camshaft NISSAN 350Z 2007 Z33 Engine Control Repair Manual

EC-466
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 November2007 350Z
On Board Diagnosis LogicNBS0009Q
DTC Confirmation ProcedureNBS0009R
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Always perform test at a temperature of 5°C (41°F) or more.
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select “DATA MONITOR” mode with CONSULT-III.
5. Make sure that “FUEL T/TEMP SE” is more than 0°C (32°F).
6. Start engine and wait at least 20 seconds.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to EC-469, "
Diagnostic Procedure" .
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 106 (Fuel tank tem-
perature sensor signal) and ground is less than 4.2V.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and wait at least 20 seconds.
5. Select Service $07 with GST.
If 1st trip DTC is detected, go to EC-469, "
Diagnostic Procedure"
.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0453
0453EVAP control system
pressure sensor high
inputAn excessively high voltage from the sensor is
sent to ECM.

Harness or connectors
(EVAP control system pressure sensor
circuit is shorted.)
[CKP sensor (POS) circuit is shorted.]
[CMP sensor (PHASE) (bank 2) circuit is
shorted.]
[EVT control position sensor (bank 2) cir-
cuit is shorted.]
(APP sensor 2 circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)

EVAP control system pressure sensor

Crankshaft position sensor (POS)

Camshaft position sensor (PHASE)
(bank 2)

Exhaust valve timing control position
sensor (bank 2)

Accelerator pedal position sensor

Refrigerant pressure sensor

EVAP canister vent control valve

EVAP canister

Rubber hose from EVAP canister vent
control valve to vehicle frame
PBIB3574E

EC-468
DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
46 R/BSensor power supply
[Crankshaft position sensor
(POS)][Ignition switch: ON]5V
64 W/GSensor power supply
[Camshaft position sensor
(PHASE) (bank 2), Exhaust
valve timing control position
sensor (bank 2)][Ignition switch: ON]5V
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
107 BRSensor power supply
(EVAP control system pres-
sure sensor)[Ignition switch: ON]5V
111 O RSensor power supply
(Refrigerant pressure sen-
sor)[Ignition switch: ON]5V
11 2 P USensor ground
(EVAP control system pres-
sure sensor)[Engine is running]

Warm-up condition

Idle speed0V

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR
EC-471
C
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EC
Revision: 2006 November2007 350Z
6. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 7.
NG >> Repair short to ground or short to power in harness or connectors.
7. CHECK COMPONENTS
Check the following.

Crankshaft position sensor (POS) (Refer to EC-393, "Component Inspection" .)

Camshaft position sensor (PHASE) (bank 2) (Refer to EC-405, "Component Inspection" .)

Exhaust valve timing control position sensor (bank 2) (Refer to EC-539, "Component Inspection" .)

Refrigerant pressure sensor (Refer to AT C - 8 0 , "COMPONENT INSPECTION" .
OK or NG
OK >> GO TO 8.
NG >> Replace malfunctioning component.
8. CHECK APP SENSOR
Refer to EC-648, "
Component Inspection" .
OK or NG
OK >> GO TO 20.
NG >> GO TO 9.
9. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
3. Perform EC-77, "
Throttle Valve Closed Position Learning" .
4. Perform EC-77, "
Idle Air Volume Learning" .
>>INSPECTION END
ECM terminal Sensor terminal Reference Wiring Diagram
46 CKP sensor (POS) terminal 1EC-388
64CMP sensor (PHASE) (bank 2) terminal 1EC-399EVT control position sensor (bank 2) terminal 1EC-532
103 APP sensor terminal 4EC-643
107 EVAP control system pressure sensor terminal 3EC-458
111 Refrigerant pressure sensor 1EC-711

EC-504
DTC P0550 PSP SENSOR
Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
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
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
96 P/LSensor ground
[Camshaft position sensor
(PHASE) (bank 1), Power
steering pressure sensor][Engine is running]

Warm-up condition

Idle speed0V

EC-514
DTC P0643 SENSOR POWER SUPPLY
Revision: 2006 November2007 350Z
DTC P0643 SENSOR POWER SUPPLYPFP:18919
On Board Diagnosis LogicNBS000DW
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureNBS000DX
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8V at idle.
WITH CONSULT-III
1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to EC-517, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0643
0643Sensor power supply
circuit shortECM detects a voltage of power
source for sensor is excessively
low or high.

Harness or connectors
(APP sensor 1 circuit is shorted.)
(TP sensor circuit is shorted.)
[CMP sensor (PHASE) (bank 1) circuit is shorted.]
[EVT control position sensor (bank 1) circuit is shorted.]
(PSP sensor circuit is shorted.)

