Page 656 of 720

EC-656
DTC P2138 APP SENSOR
Revision: 2006 November2007 350Z
5. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 4 and ECM terminal 103.
Refer to Wiring Diagram.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E108, M15
Harness for open between ECM and APP sensor
>> Repair open circuit.
7. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 8.
NG >> Repair short to ground or short to power in harness or connectors.
8. 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" .)
EVAP control system pressure sensor (Refer to EC-464, "Component Inspection" .)
Refrigerant pressure sensor (Refer to AT C - 8 0 , "COMPONENT INSPECTION" .)
OK or NG
OK >> GO TO 15.
NG >> Replace malfunctioning component.Continuity should exist.
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 terminal 1EC-711
Page 691 of 720

FUEL PUMP
EC-691
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 November2007 350Z
FUEL PUMPPFP:17042
DescriptionNBS000HW
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
startability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-III Reference Value in Data Monitor ModeNBS000HX
Specification data are reference values.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
Fuel pump control Fuel pump relay
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch: ONOperates for 1 second.
Engine running or crankingOperates.
Engine: StoppedStops in 1.5 seconds.
Except as shown aboveStops.
1 : Fuel level sensor unit and fuel pump
2 : Fuel pressure regulator
3 : Fuel tank temperature sensor
PBIB2707E
MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY
For 1 second after turning ignition switch ON
Engine running or crankingON
Except above conditions OFF
Page 718 of 720

EC-718
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 November2007 350Z
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureNBS000IJ
Idle Speed and Ignition TimingNBS000IK
*: Under the following conditions:
Air conditioner switch: OFF
Electric load: OFF (Lights, heater fan & rear window defogger)
Steering wheel: Kept in straight-ahead position
Calculated Load ValueNBS000IL
Mass Air Flow SensorNBS000IM
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorNBS000IN
Engine Coolant Temperature SensorNBS000IO
Air Fuel Ratio (A/F) Sensor 1 HeaterNBS000IP
Heated Oxygen sensor 2 HeaterNBS000IQ
Crankshaft Position Sensor (POS)NBS000IR
Refer to EC-393, "Component Inspection" .
Camshaft Position Sensor (PHASE)NBS000IS
Refer to EC-405, "Component Inspection" .
Fuel pressure at idling kPa (kg/cm2 , psi)Approximately 350 (3.57, 51)
Target idle speedA/T No load* (in P or N position)
650 ± 50 rpm
M/T No load* (in Neutral position)
Air conditioner: ONA/T In P or N position 650 rpm or more
M/T In Neutral position 800 rpm or more
Ignition timingA/T In P or N position
15° ± 5° BTDC
M/T In Neutral position
Conditions Calculated load value % (Using CONSULT-III or GST)
At idle5 - 35
At 2,500 rpm5 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle0.8 - 1.1V*
Mass air flow (Using CONSULT-III or GST)2.0 - 6.0 g·m/sec at idle*
7.0 - 20.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.800 - 2.200
Temperature °C (°F) Resistance kΩ
20 (68)2.37 - 2.63
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260
Resistance [at 25°C (77°F)] 1.8 - 2.44Ω
Resistance [at 25°C (77°F)] 3.4 - 4.4Ω