2007 NISSAN 350Z fuel pump

EC-90
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z

When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when
there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands
the driver to repair the malfunction.
Symptom Matrix ChartNBS0003G
SYSTEM — BASIC ENGINE CONTROL SYSTEM
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 11232 22 3 2EC-691
Fuel pressure regulator system334444444 4EC-80
Fuel injector circuit 11232 22 2EC-686
Evaporative emission system 334444444 4EC-33
Air Positive crankcase ventilation sys-
tem
334444444 41EC-44
Incorrect idle speed adjustment 1 1 1 1 1EC-71
Electric throttle control actuator 112332222 2 2EC-561,
EC-580
IgnitionIncorrect ignition timing adjustment33111 11 1EC-71
Ignition circuit 11222 22 2EC-698
Power supply and ground circuit22333 33 23EC-142

TROUBLE DIAGNOSIS
EC-93
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EC
Revision: 2006 November2007 350Z
1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-53
CamshaftEM-72
Intake valve timing controlEM-53
Exhaust valve timing controlEM-53
Intake valve
3EM-89
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-22
, EX-
3Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 5EM-26
, LU-
10 , LU-9
Oil level (Low)/Filthy oilLU-6
Cooling
Radiator/Hose/Radiator filler cap
55555 55 45CO-13,
CO-17
Thermostat 5CO-26
Water pumpCO-23
Water galleryCO-28
Cooling fan 5CO-21
Coolant level (Low)/Contami-
nated coolantCO-10
NVIS (NISSAN Vehicle Immobilizer System —
NATS)11EC-46 or
BL-150
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-98
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
1. Fuel level sensor unit and fuel pump
harness connector2. Fuel level sensor unit and fuel pump 3. Fuel pressure regurator
4. Fuel tank temperature sensor
:Vehicle front
PBIB1907E
1. A/F sensor 1 (bank 1) harness con-
nector2. A/F sensor 1 (bank 2) harness con-
nector
:Vehicle front
1. A/F sensor 1 (bank 1) 2. A/F sensor 1 (bank 2)
:Vehicle front
PBIB3516E
PBIB3517E

EC-106
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
21 GY/REVAP canister purge vol-
ume control solenoid valve[Engine is running]

Idle speed

Accelerator pedal: Not depressed even
slightly, after engine starting.BATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Engine speed: About 2,000 rpm (More than
100 seconds after starting engine)BATTERY VOLTAGE
(11 - 14V)
22 L/W Fuel pump relay[Ignition switch: ON]

For 1 second after turning ignition switch ON
[Engine is running]0 - 1.5V
[Ignition switch: ON]

More than 1 second after turning ignition
switch ON.BATTERY VOLTAGE
(11 - 14V)
24 BR/YECM relay
(Self shut-off)[Engine is running]
[Ignition switch: OFF]

For a few seconds after turning ignition
switch OFF0 - 1.5V
[Ignition switch: OFF]

More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
25 OR Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
29 G/WIntake valve timing control
solenoid valve (bank 2)[Engine is running]

Warm-up condition

Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

Engine speed: 2,000 rpm7 - 12V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB3547E
PBIB3548E
PBIB3546E

EC-118
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
X: Applicable
*1: This item includes 1st trip DTCs.
*2: This mode includes 1st trip freeze frame data or freeze frame data. The items appear on CONSULT-III screen in freeze frame data
mode only if a 1st trip DTC or DTC is detected. For details, refer to EC-119, "
Freeze Frame Data and 1st Trip Freeze Frame Data" .
*3: Always “CMPLT” is displayed.
INSPECTION PROCEDURE
Refer to GI-36, "CONSULT-III/GST CHECKING SYSTEM" .
WORK SUPPORT MODE
Work Item
ENGINE CONTROL COMPONENT PARTS
OUTPUT
Fuel injector××
Power transistor (Ignition timing)××
Throttle control motor relay××
Throttle control motor×
EVAP canister purge volume control
solenoid valve××××
Air conditioner relay×
Fuel pump relay×××
Cooling fan relay×××
Air fuel ratio (A/F) sensor 1 heater××
×*
3
Heated oxygen sensor 2 heater××
×*3
EVAP canister vent control valve×× ××
Intake valve timing control solenoid
valve×××
Exhaust valve timing control magnet
retarder×× ××
Calculated load value×× ItemDIAGNOSTIC TEST MODE
WORK
SUPPORTSELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TORACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*
1FREEZE
FRAME
DATA*
2
SRT STA-
TUSDTC
WORK
SUP-
PORT
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE

FUEL PUMP WILL STOP BY TOUCHING START DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.When releasing fuel pressure
from fuel line
IDLE AIR VOL LEARN

THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.When learning the idle air volume
SELF-LEARNING CONT

THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT.When clearing the coefficient of
self-learning control value

EC-122
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
INT/V SOL(B1) [%]
The control value of the intake valve timing control
solenoid valve (determined by ECM according to the
input signals) is indicated.

The advance angle becomes larger as the value
increases. INT/V SOL(B2) [%]
EX VTC DTY B1 [%]

The control value of the exhaust valve timing control
magnet retarder (determined by ECM according to the
input signals) is indicated.