Accelerator pedal position sensor

Throttle position sensor

Camshaft position sensor (PHASE) (bank 1)

Exhaust valve timing control position sensor (bank 1)

Power steering pressure sensor
Engine operation condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.

EC-516
DTC P0643 SENSOR POWER SUPPLY
Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
43 OR/LSensor power supply
[Throttle position sensor
(bank 2)][Ignition switch: ON]5V
44 BSensor power supply
[Throttle position sensor
(bank 1)][Ignition switch: ON]5V
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
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
98 SBAccelerator pedal position
sensor 2[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released0.15 - 0.60V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed1.95 - 2.40V
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
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

EC-518
DTC P0643 SENSOR POWER SUPPLY
Revision: 2006 November2007 350Z
2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 6 and ground with
CONSULT-III or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 3.
3. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 4.
NG >> Repair short to ground or short to power in harness or connectors.
4. CHECK COMPONENTS
Check the following.

Camshaft position senosr (PHASE) (bank 1) (Refer to EC-405, "Component Inspection" .)

Exhaust valve timing control position sensor (bank 1) (Refer to EC-539, "Component Inspection" .)

Power steering pressure sensor (Refer to EC-507, "Component Inspection" .)
OK or NG
OK >> GO TO 5.
NG >> Replace malfunctioning component.
PBIB1080E
Voltage: Approximately 5V
PBIB0914E
ECM terminal Sensor terminal Reference Wiring Diagram
43 Electric throttle control actuator (bank 2) terminal 6EC-365
44 Electric throttle control actuator (bank 1) terminal 6EC-363
60CMP sensor (PHASE) (bank 1) terminal 1EC-397EVT control position sensor (bank 1) terminal 1EC-530
PSP sensor terminal 1EC-503
99 APP sensor terminal 6EC-515

EC-528
DTC P1078 P1084 EVT CONTROL POSITION SENSOR
Revision: 2006 November2007 350Z
DTC P1078 P1084 EVT CONTROL POSITION SENSORPFP:23731
Component DescriptionNBS000BJ
Exhaust valve timing control position sensor detects the concave
groove of the exhaust camshaft rear end.
This sensor signal is used for sensing a position of the exhaust cam-
shaft.
This sensor uses a Hall IC.
Based on the position of the exhaust camshaft, ECM controls
exhaust valve timing control magnet retarder to optimize the shut/
open timing of exhaust valve for the driving condition.
CONSULT-III Reference Value in Data Monitor ModeNBS000BK
Specification data are reference values.
On Board Diagnosis LogicNBS000BL
NOTE:
If DTC P1078 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-514, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB3565E
MONITOR ITEM CONDITION SPECIFICATION
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

DTC P1078 P1084 EVT CONTROL POSITION SENSOR
EC-529
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MA
EC
Revision: 2006 November2007 350Z
DTC Confirmation ProcedureNBS000BM
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-III
1. Start engine and let it idle for 10 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-534, "
Diagnostic Procedure" .
WITH GST
Follow the procedure WITH CONSULT-III above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1078
1078
(Bank 1)
Exhaust valve timing con-
trol position sensor circuitAn excessively high or low voltage from the
sensor is sent to ECM.

Harness or connectors
[Exhaust valve timing control position
sensor (bank 1) circuit is open or
shorted)

Exhaust valve timing control position
sensor (bank 1)

Crankshaft position sensor (POS)

Camshaft position sensor (PHASE)
(bank 1)

Accumulation of debris to the signal
pick-up portion of the camshaft
P1084
1084
(Bank 2)

Harness or connectors
[EVT control position sensor (bank 2)
circuit is shorted.]
[CKP sensor (POS) circuit is shorted.]
[CMP sensor (PHASE) (bank 2) circuit
is open or shorted.]
(APP sensor 2 circuit is shorted.)
(EVAP control system pressure sensor
circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)

Exhaust valve timing control position
sensor (bank 2)

Crankshaft position sensor (POS)

Camshaft position sensor (PHASE)
(bank 2)

Accelerator pedal position sensor

EVAP control system pressure sensor

Refrigerant pressure sensor

Accumulation of debris to the signal
pick-up portion of the camshaft

DTC P1078 P1084 EVT CONTROL POSITION SENSOR
EC-531
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EC
Revision: 2006 November2007 350Z
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
58 Y/GExhaust valve timing control
position sensor (bank 1)[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
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
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
PBIB3551E
PBIB3552E