2007 NISSAN 350Z Neutral position switch

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Revision: 2006 November2007 350Z
Fail-safe ChartNBS0003F
When the DTC listed below is detected, the ECM enters fail-safe mode and the MIL lights up.
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103
P010C
P010DMass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning
ignition switch ON or START.
CONSULT-III displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned
ON or START40°C (104°F)
More than approx. 4 minutes after
ignition ON or START80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P0227
P0228
P1239
P2132
P2133
P2135Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1233
P2101Electric throttle control
functionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1236
P2118Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1238
P2119Electric throttle control
actuator(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
The engine can restart in N or P (A/T), Neutral (M/T) position, and engine speed will not
exceed 1,000 rpm or more.
P1290
P2100
P2103Throttle control motor relay
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2122
P2123
P2127
P2128
P2138Accelerator pedal position
sensorThe ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
1 - 6: The numbers refer to the order of inspection.
(continued on next page)Mass air flow sensor circuit
1
122
222 2EC-197
,
EC-208
Engine coolant temperature sensor circuit
333EC-223,
EC-239
Air fuel ratio (A/F) sensor 1 circuitEC-165
,
EC-248
,
EC-257
,
EC-266
,
EC-275
,
EC-659
Throttle position sensor circuit
22EC-229
,
EC-361
,
EC-557
,
EC-559
,
EC-582
Accelerator pedal position sensor circuit 3 2 1EC-514
,
EC-633
,
EC-641
,
EC-650
Knock sensor circuit 2 3EC-379
Crankshaft position sensor (POS) circuit 2 2EC-386
Camshaft position sensor (PHASE) circuit 3 2EC-394
Vehicle speed signal circuit 2 3 3 3EC-496
Power steering pressure sensor circuit 2 3 3EC-502
ECM 22333333333EC-508,
EC-512
Intake valve timing control solenoid valve cir-
cuit32 13223 3EC-183
Exhaust valve timing control magnet retarder
circuit32 13223 3EC-160
Park/neutral position (PNP) switch circuit 3 3 3 3 3EC-520
Refrigerant pressure sensor circuit 2 3 3 4EC-710
Electrical load signal circuit 3EC-684
Air conditioner circuit223333333 3 2AT C - 3 3
VDC/TCS/ABS control unit
ABS actuator and electric unit (control unit)4BRC-82,
BRC-42
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-92
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
SYSTEM — ENGINE MECHANICAL & OTHER
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 tank
5
5FL-10
Fuel piping 5 5 5 5 5 5EM-34
Vapor lock—
Valve deposit
5 555 55 5—
Poor fuel (Heavy weight gaso-
line, Low octane)—
Air Air duct
55555 5EM-15
Air cleanerEM-15
Air leakage from air duct
(Mass air flow sensor — electric
throttle control actuator)
5555EM-15
Electric throttle control actuatorEM-17
Air leakage from intake manifold/
Collector/GasketEM-17,
EM-20
Cranking Battery
111111
11SC-4
Generator circuitSC-20
Starter circuit 3SC-8
Signal plate 6EM-107
Park/neutral position (PNP)
switch4MT-11 or
AT- 1 0 2
Engine Cylinder head
55555 55 5EM-89
Cylinder head gasket 4 3
Cylinder block
66666 66 64
EM-107
Piston
Piston ring
Connecting rod
Bearing
Crankshaft

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Revision: 2006 November2007 350Z
98 SBAccelerator pedal position
sensor 2[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released1.95 - 2.40V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed2.0 - 2.5V
99 LSensor power supply
(Accelerator pedal position
sensor 1)[Ignition switch: ON]5V
100 WSensor ground
(Accelerator pedal position
sensor 1)[Engine is running]

Warm-up condition

Idle speed0V
101 G/Y ASCD steering switch[Ignition switch: ON]

ASCD steering switch: OFF4V
[Ignition switch: ON]

MAIN switch: Pressed0V
[Ignition switch: ON]

CANCEL switch: Pressed1V
[Ignition switch: ON]

RESUME/ACCELERATE switch: Pressed3V
[Ignition switch: ON]

SET/COAST switch: Pressed2V
102 LGEVAP control system pres-
sure sensor[Ignition switch: ON]1.8 - 4.8V
103 GSensor power supply
(Accelerator pedal position
sensor 2)[Ignition switch: ON]5V
104 GYSensor ground
(Accelerator pedal position
sensor 2)[Engine is running]

Warm-up condition

Idle speed0V
105 L Refrigerant pressure sensor[Engine is running]

Warm-up condition

Both A/C switch and blower switch: ON
(Compressor operates.)1.0 - 4.0V
106 WFuel tank temperature sen-
sor[Engine is running]0 - 4.8V
Output voltage varies with fuel
tank temperature.
107 BRSensor power supply
(EVAP control system pres-
sure sensor)[Ignition switch: ON]5V
108 B/YSensor ground
(ASCD steering switch)[Engine is running]

Warm-up condition

Idle speed0V
109 BR PNP switch[Ignition switch: ON]

Shift lever: P or N (A/T), Neutral (M/T) posi-
tionBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Shift lever: Except above position0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)