The retard angle becomes larger as the value
increases. EX VTC DTY B2 [%]
TP SEN 1-B2 [V]

The throttle position sensor signal voltage is dis-
played.
THRTL SEN 2-B2 signal is converted by ECM
internally. Thus, it differs from ECM terminal
voltage signal. TP SEN 2-B2 [V]
AIR COND RLY [ON/
OFF]

The air conditioner relay control condition (determined
by ECM according to the input signals) is indicated.
FUEL PUMP RLY [ON/
OFF]

Indicates the fuel pump relay control condition deter-
mined by ECM according to the input signals.
VENT CONT/V [ON/
OFF]

The control condition of the EVAP canister vent control
valve (determined by ECM according to the input sig-
nals) is indicated.
ON: Closed
OFF: Open
THRTL RELAY [ON/
OFF]

Indicates the throttle control motor relay control condi-
tion determined by the ECM according to the input sig-
nals.
COOLING FAN
[HI/LOW/OFF]

The control condition of the cooling fan (determined by
ECM according to the input signals) is indicated.
HI: High speed operation
LOW: Low speed operation
OFF: Stop
HO2S2 HTR (B1) [ON/
OFF]

Indicates [ON/OFF] condition of heated oxygen sensor
2 heater determined by ECM according to the input
signals. HO2S2 HTR (B2) [ON/
OFF]
I/P PULLY SPD
[rpm]

Indicates the engine speed computed from the turbine
revolution sensor signal.
VEHICLE SPEED
[km/h] or [mph]

Indicates the vehicle speed computed from the revolu-
tion sensor signal.
IDL A/V LEARN [YET/
CMPLT]

Display the condition of Idle Air Volume Learning
YET: Idle Air Volume Learning has not been performed
yet.
CMPLT: Idle Air Volume Learning has already been
performed successfully.
TRVL AFTER MIL [km]
or [mile]

Distance traveled while MIL is activated.
ENG OIL TEMP [°C] or
[°F]

The engine oil temperature (determined by the signal
voltage of the engine oil temperature sensor) is dis-
played.
A/F S1 HTR(B1) [%]

Indicates A/F sensor 1 heater control value computed
by ECM according to the input signals.

The current flow to the heater becomes larger as the
value increases. A/F S1 HTR(B2) [%]
AC PRESS SEN [V]

The signal voltage from the refrigerant pressure sen-
sor is displayed. Monitored item [Unit] Description Remarks

EC-124
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
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 INJEC-
TION

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

Air fuel ratio (A/F) sensor 1
IGNITION TIM-
ING

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 BAL-
ANCE

Engine: After warming up, idle
the engine.

A/C switch OFF

Shift lever: P or N (A/T), 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 “HI”, “LOW”
and “OFF” using CONSULT-III.Cooling fan moves and stops.

Harness and connectors

Cooling fan motor

IPDM E/R
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 CON-
SULT-III.Engine speed changes according to
the opening percent.
Harness and connectors

Solenoid valve
FUEL/T TEMP
SEN

Change the fuel tank temperature using CONSULT-III.
VENT CON-
TROL/V

Ignition switch: ON
(Engine stopped)

Turn solenoid valve “ON” and
“OFF” with the CONSULT-III and
listen to operating sound.Solenoid valve makes an operating
sound.
Harness and connectors

Solenoid valve
INT 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
EXH V/T ASSIGN
ANGLE

Engine: Return to the original
trouble condition

Change exhaust valve timing
using CONSULT-III.If trouble symptom disappears, see
CHECK ITEM.

Harness and connectors

Exhaust valve timing control mag-
net retarder

TROUBLE DIAGNOSIS
EC-129
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EC
Revision: 2006 November2007 350Z
INT/V TIM(B1)
INT/V TIM(B2)

Engine: After warming up

Shift lever: P or N (A/T), Neutral
(M/T) position

Air conditioner switch: OFF

No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 30°CA
EXH/V TIM B1
EXH/V TIM B2

Engine: After warming up

Shift lever: P or N (A/T), Neutral
(M/T) position

Air conditioner switch: OFF

No loadIdle−5° - 5°CA
Around 2,500 rpm while the engine
speed is risingApprox. 0° - 30°CA
INT/V SOL(B1)
INT/V SOL(B2)

Engine: After warming up

Shift lever: P or N (A/T), Neutral
(M/T) position

Air conditioner switch: OFF

No loadIdle 0% - 2%
2,000 rpm Approx. 0% - 50%
EX VTC DTY B1
EX VTC DTY B2

Engine: After warming up

Shift lever: P or N (A/T), Neutral
(M/T) position

Air conditioner switch: OFF

No loadIdle 0% - 2%
Around 2,500 rpm while the engine
speed is risingApprox. 0% - 70%
TP SEN 1-B2
TP SEN 2-B2*
1

Ignition switch: ON
(Engine stopped)

Shift lever: D (A/T) or 1st (M/T)
positionAccelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
AIR COND RLY

Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates)ON
FUEL PUMP RLY

For 1 second after turning ignition switch ON

Engine running or crankingON

Except above conditions OFF
VENT CONT/V

Ignition switch: ON OFF
THRTL RELAY

Ignition switch: ON ON
COOLING FAN

Engine: After warming up, idle
the engine

Air conditioner switch: OFFEngine coolant temperature is 97°C
(206°F) or lessOFF
Engine coolant temperature is between
98°C (208°F) and 99°C (210°F)LOW
Engine coolant temperature is 100°C
(212°F) or moreHI
HO2S2 HTR (B1)
HO2S2 HTR (B2)

Engine speed: Below 3,600 rpm after the following conditions are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and
at idle for 1 minute under no loadON

Engine speed: Above 3,600 rpm OFF
I/P PULLY SPD

Vehicle speed: More than 20 km/h (12 MPH)Almost the same speed as the
tachometer indication
VEHICLE SPEED

Turn drive wheels and compare CONSULT-III value with the speedometer
indication.Almost the same speed as the
speedometer indication MONITOR ITEM CONDITION SPECIFICATION