2001 NISSAN PICK-UP engine overheat

DTC Confirmation Procedure .......................... 3308
Diagnostic Procedure....................................... 3309
DTC P1143 HO2S1.............................................. 3310
Component Description ................................... 3310
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3310
ECM Terminals and Reference Value ............. 3310
On Board Diagnosis Logic ............................... 3311
DTC Confirmation Procedure .......................... 3311
Overall Function Check ................................... 3312
Diagnostic Procedure....................................... 3312
DTC P1144 HO2S1.............................................. 3317
Component Description ................................... 3317
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3317
ECM Terminals and Reference Value ............. 3317
On Board Diagnosis Logic ............................... 3318
DTC Confirmation Procedure .......................... 3318
Overall Function Check ................................... 3319
Diagnostic Procedure....................................... 3319
DTC P1146 HO2S2.............................................. 3324
Component Description ................................... 3324
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3324
ECM Terminals and Reference Value ............. 3324
On Board Diagnosis Logic ............................... 3324
DTC Confirmation Procedure .......................... 3325
Overall Function Check ................................... 3326
Wiring Diagram ................................................ 3327
Diagnostic Procedure....................................... 3328
DTC P1147 HO2S2.............................................. 3334
Component Description ................................... 3334
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3334
ECM Terminals and Reference Value ............. 3334
On Board Diagnosis Logic ............................... 3334
DTC Confirmation Procedure .......................... 3335
Overall Function Check ................................... 3336
Wiring Diagram ................................................ 3337
Diagnostic Procedure....................................... 3338
DTC P1217 Engine Over Temperature............. 3344
On Board Diagnosis Logic ............................... 3344
Overall Function Check ................................... 3344
Diagnostic Procedure....................................... 3345
Main 11 Causes of Overheating ...................... 3348
DTC P1336 CKP Sensor (OBD)......................... 3349
Component Description ................................... 3349
ECM Terminals and Reference Value ............. 3349
On Board Diagnosis Logic ............................... 3350
DTC Confirmation Procedure .......................... 3350
Wiring Diagram ................................................ 3351
Diagnostic Procedure....................................... 3352
DTC P1706 PNP Switch..................................... 3355
Component Description ................................... 3355CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3355
ECM Terminals and Reference Value ............. 3355
On Board Diagnosis Logic ............................... 3355
DTC Confirmation Procedure .......................... 3356
Overall Function Check ................................... 3357
Wiring Diagram ................................................ 3358
Diagnostic Procedure....................................... 3359
Ignition Signal..................................................... 3361
Component Description ................................... 3361
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3361
ECM Terminals and Reference Value ............. 3362
Wiring Diagram ................................................ 3363
Diagnostic Procedure....................................... 3365
Injector................................................................. 3369
Component Description ................................... 3369
ECM Terminals and Reference Value ............. 3369
Wiring Diagram ................................................ 3370
Diagnostic Procedure....................................... 3371
Start Signal......................................................... 3374
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3374
ECM Terminals and Reference Value ............. 3374
Wiring Diagram ................................................ 3375
Diagnostic Procedure....................................... 3376
Fuel Pump........................................................... 3378
System Description .......................................... 3378
Component Description ................................... 3378
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3378
ECM Terminals and Reference Value ............. 3379
Wiring Diagram ................................................ 3380
Diagnostic Procedure....................................... 3381
Power Steering Oil Pressure Switch................ 3385
Component Description ................................... 3385
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3385
ECM Terminals and Reference Value ............. 3385
Wiring Diagram ................................................ 3386
Diagnostic Procedure....................................... 3387
IACV-FICD Solenoid Valve................................ 3389
Component Description ................................... 3389
ECM Terminals and Reference Value ............. 3389
Wiring Diagram ................................................ 3390
Diagnostic Procedure....................................... 3392
MI & Data Link Connectors............................... 3396
Wiring Diagram ................................................ 3396
Service Data and Specifications (SDS)............ 3398
Fuel Pressure Regulator .................................. 3398
Idle Speed and Ignition Timing ........................ 3398
Ignition Coil ...................................................... 3398
Mass Air Flow Sensor...................................... 3398
Engine Coolant Temperature Sensor .............. 3398
EC-3004

