Page 93 of 720

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
Page 94 of 720

EC-94
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Engine Control Component Parts LocationNBS0003I
1. IPDM E/R 2. Mass air flow sensor (with intake air
temperature sensor) (bank 1)3. Refrigerant pressure sensor
4. Cooling fan motor-2 5. Intake valve timing control solenoid
valve6. Exhaust valve timing control magnet
retarder
7. Cooling fan motor-1 8. Mass air flow sensor (with intake air
temperature sensor) (bank 2)9. Ignition coil (with power transistor)
and spark plug (bank 2)
10. Electric throttle control actuator
(bank 2)11. A/F sensor 1 (bank 2) 12. Exhaust valve timing control position
sensor
13. Camshaft position sensor (PHASE) 14. Fuel injector (bank 2) 15. Engine coolant temperature sensor
16. Knock sensor 17. EVAP canister purge volume con-
trol solenoid valve18. Fuel injector (bank 1)
19. Ignition coil (with power transistor)
and spark plug (bank 1)20. EVAP service port 21. A/F sensor 1 (bank 1)
22. Crankshaft position sensor (POS) 23. Electric throttle control actuator
(bank 1)
PBIB3474E
Page 96 of 720
EC-96
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
1. Ignition coil No.5 (with power tran-
sistor)2. Ignition coil No.3 (with power tran-
sistor)3. Ignition coil No.1 (with power tran-
sistor)
4. Condenser 5. Fuel injector No.3 6. Fuel injector No.1
7. Fuel injector No.2 8. Fuel injector No.4 9. Ignition coil No.2 (with power tran-
sistor)
10. Ignition coil No.4 (with power tran-
sistor)11. ignition coil No.6 (with power tran-
sistor)12. Fuel injector No.6
13. Fuel injector No.5 14. Knock sensor (bank 1) 15. Knock sensor (bank 2)
1. Engine coolant temperature sensor 2. A/F sensor 1 (bank 1) 3. Crankshaft position sensor
:Vehicle front
1. Cooling fan motor-1 2. Cooling fan motor-2
:Vehicle front
PBIB3520E
PBIB3521E
PBIB3509E
Page 98 of 720
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
Page 106 of 720
![NISSAN 350Z 2007 Z33 Engine Control Workshop Manual 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, af NISSAN 350Z 2007 Z33 Engine Control Workshop Manual 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, af](/manual-img/5/762/w960_762-105.png)
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
Page 110 of 720

EC-110
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
60 R/LSensor power supply
[Camshaft position sensor
(PHASE) (bank 1), Exhaust
valve timing control position
sensor (bank 1), Power
steering pressure sensor][Ignition switch: ON]5V
61 R A/F sensor 1 (bank 1)[Ignition switch: ON]
Warm-up condition
Engine speed: 2,000 rpm1.8V
Output voltage varies with air
fuel ratio.
62 B/YExhaust valve timing control
position sensor (bank 2)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.4.0 - 5.0V
[Engine is running]
Warm-up condition
Engine speed: 2,000 rpm4.0 - 5.0V
63 SBCamshaft position sensor
(PHASE) (bank 2)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.3.0 - 5.0V
[Engine is running]
Engine speed: 2,000 rpm1.0 - 4.0V
64 W/GSensor power supply
[Camshaft position sensor
(PHASE) (bank 2), Exhaust
valve timing control position
sensor (bank 2)][Ignition switch: ON]5V
65 PU A/F sensor 1 (bank 2)[Ignition switch: ON]2.2V
66 LG A/F sensor 1 (bank 2)[Ignition switch: ON]
Warm-up condition
Engine speed: 2,000 rpm1.8V
Output voltage varies with air
fuel ratio.
67 W/LIntake air temperature sen-
sor (bank 1)[Engine is running]0 - 4.8V
Output voltage varies with intake
air temperature. TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB3551E
PBIB3552E
PBIB3553E
PBIB3554E
Page 112 of 720

EC-112
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
81
82
85
86
89
90R/B
L/R
BR
W/B
G/Y
Y/RFuel injector No. 3
Fuel injector No. 6
Fuel injector No. 2
Fuel injector No. 5
Fuel injector No. 1
Fuel injector No. 4[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed: 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
83 GIntake air temperature sen-
sor (bank 2)[Engine is running]0 - 4.8V
Output voltage varies with intake
air temperature.
84 GSensor ground
(Heated oxygen sensor 2,
Engine coolant temperature
sensor, Engine oil tempera-
ture sensor)[Engine is running]
Warm-up condition
Idle speed0V
87 YPower steering pressure
sensor[Engine is running]
Steering wheel: Being turned0.5 - 4.5V
[Engine is running]
Steering wheel: Not being turned0.4 - 0.8V
88 LG/BSensor ground
[Exhaust valve timing con-
trol position sensor (bank 1),
Exhaust valve timing control
position sensor (bank 2)][Engine is running]
Warm-up condition
Idle speed0V
92 B/PSensor ground
[Camshaft position sensor
(PHASE) (bank 2)][Engine is running]
Warm-up condition
Idle speed0V
93 PPower supply for ECM
(Back-up)[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
94 L/YSensor ground
[Mass air flow sensor (bank
2)][Engine is running]
Warm-up condition
Idle speed0V
96 P/LSensor ground
[Camshaft position sensor
(PHASE) (bank 1), Power
steering pressure sensor][Engine is running]
Warm-up condition
Idle speed0V
97 RAccelerator pedal position
sensor 1[Ignition switch: ON]
Engine stopped
Accelerator pedal: Fully released0.5 - 1.0V
[Ignition switch: ON]
Engine stopped
Accelerator pedal: Fully depressed3.9 - 4.7V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB3555E
PBIB3556E
Page 113 of 720
![NISSAN 350Z 2007 Z33 Engine Control Workshop Manual TROUBLE DIAGNOSIS
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98 SBAccelerator pedal position
sensor 2[Ignition switch: ON]
Engine stopped
Accelerator pedal: Fully released1.9 NISSAN 350Z 2007 Z33 Engine Control Workshop Manual TROUBLE DIAGNOSIS
EC-113
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98 SBAccelerator pedal position
sensor 2[Ignition switch: ON]
Engine stopped
Accelerator pedal: Fully released1.9](/manual-img/5/762/w960_762-112.png)
TROUBLE DIAGNOSIS
EC-113
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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)