ECO mode NISSAN 350Z 2007 Z33 Engine Control Manual PDF

EC-492
DTC P0461 FUEL LEVEL SENSOR
Revision: 2006 November2007 350Z
DTC P0461 FUEL LEVEL SENSORPFP:25060
Component DescriptionNBS006VA
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the “unified meter and A/C amp.”. The “unified meter and A/C amp.”
sends the fuel level sensor signal to the ECM through CAN commu-
nication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
On Board Diagnosis LogicNBS000A8
NOTE:

If DTC P0461 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-151, "
DTC U1000, U1001 CAN COMMUNICATION LINE".

If DTC P0461 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION" .
Driving long distances naturally affect fuel gauge level.
This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.
Overall Function CheckNBS000A9
Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip
DTC might not be confirmed.
WARNING:
When performing following procedure, be sure to observe the handling of the fuel. Refer to FL-10,
"FUEL TANK" .
TESTING CONDITION:
Before starting overall function check, preparation of draining fuel and refilling fuel is required.
WITH CONSULT-III
NOTE:
Start from step 10, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/
8 Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line, refer to EC-79, "
FUEL PRESSURE RELEASE" .
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.
6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CONSULT-III.
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP” in “ACTIVE TEST” mode with CONSULT-III.
1 : Fuel level sensor unit and fuel pump
2 : Fuel pressure regulator
3 : Fuel tank temperature sensor
PBIB2707E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0461
0461Fuel level sensor circuit
range/performanceThe output signal of the fuel level sensor does
not change within the specified range even
though the vehicle has been driven a long dis-
tance.

Harness or connectors
(The CAN communication line is open or
shorted)

Harness or connectors
(The sensor circuit is open or shorted)

Unified meter and A/C amp.

Fuel level sensor

EC-494
DTC P0462, P0463 FUEL LEVEL SENSOR
Revision: 2006 November2007 350Z
DTC P0462, P0463 FUEL LEVEL SENSORPFP:25060
Component DescriptionNBS006VB
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the “unified meter and A/C amp.”. The “unified meter and A/C amp.”
sends the fuel level sensor signal to the ECM through CAN commu-
nication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
On Board Diagnosis LogicNBS000AD
NOTE:

If DTC P0462 or P0463 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis
for DTC U1000, U1001. Refer to EC-151, "
DTC U1000, U1001 CAN COMMUNICATION LINE".

If DTC P0462 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION" .
This diagnosis indicates the former, to detect open or short circuit malfunction.
DTC Confirmation ProcedureNBS000AE
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 11V at ignition
switch ON.
WITH CONSULT-III
1. Turn ignition switch ON and wait at least 5 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-494, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnostic ProcedureNBS000AF
1. CHECK FUEL GAUGE OPERATION
Refer to DI-15, "
Self-Diagnosis Mode of Combination Meter" .
OK or NG
OK >> GO TO 2.
NG >> Follow the instruction of DI-15, "
Self-Diagnosis Mode of Combination Meter" .
1 : Fuel level sensor unit and fuel pump
2 : Fuel pressure regulator
3 : Fuel tank temperature sensor
PBIB2707E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0462
0462Fuel level sensor circuit
low inputAn excessively low voltage is sent from the
sensor is sent to ECM.

Harness or connectors
(The CAN communication line is open or
shorted)

Harness or connectors
(The sensor circuit is open or shorted)

Unified meter and A/C amp.

Fuel level sensor P0463
0463Fuel level sensor circuit
high inputAn excessively high voltage is sent from the
sensor is sent to ECM.

EC-496
DTC P0500 VSS
Revision: 2006 November2007 350Z
DTC P0500 VSSPFP:32702
DescriptionNBS000AH
NOTE:

If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-151, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC P0500 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION" .
The vehicle speed signal is sent to the “unified meter and A/C amp”. from the VDC/TCS/ABS control unit (with
VDC models) or “ABS actuator and electric unit (control unit)” (without VDC models) by CAN communication
line. The unified meter and A/C amp. then sends the signal to the ECM by CAN communication line.
On Board Diagnosis LogicNBS000AI
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureNBS000AJ
CAUTION:
Always drive vehicle at a safe speed.
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:
Steps 1 and 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-III
1. Start engine (VDC switch or TCS switch OFF).
2. Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-III. The vehicle speed on CON-
SULT-III should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
If NG, go to EC-497, "
Diagnostic Procedure" .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Warm engine up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive seconds.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0500
0500Vehicle speed sensorThe almost 0 km/h (0 MPH) signal from
vehicle speed sensor is sent to ECM
even when vehicle is being driven.

