2001 NISSAN PICK-UP engine

Diagnostic Procedure=NEEC0454
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 3.
2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check ªPW/ST SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
LEC065A
OK or NG
OK©INSPECTION END
NG©GO TO 4.
3 CHECK OVERALL FUNCTION
Without CONSULT-II
1. Start engine.
2. Check voltage between ECM terminal 39 and ground under the following conditions.
SEF662P
MTBL0142
OK or NG
OK©INSPECTION END
NG©GO TO 4.
POWER STEERING OIL PRESSURE
SWITCH
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3387

4 CHECK INPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 39 and terminal 1. Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 6.
NG©GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M5, E101
Check the harness for open or short between ECM and power steering oil pressure switch.
©Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK GROUND CIRCUIT
1. Disconnect power steering oil pressure switch harness connector.
2. Check continuity between power steering oil pressure switch harness connector terminal 2 and ground.
Continuity should exist.
OK or NG
OK©
NG©Repair open circuit or short to power in harness or connectors.
7 CHECK POWER STEERING OIL PRESSURE SWITCH
1. Disconnect power steering oil pressure switch harness connector then start engine.
2. Check continuity between terminals 1 and ground. Refer to wiring diagram.
MTBL0307
OK or NG
OK©GO TO 8.
NG©Replace power steering oil pressure switch.
8 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-3123.
©INSPECTION END
POWER STEERING OIL PRESSURE
SWITCH
KA24DE (EURO OBD)
Diagnostic Procedure
EC-3388

SEF342V
Component DescriptionNEEC0462When the air conditioner is on, the IACV-FICD solenoid valve sup-
plies additional air to adjust to the increased load.
ECM Terminals and Reference ValueNEEC0463Specification 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.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
12 G/W Air conditioner relay[Engine is running]
+Both A/C switch and blower switch are ONHApproximately 0V
[Engine is running]
+A/C switch is OFFBATTERY VOLTAGE
(11 - 14V)
HAmbient air temperature above 10ÉC (50ÉF) and in any mode except OFF.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Component Description
EC-3389

Diagnostic Procedure=NEEC0464
1 CHECK OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
700±50 rpm
If NG, adjust idle speed.
3. Push air conditioner switch ON and turn fan switch to 4-speed.
4. Recheck idle speed.
MEF634E
850 rpm or more
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 CHECK AIR CONDITIONER FUNCTION
Check if air conditioner compressor functions normally.
OK or NG
OK©GO TO 3.
NG©Refer to ªSymptom Tableº in ªTROUBLE DIAGNOSISº, HA section.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Diagnostic Procedure
EC-3392

3 CHECK POWER SUPPLY
1. Stop engine.
2. Disconnect IACV-FICD solenoid valve harness connector.
SEF342V
3. Start engine, then push A/C switch ON and turn fan switch to 4-speed.
4. Check voltage between terminal 1 and ground with CONSULT-II or tester.
SEC281D
Voltage: Battery voltage
OK or NG
OK©GO TO 5.
NG©GO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E101, M5
+Harness for open or short between IACV-FICD solenoid valve and air conditioner relay
©Repair open circuit, short to ground or short to power in harness or connectors.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Diagnostic Procedure
EC-3393