Fuel Pump........................................................ 3398
IACV-AAC Valve .............................................. 3398
Injector ............................................................. 3398
Throttle Position Sensor .................................. 3399
Heated Oxygen Sensor 1 Heater .................... 3399
Calculated Load Value..................................... 3399
Intake Air Temperature Sensor ....................... 3399
Heated Oxygen Sensor 2 Heater .................... 3399
Crankshaft Position Sensor (OBD) .................. 3399
YD25DDTi
TROUBLE DIAGNOSIS - INDEX........................ 3400
Alphabetical & Numerical Index for DTC......... 3400
PRECAUTIONS................................................... 3402
Precautions ...................................................... 3402
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM............................................................... 3405
Engine Control Component Parts Location ..... 3405
Circuit Diagram ................................................ 3408
System Diagram .............................................. 3409
System Chart ................................................... 3410
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION..................................... 3411
Fuel Injection Control System.......................... 3411
Fuel Injection Timing Control System.............. 3413
Air Conditioning Cut Control ............................ 3413
Fuel Cut Control (at no load & high engine
speed) .............................................................. 3413
Crankcase Ventilation System ......................... 3414
BASIC SERVICE PROCEDURE......................... 3415
Injection Tube and Injection Nozzle ................ 3415
Electronic Control Fuel Injection Pump ........... 3419
Air Bleeding...................................................... 3426
Water Draining ................................................. 3426
Accelerator Position Sensor Idle Position
Learning ........................................................... 3427
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION..................................................... 3428
DTC and MIL Detection Logic ......................... 3428
Diagnostic Trouble Code (DTC) ...................... 3428
Malfunction Indicator Lamp (MIL) .................... 3429
CONSULT-II ..................................................... 3434
TROUBLE DIAGNOSIS - INTRODUCTION........ 3440
Introduction ...................................................... 3440
Work Flow ........................................................ 3442
TROUBLE DIAGNOSIS - BASIC INSPECTION. 3444
Basic Inspection ............................................... 3444
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION..................................................... 3450
Symptom Matrix Chart ..................................... 3450
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3460Major Sensor Reference Graph in Data
Monitor Mode ................................................... 3462
ECM Terminals and Reference Value ............. 3463
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT............................................................. 3469
Description ....................................................... 3469
Diagnostic Procedure....................................... 3469
TROUBLE DIAGNOSIS FOR POWER SUPPLY3470
Main Power Supply and Ground Circuit .......... 3470
DTC 0103 COOLANT TEMP SEN...................... 3480
Description ....................................................... 3480
On Board Diagnosis Logic ............................... 3480
DTC Confirmation Procedure .......................... 3480
Wiring Diagram ................................................ 3481
Diagnostic Procedure....................................... 3482
DTC 0104 VEHICLE SPEED SEN...................... 3484
Description ....................................................... 3484
ECM Terminals and Reference Value ............. 3484
On Board Diagnosis Logic ............................... 3484
Overall Function Check ................................... 3485
Wiring Diagram ................................................ 3486
Diagnostic Procedure....................................... 3488
DTC 0208 OVER HEAT....................................... 3489
Description ....................................................... 3489
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3489
ECM Terminals and Reference Value ............. 3490
On Board Diagnosis Logic ............................... 3490
Overall Function Check ................................... 3491
Wiring Diagram ................................................ 3492
Diagnostic Procedure....................................... 3493
Main 12 Causes of Overheating ...................... 3500
DTC 0301 ECM 2, DTC 901 ECM 12................. 3501
Description ....................................................... 3501
On Board Diagnosis Logic ............................... 3501
DTC Confirmation Procedure .......................... 3501
Diagnostic Procedure....................................... 3502
DTC 0401 INTAKE AIR TEMPERATURE
SENSOR.............................................................. 3503
Component Description ................................... 3503
On Board Diagnosis Logic ............................... 3503
DTC Confirmation Procedure .......................... 3503
Wiring Diagram ................................................ 3505
Diagnostic Procedure....................................... 3506
DTC 0402 P9zFUEL TEMP SEN......................... 3508
Description ....................................................... 3508
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 3509
ECM Terminals and Reference Value ............. 3509
On Board Diagnosis Logic ............................... 3510
DTC Confirmation Procedure .......................... 3510
Wiring Diagram ................................................ 3511
Diagnostic Procedure....................................... 3513
EC-3005

