2001 NISSAN PICK-UP Repair Manual

SYSTEM Ð ENGINE MECHANICAL & OTHERNEEC0041S03
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel tank
5
5FE section
Fuel piping 5 5 5 5 5 5
Ð Vapor lock
Valve deposit
555555 5
Poor fuel (Heavy weight
gasoline, Low octane)
Air Air duct
55 5 55 5 Air cleaner
Air leakage from air duct
(Mass air flow sensor Ð
throttle body)
555 5
Throttle body, Throttle wireFE section
Air leakage from intake
manifold/Collector/GasketÐ
Crank-
ingBattery
111 1 11
11
SC section Alternator circuit
Starter circuit 3
Flywheel 6EM section
PNP switch 4Ð
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
Symptom Matrix Chart
EC-3104

SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Engine Cylinder head
55555 55 5
EM section Cylinder head gasket 4 3
Cylinder block
66666 66 64 Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mecha-
nismTiming chain
5 5 5 5 5 5 5 5 EM section Camshaft
Intake valve
3
Exhaust valve
Exhaust Exhaust manifold/Tube/
Muffler/Gasket
5 5 5 5 5 5 5 5 FE section
Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/
Oil filter/Oil gallery
55555 55 5MA section,
LC section
Oil level (Low)/Filthy oil
Cooling Radiator/Hose/Radiator filler
cap
55555 55 45LC section Thermostat 5
Water pump
Water gallery
Coolant level (low)/
Contaminated coolantMA section
1 - 6: The numbers refer to the order of inspection.
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
Symptom Matrix Chart
EC-3105

CONSULT-II Reference Value in Data Monitor
Mode
NEEC0042Remarks:
+Specification data are reference values.
+Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
(i.e., Adjust ignition timing with a timing light before monitoring IGN TIMING. Specification data might be displayed even when igni-
tion timing is not adjusted to specification. This IGN TIMING monitors the data calculated by the ECM according to the input signals
from the camshaft position sensor and other ignition timing related sensors.)
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED+Tachometer: Connect
+Run engine and compare tachometer indication with the CONSULT-II
value.Almost the same speed as the
CONSULT-II value.
MAS A/F SE-B1+Engine: After warming up
+Air conditioner switch: ªOFFº
+Shift lever: ªNº
+No-loadIdle 0.9 - 1.8V
2,500 rpm 1.9 - 2.3V
COOLAN TEMP/S+Engine: After warming up More than 70ÉC (158ÉF)
HO2S1 (B1)
+Engine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V¨Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)LEAN¨RICH
Changes more than 5 times
during 10 seconds.
HO2S2 (B1)
+Engine: After warming upRevving engine from idle to 3,000
rpm quickly0 - 0.3V¨Approx. 0.6 - 1.0V
HO2S2 MNTR (B1)LEAN¨RICH
VHCL SPEED SE+Turn drive wheels and compare speedometer indication with the CON-
SULT-II valueAlmost the same speed as the
CONSULT-II value
BATTERY VOLT+Ignition switch: ON (Engine stopped) 11 - 14V
THRTL POS SEN+Engine: After warming up
+Ignition switch: ON
(Engine stopped)Throttle valve fully closed 0.2 - 0.8V
Throttle valve fully opened 3.5 - 4.5V
START SIGNAL+Ignition switch: ON®START®ON OFF®ON®OFF
CLSD THL/P SW+Engine: After warming up
+Ignition switch: ON
(Engine stopped)Throttle valve: Idle position ON
Throttle valve: Slightly open OFF
CLSD THL POS+Engine: After warming up
+Ignition switch: ON
(Engine stopped)Throttle valve: Idle position ON
Throttle valve: Slightly open OFF
AIR COND SIG+Engine: After warming up, idle
the engineA/C switch: OFF OFF
A/C switch: ON (Compressor oper-
ates.)ON
P/N POSI SW+Ignition switch: ONShift lever: ªNº ON
Except above OFF
PW/ST SIGNAL+Engine: After warming up, idle
the engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is turned ON
IGNITION SW+Ignition switch: ON®OFF®ON ON®OFF®ON
INJ PULSE-B1+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 2.5 - 3.3 msec
2,000 rpm 2.4 - 3.2 msec
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
CONSULT-II Reference Value in Data Monitor Mode
EC-3106

