NISSAN 350Z 2007 Z33 Engine Control Workshop Manual

DTC P0850 PNP SWITCH
EC-521
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Revision: 2006 November2007 350Z
WITH GST
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 109 (PNP switch signal)
and ground under the following conditions.
3. If NG, go to EC-525, "
Diagnostic Procedure" .
Condition (Shift lever) Voltage V (Known-good data)
P or N position (A/T)
Neutral position (M/T)Approx. 0
Except above positionBATTERY VOLTAGE
(11 - 14V)
MBIB0015E

EC-522
DTC P0850 PNP SWITCH
Revision: 2006 November2007 350Z
Wiring DiagramNBS000GG
A/T MODELS
TBWT1654E

DTC P0850 PNP SWITCH
EC-523
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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)
109 BR PNP switch[Ignition switch: ON]

Shift lever: P or N positionBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Shift lever: Except above position0V

EC-524
DTC P0850 PNP SWITCH
Revision: 2006 November2007 350Z
M/T MODELS
TBWT1655E

DTC P0850 PNP SWITCH
EC-525
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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.
Diagnostic ProcedureNBS000GH
A/T MODELS
1. CHECK DTC WITH TCM
Refer to AT- 3 7 , "
OBD-II Diagnostic Trouble Code (DTC)" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2. CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
Ye s o r N o
Ye s > > G O T O 3 .
No >> Refer to SC-8, "
STARTING SYSTEM" .
3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between A/T assembly terminal 9 and ECM terminal 109.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F102, M72

Harness for open or short between A/T assembly and ECM.
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
109 BR PNP switch[Ignition switch: ON]

Shift lever: Neutral positionBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Shift lever: Except above position0V
Continuity should exist.

EC-526
DTC P0850 PNP SWITCH
Revision: 2006 November2007 350Z
5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Check harness continuity between A/T assembly terminal 9 and TCM terminal 8.
Refer to AT- 9 7 , "
DTC P0615 START SIGNAL CIRCUIT" .
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness connectors.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
M/T MODELS
1. CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect park/neutral position (PNP) switch harness connector.
3. Turn ignition switch ON.
4. Check the voltage between PNP switch terminal 2 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 3
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.

Harness connector E10, F1

10A fuse

IPDM harness connector E7

Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 109 and PNP switch terminal 1.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.Continuity should exist.
Voltage: Battery voltage
Continuity should exist.

DTC P0850 PNP SWITCH
EC-527
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Revision: 2006 November2007 350Z
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connector F102, M72

Harness for open or short between PNP switch and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK PNP SWITCH
Refer to MT-11, "
PARK/NEUTRAL POSITION SWITCH" .
OK or NG
OK >> GO TO 6.
NG >> Replace PNP switch.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-141, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair open dircuit or short to ground or short to power in harness or connectors.

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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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

EC-530
DTC P1078 P1084 EVT CONTROL POSITION SENSOR
Revision: 2006 November2007 350Z
Wiring DiagramNBS000BN
BANK 1
TBWT1656E