Symptom Matrix ChartNEEC0041SYSTEM Ð ENGINE CONTROL SYSTEMNEEC0041S01
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 pump circuit 1 1 2 3 2 2 2 3 2 EC-3378
Fuel pressure regulator sys-
tem334444444 4EC-3034
Injector circuit 1 1 2 3 2 2 2 2 EC-3370
Evaporative emission system 3 3 4 444444 4EC-3029
Air Positive crankcase ventilation
system334444444 41EC-3032
Incorrect idle speed adjust-
ment33 1111 1EC-3035
IACV-AAC valve circuit 1 1 2 332222 2 2EC-3295
IACV-FICD solenoid valve
circuit223333333 3EC-3390
Ignition Incorrect ignition timing
adjustment3 3 1 1 1 1 1 1 EC-3035
Ignition circuit 1 1 2 2 2 2 2 2 EC-3361
Main power supply and ground circuit 2 2 3 3 3 3 3 2 3 2 EC-3124
Air conditioner circuit 2 2 3 333333 3 2HAsection
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-3102

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
Camshaft position sensor circuit22333 33 3EC-3270
Mass air flow sensor circuit11222 22 2EC-3143,
EC-3151
Heated oxygen sensor 1 circuit1232 22 2EC-3213,
3310
Engine coolant temperature sen-
sor circuit112323223 2EC-3165
Throttle position sensor circuit 1 222222 2EC-3170
Incorrect throttle position sensor
adjustment31 11111 1EC-3086
Vehicle speed sensor circuit 2 3 3 3 EC-3290
Knock sensor circuit 2 3 EC-3260
ECM 22333333333EC-3308,
3101
Start signal circuit 2EC-3375
PNP switch circuit 3 3 3 3 3 EC-3355
Power steering oil pressure switch
circuit2 3 3 EC-3386
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-3103

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

On Board Diagnosis LogicNEEC0202When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the CKP
sensor signal to vary, the ECM can determine that a misfire is occurring.
Sensor Input Signal to ECM ECM function
Crankshaft position sensor (OBD) Engine speed On board diagnosis of misfire
The misfire detection logic consists of the following two conditions.
1. One Trip Detection Logic (Three Way Catalyst Damage)
On the first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to
overheating, the MI will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level that will not damage the TWC, the MI will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MI will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MI will remain on.
If another misfire condition occurs that can damage the TWC, the MI will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration)
For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MI will only light
when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sensor
signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0300
0300+Multiple cylinders misfire.+Improper spark plug
+Insufficient compression
+Incorrect fuel pressure
+The injector circuit is open or shorted
+Injectors
+Intake air leak
+The ignition secondary circuit is open or shorted
+Lack of fuel
+Drive plate/Flywheel
+Heated oxygen sensor 1
+Incorrect distributor rotor P0301
0301+No. 1 cylinder misfires.
P0302
0302+No. 2 cylinder misfires.
P0303
0303+No. 3 cylinder misfires.
P0304
0304+No. 4 cylinder misfires.
SEF174Y
DTC Confirmation ProcedureNEEC0203CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch OFF and wait at least 5 seconds before
conducting the next test.
With CONSULT-II
1) Turn ignition switch ON, and select ªDATA MONITORº mode
with CONSULT-II.
2) Start engine and warm it up to normal operating temperature.
DTC P0300 - P0304 NO.4-1CYLINDER MISFIRE, MULTIPLE CYLINDER
MISFIRE
KA24DE (EURO OBD)
On Board Diagnosis Logic
EC-3251

On Board Diagnosis LogicNEEC1534If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
DTC No. Malfunction is detected when ...Check Items
(Possible Cause)
P1217
1217+Engine coolant temperature reaches an abnormally high
temperature.+Cooling fan (crankshaft driven)
Radiator hose
+Radiator
+Radiator cap
+Water pump
+Thermostat
+Engine coolant temperature sensor
For more information, refer to ªMAIN 11 CAUSES
OF OVERHEATINGº, EC-3348.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to MA section, ªChanging Engine
Coolantº. Also, replace the engine oil.
1) Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure
to use coolant with the proper mixture ratio. Refer to MA section, ªAnti-freeze Coolant Mixture
Ratioº.
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
SEF621W
Overall Function CheckNEEC1535WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high pressure fluid escaping from
the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by
turning it a quarter turn to allow built-up pressure to escape.
Then turn the cap all the way off.
1) Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-3345.
2) Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to ªDiagnos-
tic Procedureº, EC-3345.
DTC P1217 ENGINE OVER
TEMPERATURE
KA24DE (EURO OBD)
On Board Diagnosis Logic
EC-3344