TROUBLE DIAGNOSIS
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Revision: 2006 November2007 350Z
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
WORK
SUPPORTSELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TORACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*1FREEZE
FRAME
DATA*
2
SRT STA-
TUSDTC
WORK
SUP-
PORT
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)×××
Camshaft position sensor (PHASE)×××
Mass air flow sensor××
Engine coolant temperature sensor××××
Engine oil temperature sensor×
Air Fuel ratio (A/F) sensor 1××××
Heated oxygen sensor 2××××
Vehicle speed sensor×××
Accelerator pedal position sensor××
Throttle position sensor×××
Fuel tank temperature sensor×××
EVAP control system pressure sensor××
Intake air temperature sensor×××
Knock sensor×
Refrigerant pressure sensor×
Closed throttle position switch (accel-
erator pedal position sensor signal)×
Air conditioner switch×
Park/neutral position (PNP) switch××
Stop lamp switch××
Power steering pressure sensor××
Battery voltage×
Load signal×
Exhaust valve timing control position
sensor××
Fuel level sensor××
ASCD steering switch××
ASCD brake switch××
ASCD clutch switch××

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Revision: 2006 November2007 350Z
TP SEN 1-B1 [V]
The throttle position sensor signal voltage is dis-
played.
THRTL SEN 2-B1 signal is converted by ECM
internally. Thus, it differs from ECM terminal
voltage signal. TP SEN 2-B1 [V]
FUEL T/TMP SE [°C]
or [°F]

The fuel temperature (determined by the signal volt-
age of the fuel tank temperature sensor) is displayed.
INT/A TEMP SE [°C] or
[°F]

The intake air temperature (determined by the signal
voltage of the intake air temperature sensor) is indi-
cated.
EVAP SYS PRES [V]

The signal voltage of EVAP control system pressure
sensor is displayed.
FUEL LEVEL SE [V]

The signal voltage of the fuel level sensor is displayed.
START SIGNAL [ON/
OFF]

Indicates start signal status [ON/OFF] computed by
the ECM according to the signals of engine speed and
battery voltage.
After starting the engine, [OFF] is displayed
regardless of the starter signal.
CLSD THL POS [ON/
OFF]

Indicates idle position [ON/OFF] computed by ECM
according to the accelerator pedal position sensor sig-
nal.
AIR COND SIG [ON/
OFF]

Indicates [ON/OFF] condition of the air conditioner
switch as determined by the air conditioner signal.
P/N POSI SW
[ON/OFF]

Indicates [ON/OFF] condition from the park/neutral
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 steer-
ing 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 light-
ing switch is in 2nd position.
OFF: Both rear window defogger switch and lighting
switch are OFF.
IGNITION SW
[ON/OFF]

Indicates [ON/OFF] condition from ignition switch sig-
nal.
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 compen-
sated by ECM according to the input signals.
When the engine is stopped, a certain com-
puted value is indicated.
INJ PULSE-B2 [msec]
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.
CAL/LD VALUE [%]

“Calculated load value” indicates the value of the cur-
rent air flow divided by peak air flow.
MASS AIRFLOW [g·m/
s]

Indicates the mass air flow computed by ECM accord-
ing to the signal voltage of the mass air flow sensor.
PURG VOL C/V [%]

Indicates the EVAP canister purge volume control
solenoid valve control value computed by the ECM
according to the input signals.

The opening becomes larger as the value increases.
INT/V TIM(B1) [°CA]

Indicates [°CA] of intake camshaft advanced angle.
INT/V TIM(B2) [°CA]
EXH/V TIM B1 [°CA]

Indicates [°CA] of exhaust camshaft retarded angle.
EXH/V TIM B2 [°CA] Monitored item [Unit] Description Remarks

EC-128
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
EVAP SYS PRES
Ignition switch: ON Approx. 1.8 - 4.8V
FUEL LEVEL SE

Ignition switch: ONDepending on fuel level of fuel
tank
START SIGNAL

Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG

Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW

Ignition switch: ONShift lever: P or N (A/T), Neutral (M/T)
positionON
Shift lever: Except above position OFF
PW/ST SIGNAL

Engine: After warming up, idle
the engineSteering wheel: Not being turned OFF
Steering wheel: Being turned ON
LOAD SIGNAL

Ignition switch: ONRear window defogger switch: ON and/
or lighting switch: 2nd positionON
Rear window defogger switch and light-
ing switch: OFFOFF
IGNITION SW

Ignition switch: ON → OFF → ON ON → OFF → ON
HEATER FAN SW

Engine: After warming up, idle
the engineHeater fan switch: ON ON
Heater fan switch: OFF OFF
BRAKE SW

Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
INJ PULSE-B1
INJ PULSE-B2

Engine: After warming up

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

Air conditioner switch: OFF

No loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING

Engine: After warming up

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

Air conditioner switch: OFF

No loadIdle 6° - 16° BTDC
2,000 rpm 25° - 45° BTDC
CAL/LD VALUE

Engine: After warming up

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

Air conditioner switch: OFF

No loadIdle 5% - 35%
2,500 rpm 5% - 35%
MASS AIRFLOW

Engine: After warming up

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

Air conditioner switch: OFF

No loadIdle 2.0 - 6.0 g·m/s
2,500 rpm 7.0 - 20.0 g·m/s
PURG VOL C/V

Engine: After warming up

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

Air conditioner switch: OFF

No loadIdle
(Accelerator pedal is not depressed
even slightly, after engine starting)0%
2,000 rpm — MONITOR ITEM CONDITION SPECIFICATION

TROUBLE DIAGNOSIS
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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