Harness or connectors
(The CAN communication line is open or
shorted)

Harness or connectors
(The vehicle speed signal circuit is open or
shorted)

Wheel sensor

Unified meter and A/C amp.

VDC/TCS/ABS control unit (with VDC models)

ABS actuator and electric unit (control unit)
(without VDC models)
Detected items Engine operating condition in fail-safe mode
Vehicle speed sensorWhen the fail-safe system for vehicle speed sensor is activated, the cooling fan operates (High) while
engine is running.
ENG SPEED1,800 - 6,000 rpm (A/T)
1,800 - 6,000 rpm (M/T)
COOLAN TEMP/S More than 70°C (158°F)

EC-502
DTC P0550 PSP SENSOR
Revision: 2006 November2007 350Z
DTC P0550 PSP SENSORPFP:49763
Component DescriptionNBS000AU
Power steering pressure (PSP) sensor (1) is installed to the power
steering high-pressure tube and detects a power steering load. This
sensor is a potentiometer which transforms the power steering load
into output voltage, and emits the voltage signal to the ECM. The
ECM controls the electric throttle control actuator and adjusts the
throttle valve opening angle to increase the engine speed and
adjusts the idle speed for the increased load.
CONSULT-III Reference Value in Data Monitor ModeNBS000AV
Specification data are reference values.
On Board Diagnosis LogicNBS000AW
The MIL will not light up for this self-diagnosis.
NOTE:
If DTC P0550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-514, "
DTC P0643 SENSOR POWER SUPPLY" .
DTC Confirmation ProcedureNBS000AX
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 at least 5 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-505, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
2 : Alternator
: Vehicle front
PBIB3511E
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL

Engine: After warming up, idle
the engineSteering wheel: Not being turned OFF
Steering wheel: Being turned ON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0550
0550Power steering pres-
sure sensor circuitAn excessively low or high voltage from the
sensor is sent to ECM.

Harness or connectors
(The sensor circuit is open or shorted)

Power steering pressure sensor

EC-512
DTC P0605 ECM
Revision: 2006 November2007 350Z
DTC P0605 ECMPFP:23710
Component DescriptionNBS000B2
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicNBS000B3
This self-diagnosis has one or two trip detection logic.
FAIL-SAFE MODE
ECM enters fail-safe mode when the malfunction A is detected.
DTC Confirmation ProcedureNBS000B4
Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform
PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION
B, perform PROCEDURE FOR MALFUNCTION C.
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.
PROCEDURE FOR MALFUNCTION A
With CONSULT-III
1. Turn ignition switch ON.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-513, "
Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-III” above.
PROCEDURE FOR MALFUNCTION B
With CONSULT-III
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to EC-513, "
Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-III” above.
PBIB3532E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605
0605Engine control moduleA) ECM calculation function is malfunctioning.

ECM B) ECM EEP-ROM system is malfunctioning.
C) ECM self shut-off function is malfunctioning.
Detected items Engine operation condition in fail-safe mode
Malfunction A

ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5
degrees) by the return spring.

ECM deactivates ASCD operation.

DTC P0605 ECM
EC-513
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
PROCEDURE FOR MALFUNCTION C
With CONSULT-III
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
3. Repeat step 3 for 32 times.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to EC-513, "
Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-III” above.
Diagnostic ProcedureNBS000B5
1. INSPECTION START
With CONSULT-III
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-III.
3. Touch “ERASE”.
4.Perform DTC Confirmation Procedure.
See EC-512, "
DTC Confirmation Procedure" .
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3.Perform DTC Confirmation Procedure.
See EC-512, "
DTC Confirmation Procedure" .
4. Is the 1st trip DTC P0605 displayed again?
Ye s o r N o
Ye s > > G O T O 2 .
No >>INSPECTION END
2. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs.
Refer to BL-152, "
ECM Re-communicating Function" .
3. Perform EC-76, "
VIN Registration" .
4. Perform EC-76, "
Exhaust Valve Timing Control Learning" .
5. Perform EC-77, "
Accelerator Pedal Released Position Learning" .
6. Perform EC-77, "
Throttle Valve Closed Position Learning" .
7. Perform EC-77, "
Idle Air Volume Learning" .
>>INSPECTION END

