
Almost the same speed as
the speedometer indication
BATTERY VOLT
I
Ignition switch: ON (Engine stopped)
11 - 14V
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-131
![](/vehicles/zatt/ltherawowha/yose/layone.png)
MONITOR ITEM
CONDITION
SPECIFICATION
ACCEL SEN 1
I
Ignition switch: ON
(Engine stopped)
I
Shift lever: D
Accelerator pedal: Released
0.41 - 0.71V
Accelerator pedal: Fully depressed
More than 3.7V
ACCEL SEN 2*
I
Ignition switch: ON
(Engine stopped)
I
Shift lever: D
Accelerator pedal: Released
0.15 - 0.97V
Accelerator pedal: Fully depressed
More than 3.5V
THRTL SEN 1
THRTL SEN 2*
I
Ignition switch: ON
(Engine stopped)
I
Shift lever: D
Accelerator pedal: Released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
START SIGNAL
I
Ignition switch: ON
,
START
,
ON
OFF
,
ON
,
OFF
CLSD THL POS
I
Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
I
Engine: After warming up, idle
the engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.)
ON
P/N POSI SW
I
Ignition switch: ON
Shift lever: P or N
ON
Except above
OFF
PW/ST SIGNAL
I
Engine: After warming up, idle
the engine
Steering wheel in neutral position
(forward direction)
OFF
The steering wheel is turned
ON
IGNITION SW
I
Ignition switch: ON
,
OFF
,
ON
ON
,
OFF
,
ON
INJ PULSE-B1
INJ PULSE-B2
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: N
I
No-load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
B/FUEL SCHDL
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: N
I
No-load
Idle
2.3 - 2.9 msec
2,000 rpm
2.3 - 2.9 msec
IGN TIMING
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: N
I
No-load
Idle
13 - 18° BTDC
2,000 rpm
25 - 45° BTDC
LOAD SIGNAL
I
Ignition switch: ON
Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF.
OFF
PURG VOL C/V
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: N
I
No-load
Idle
0 %
2,000 rpm
—
A/F ALPHA-B1
A/F ALPHA-B2
I
Engine: After warming up
Maintaining engine speed at 2,000
rpm
54 - 155%
EVAP SYS PRES
I
Ignition switch: ON
Approx. 3.4V
AIR COND RLY
I
Air conditioner switch: OFF
,
ON
OFF
,
ON
FUEL PUMP RLY
I
Ignition switch is turned to ON (Operates for 1 seconds)
I
Engine running or cranking
ON
Except as shown above
OFF
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-132
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