MONITOR ITEM CONDITION SPECIFICATION
B/FUEL SCHDL+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 0.8 - 1.2 msec
2,000 rpm 0.8 - 1.2 msec
IGN TIMING+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle Approx. 15É BTDC
2,000 rpm More than 30É BTDC
IACV-AAC/V+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle Approx. 30%
2,000 rpm Ð
PURG VOL C/V+Engine: After warming up
+Air conditioner switch: OFF
+No-loadIdle 0%
2,000 rpm (More than 200 seconds
after starting engine)Ð
A/F ALPHA-B1+Engine: After warming upMaintaining engine speed at 2,000
rpm50 - 159%
AIR COND RLY+Air conditioner switch: OFF®ON OFF®ON
FUEL PUMP RLY+Ignition switch is turned to ON (Operates for 5 seconds)
+Engine running and crankingON
+Except as shown above OFF
HO2S1 HTR (B1)+Engine speed: Below 3,600 rpm ON
+Engine speed: Above 3,600 rpm OFF
HO2S2 HTR (B1)+Engine speed: Idle after driving for 2 minutes at 70 km/h (43 MPH) or
moreON
+Ignition switch: ON (Engine stopped) OFF
CAL/LD VALUE+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 9.5 - 34.0%
2,500 rpm 13.9 - 24.9%
ABSOL TH´P/S+Engine: After warming up,
engine stopped
+Ignition switch: ONThrottle valve: fully closed 0.0%
Throttle valve: fully opened Approx. 80%
MASS AIRFLOW+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: ªNº
+No-loadIdle 0.9 - 5.8 g´m/s
2,500 rpm 7.5 - 13.2 g´m/s
ABSOL PRES/SE+Engine: More than 5 seconds after starting engine (After warming up) Approx. 1.2V
Major Sensor Reference Graph in Data Monitor
Mode
NEEC0043The following are the major sensor reference graphs in ªDATA MONITORº mode.
(Select ªMANU TRIGº in ªDATA MONITORº with CONSULT-II. ªTrigger Pointº is set to 100%, ªRecording
Speedº is set to MAX.)
THRTL POS SEN, ABSOL TH´P/S, CLSD THL POSNEEC0043S01Below is the data for ªTHRTL POS SENº, ªABSOL TH´P/Sº and ªCLSD THL POSº when depressing the accel-
erator pedal with the ignition switch ON.
The signal of ªTHRTL POS SENº and ªABSOL TH´P/Sº should rise gradually without any intermittent drop or
rise after ªCLSD THL POSº is changed from ªONº to ªOFFº.
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
CONSULT-II Reference Value in Data Monitor Mode
EC-3107

SEF306Y
ENG SPEED, MAS A/F SE-B1, THRTL POS SEN, HO2S2 (B1), HO2S1 (B1), INJ PULSE-B1NEEC0043S02Below is the data for ªENG SPEEDº, ªMAS A/F SE-B1º, ªTHRTL POS SENº, ªHO2S2 (B1)º, ªHO2S1 (B1)º and
ªINJ PULSE-B1º when revving engine quickly up to 4,800 rpm under no load after warming up engine to nor-
mal operating temperature.
Each value is for reference, the exact value may vary.
SEF241Y
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
Major Sensor Reference Graph in Data Monitor Mode
EC-3108

SEF242YA
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
Major Sensor Reference Graph in Data Monitor Mode
EC-3109

LEC106A
ECM Terminals and Reference ValueNEEC0044PREPARATIONNEEC0044S011. ECM is located behind the instrument lower cover. For this
inspection:
+Remove instrument lower cover.
AEC913
2. Remove ECM harness protector.
SEF367I
3. Perform all voltage measurements with the connector con-
nected. Extend tester probe as shown to perform tests easily.
+Open harness securing clip to make testing easier.
+Use extreme care not to touch 2 pins at one time.
+Data is for comparison and may not be exact.
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3110

ECM HARNESS CONNECTOR TERMINAL LAYOUTNEEC0044S02
SEF533P
ECM INSPECTION TABLENEEC0044S03Specification 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 damage 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)
1 W/PU Ignition signal[Engine is running]
+Warm-up condition
+Idle speed0 - 0.5V
SEF186T
[Engine is running]
+Engine speed is 2,000 rpm0.2 - 1.0V
SEF187T
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION
KA24DE (EURO OBD)
ECM Terminals and Reference Value
EC-3111