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-520
DTC P0850 PNP SWITCH
Revision: 2006 November2007 350Z
DTC P0850 PNP SWITCHPFP:23006
Component DescriptionNBS000GB
When the shift position is P or N (A/T), Neutral (M/T), park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists.
CONSULT-III Reference Value in Data Monitor ModeNBS000GC
Specification data are reference values.
On Board Diagnosis LogicNBS000GD
DTC Confirmation ProcedureNBS000GE
CAUTION:
Always drive vehicle at a safe speed.
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. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-III. Then check the “P/N POSI SW” sig-
nal under the following conditions.
If NG, go to EC-525, "
Diagnostic Procedure" .
If OK, go to following steps.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive seconds.
6. Check 1st trip DTC.
7. If 1st trip DTC is detected, go to EC-525, "
Diagnostic Procedure" .
Overall Function CheckNBS000GF
Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW

Ignition switch: ONShift lever: P or N (A/T), Neutral (M/T)
positionON
Shift lever: Except above position OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850
0850Park/neutral position
switchThe signal of the park/neutral position (PNP)
switch is not changed in the process of engine
starting and driving.

Harness or connectors
[The park/neutral position (PNP) switch
circuit is open or shorted.]

Park/neutral position (PNP) switch

TCM (A/T models)
Position (Shift lever) Known-good signal
N or P position (A/T)
Neutral position (M/T)ON
Except above position OFF
ENG SPEED 1,400 - 6375 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL 2.0 - 31.8 msec
VHCL SPEED SE More than 64 km/h (40 MPH)
Shift lever Suitable position

DTC P1211 TCS CONTROL UNIT
EC-541
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
DTC P1211 TCS CONTROL UNITPFP:47850
DescriptionNBS000D6
The malfunction information related to TCS is transferred through the CAN communication line from VDC/
TCS/ABS control unit (with VDC models) or “ABS actuator and electric unit (control unit)” (without VDC mod-
els) to ECM.
Be sure to erase the malfunction information such as DTC not only for VDC/TCS/ABS control unit
(with VDC models) or “ABS actuator and electric unit (control unit)” (without VDC models) but also for
ECM after TCS related repair.
On Board Diagnosis LogicNBS000D7

Freeze frame data is not stored in the ECM for this self-diagnosis.

The MIL will not light up for this self-diagnosis.
DTC Confirmation ProcedureNBS000D8
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-III
1. Start engine and let it idle for at least 60 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-541, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnostic ProcedureNBS000D9
Go to BRC-82, "TROUBLE DIAGNOSIS" (With VDC models) or BRC-42, "TROUBLE DIAGNOSIS" (Without
VDC models).
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1211
1211TCS control unitECM receives a malfunction information from
VDC/TCS/ABS control unit (with VDC models)
or “ABS actuator and electric unit (control unit)”
(without VDC models).

VDC/TCS/ABS control unit
(with VDC models)

ABS actuator and electric unit (control
unit) (without VDC models)

TCS related parts

EC-542
DTC P1212 TCS COMMUNICATION LINE
Revision: 2006 November2007 350Z
DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionNBS000DA
NOTE:

If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-151, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC P1212 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION" .
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and VDC/TCS/ABS control unit (with VDC models) or “ABS actuator
and electric unit (control unit)” (without VDC models).
Be sure to erase the malfunction information such as DTC not only for VDC/TCS/ABS control unit
(with VDC models) or “ABS actuator and electric unit (control unit)” (without VDC models) but also for
ECM after TCS related repair.
On Board Diagnosis LogicNBS000DB

Freeze frame data is not stored in the ECM for this self-diagnosis.

The MIL will not light up for this self-diagnosis.
DTC Confirmation ProcedureNBS000DC
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-III
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-542, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnostic ProcedureNBS000DD
Go to BRC-82, "TROUBLE DIAGNOSIS" (With VDC models) or BRC-42, "TROUBLE DIAGNOSIS" (Without
VDC models).
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212
1212TCS communication
lineECM can not receive the information
from VDC/TCS/ABS control unit (with
VDC models) or “ABS actuator and elec-
tric unit (control unit)” (without VDC mod-
els) continuously.

Harness or connectors
(The CAN communication line is open or
shorted.)

VDC/TCS/ABS control unit (with VDC models)

ABS actuator and electric unit (control unit)
(without VDC models)

Dead (Weak) battery