2001 NISSAN PICK-UP Repair Manual

8 CHECK FUEL PUMP
1. Disconnect fuel level sensor and fuel pump harness connector. Refer to wiring diagram.
SEC280D
2. Check resistance between terminals 2 and 4.
Resistance: 0.2 - 5.0W[at 25ÉC (77ÉF)]
OK or NG
OK©GO TO 9.
NG©Replace fuel pump.
9 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-3123.
©INSPECTION END
FUEL PUMPKA24DE (EURO OBD)
Diagnostic Procedure
EC-3384

SEF351V
Component DescriptionNEEC0451The power steering oil pressure switch is attached to the power
steering high-pressure tube and detects a power steering load.
When a power steering load is detected, it signals the ECM. The
ECM adjusts the IACV-AAC valve to increase the idle speed and
adjust for the increased load.
CONSULT-II Reference Value in Data Monitor
Mode
NEEC0452Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL+Engine: After warming up, idle
the engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is fully turned ON
ECM Terminals and Reference ValueNEEC0453Specification 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)
39 SBPower steering oil pres-
sure switch[Engine is running]
+Steering wheel is fully turnedApproximately 0V
[Engine is running]
+Steering wheel is not turnedApproximately 5V
POWER STEERING OIL PRESSURE
SWITCH
KA24DE (EURO OBD)
Component Description
EC-3385

Wiring DiagramNEEC0450
GEC257A
POWER STEERING OIL PRESSURE
SWITCH
KA24DE (EURO OBD)
Wiring Diagram
EC-3386

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

Wiring DiagramNEEC0461MODEL WITH MANUAL AIR CONDITIONERNEEC0461S01
GEC258A
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Wiring Diagram
EC-3390

MODEL WITH AUTO AIR CONDITIONERNEEC0461S02
GEC259A
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Wiring Diagram
EC-3391