Fuel Pressure RegulatorNEEC0467
Fuel pressure at idling
kPa (bar, kg/cm2, psi)Vacuum hose is connected Approximately 235 (2.35, 2.4, 34)
Vacuum hose is disconnected Approximately 294 (2.94, 3.0, 43)
Idle Speed and Ignition TimingNEEC0468
Base idle speed*1 rpm No-load*3 (in ªNº position) 650±50
Target idle speed*2 rpm No-load*3 (in ªNº position) 700±50
Air conditioner: ON rpm In ªNº position 850 or more
Ignition timing*1 In ªNº position 15ɱ2É BTDC
*1: Throttle position sensor harness connector disconnected or using CONSULT-II ªWORK SUPPORTº mode
*2: Throttle position sensor harness connector connected
*3: Under the following conditions:
+Air conditioner switch: OFF
+Electrical load: OFF (Lights, heater fan & rear window defogger)
+Steering wheel: Kept in straight-ahead position
Ignition CoilNEEC0469
Primary voltage VBattery voltage 12
Primary resistance [at 20ÉC (68ÉF)]WApproximately 1.0
Secondary resistance [at 20ÉC (68ÉF)] kWApproximately 10
Mass Air Flow SensorNEEC0470
Supply voltage VBattery voltage (11 - 14)
Output voltage V0.9 - 1.8*
Mass air flow
(Using CONSULT-II or GST) g´m/sec0.9 - 5.8 at idle*
7.5 - 13.2 at 2,500 rpm*
*: Engine is warmed up to normal operating temperature and idling under no-load.
Engine Coolant Temperature SensorNEEC0471
Temperature ÉC (ÉF) Resistance kW
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Fuel PumpNEEC0473
Resistance [at 25ÉC (77ÉF)]W0.2 - 5.0
IACV-AAC ValveNEEC0474
Resistance [at 25ÉC (77ÉF)]WApproximately 10.0
InjectorNEEC0475
Resistance [at 25ÉC (77ÉF)]W7.3 - 9.9
SERVICE DATA AND SPECIFICATIONS
(SDS)
KA24DE (EURO OBD)
Fuel Pressure Regulator
EC-3398

Throttle Position Sensor=NEEC0477
Throttle valve conditions Voltage (at normal operating temp., engine off, ignition switch on)
Completely closed (a)0.2 - 0.8V
Partially openBetween (a) and (b)
Completely open (b)3.5 - 4.5V
Heated Oxygen Sensor 1 HeaterNEEC0478
Resistance [at 25ÉC (77ÉF)]W2.3 - 4.3
Calculated Load ValueNEEC0479
Calculated load value %
(Using CONSULT-II or GST)
At idle9.5 - 34.0%
At 2,500 rpm13.9 - 24.9%
Intake Air Temperature SensorNEEC0480
Temperature ÉC (ÉF) Resistance kW
20 (68) 2.1 - 2.9
80 (176) 0.27 - 0.38
Heated Oxygen Sensor 2 HeaterNEEC0483
Resistance [at 25ÉC (77ÉF)]W2.3 - 4.3
Crankshaft Position Sensor (OBD)NEEC0484
Resistance [at 20ÉC (68ÉF)]W512 - 632
SERVICE DATA AND SPECIFICATIONS
(SDS)
KA24DE (EURO OBD)
Throttle Position Sensor
EC-3399

Precautions
+Always use a 12 volt battery as power source.
+Do not attempt to disconnect battery cable while engine
is running.
+Before connecting or disconnecting the ECM harness
connector, turn ignition switch OFF and disconnect
negative battery terminal. Failure to do so may damage
the ECM because battery voltage is applied to ECM even
if ignition switch is turned off.
+Before removing parts, turn off ignition switch and then
disconnect battery ground cable.
+Do not disassemble ECM.
+If a battery terminal is disconnected, the memory will
return to the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is
disconnected. However, this is not an indication of a
problem. Do not replace parts because of a slight varia-
tion.
+When ECM is removed for inspection, make sure to
ground the ECM mainframe.
+When connecting engine control system harness
connector, tighten securing bolt until the gap between
the orange indicators disappears.
: 3.0 - 5.0 Nzm (0.3 - 0.5 kg-m, 26 - 43 in-lb)
+When connecting or disconnecting pin connectors into
or from ECM, take care not to damage pin terminals
(bend or break).
Make sure that there are not any bends or breaks on
ECM pin terminal, when connecting pin connectors.
+Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in the circuit, thus resulting in dam-
age to ICs.
+Keep ECM harness at least 10 cm (3.9 in) away from
adjacent harnesses, to prevent an ECM system malfunc-
SEF706Y
SEC220B
SEF665S
SEF308Q
SEF291H
PRECAUTIONSYD25DDTi
EC-3402