2007 NISSAN 350Z display

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

EC-540
DTC P1148, P1168 CLOSED LOOP CONTROL
Revision: 2006 November2007 350Z
DTC P1148, P1168 CLOSED LOOP CONTROLPFP:22690
On Board Diagnosis LogicNBS000D5
These self-diagnoses have the one trip detection logic.
NOTE:
DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.
Perform the trouble diagnosis for the corresponding DTC.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148
1148
(Bank 1)
Closed loop control
functionThe closed loop control function for bank 1
does not operate even when vehicle is driving
in the specified condition.

Harness or connectors
[The air fuel ratio (A/F) sensor 1 circuit is
open or shorted.]

Air fuel ratio (A/F) sensor 1

Air fuel ratio (A/F) sensor 1 heater P1168
1168
(Bank 2)The closed loop control function for bank 2
does not operate even when vehicle is driving
in the specified condition.

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

DTC P1217 ENGINE OVER TEMPERATURE
EC-543
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Revision: 2006 November2007 350Z
DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
DescriptionNBS000DE
SYSTEM DESCRIPTION
NOTE:

If DTC P1217 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 P1217 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-154, "
DTC U1010 CAN COMMUNICATION" .
Cooling Fan Control
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
1
Cooling fan
controlIPDM E/R
(Cooling fan relays) Battery
Battery voltage*
1
Wheel sensor
Vehicle speed*2
Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch
Air conditioner ON signal*
2
Refrigerant pressure sensor Refrigerant pressure
PBIB2483E

DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
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Revision: 2006 November2007 350Z
DTC P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTIONPFP:16119
DescriptionNBS000C3
NOTE:
If DTC P1233 or P2101 is displayed with DTC P1238, P1290, P2100, P2119 first perform the trouble
diagnosis for DTC P1238, P2119 or P1290, P2100. Refer to EC-580, "
DTC P1238, P2119 ELECTRIC
THROTTLE CONTROL ACTUATOR" or EC-592, "DTC P1290, P2100, P2103 THROTTLE CONTROL
MOTOR RELAY" .
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis LogicNBS000C4
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 ProcedureNBS000C5
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 when engine
is running.
WITH CONSULT-III
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
4. If DTC is detected, go to EC-566, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1233
1233
(Bank 2)
Electric throttle control
performanceElectric throttle control function does not oper-
ate properly.

Harness or connectors
(The throttle control motor circuit is open
or shorted)

Electric throttle control actuator P2101
2101
(Bank 1)
Engine operating 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-582
DTC P1239, P2135 TP SENSOR
Revision: 2006 November2007 350Z
DTC P1239, P2135 TP SENSORPFP:16119
Component DescriptionNBS000H5
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. In addition,
these sensors detect the opening and closing speed of the throttle
valve and feed the voltage signals to the ECM. The ECM judges the
current opening angle of the throttle valve from these signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.
CONSULT-III Reference Value in Data Monitor ModeNBS000H6
Specification data are reference values.
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.
On Board Diagnosis LogicNBS000H7
This self-diagnosis has the one trip detection logic.
NOTE:
If DTC P1239 or P2135 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-514, "
DTC P0643 SENSOR POWER SUPPLY" .
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
TP SEN 1-B1
TP SEN 2-B1*
1
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
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2135
2135Throttle position sensor
circuit range/perfor-
manceRationally incorrect voltage is sent to ECM
compared with the signals from TP sensor 1
and TP sensor 2.

Harness or connector
(TP sensor 1 and 2 circuit is open or
shorted.)

Electric throttle control actuator
(TP sensor 1 and 2)
Engine operation condition in fail-safe mode
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.

EC-600
DTC P1421 COLD START CONTROL
Revision: 2006 November2007 350Z
DTC P1421 COLD START CONTROLPFP:23710
DescriptionNBS006TX
ECM controls ignition timing and engine idle speed when engine is started with prewarming up condition.
This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.
On Board Diagnosis LogicNBS006TY
DTC Confirmation ProcedureNBS006TZ
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.

If DTC P1421 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-III
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Check that the “COOLAN TEMP/S” indication is between 4°C (39°F) and 36°C (97°F).
If “COOLAN TEMP/S” indication is within the specified value, go to the following step.
If “COOLANT TEMP/S” indication is out of the specified value, cool engine down or warm engine up and
go to step 1.
5. Start engine and let it idle for 5 minutes.
6. Check 1st trip DTC.
7. If 1st trip DTC is detected, go to EC-600, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnostic ProcedureNBS006U0
1. PERFORM IDLE AIR VOLUME LEARNING
Perform EC-77, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Yes >> GO TO 2.
No >> Follow the instruction of Idle Air Volume Learning.
2. CHECK INTAKE SYSTEM
Check for the cause of intake air volume lacking. Refer to the following.

Crushed intake air passage

Intake air passage clogging
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning part
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1421
1421Cold start emission reduction
strategy monitoringECM does not control ignition timing and engine
idle speed properly when engine is started with
prewarming up condition.

Lack of intake air volume

Fuel injection system

ECM

DTC P1421 COLD START CONTROL
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Revision: 2006 November2007 350Z
3. CHECK FUEL INJECTION SYSTEM FUNCTION
Perform EC-324, "
DTC Confirmation Procedure" for DTC P0171.
OK or NG
OK >> GO TO 4.
NG >> Go to EC-330, "
Diagnostic Procedure" for DTC P0171.
4. PERFORM DTC CONFIRMATION PROCEDURE
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-600, "
DTC Confirmation Procedure" .
5. Is the 1st trip DTC P1421 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3.Perform DTC Confirmation Procedure.
See EC-600, "
DTC Confirmation Procedure" .
4. Is the 1st trip DTC P1421 displayed again?
Ye s o r N o
Ye s > > G O T O 5 .
No >>INSPECTION END
5. 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