Nissan Sentra B18 (2020-2025) Service Manual: Engine Control System
Symptom Table
Symptom Table
SYSTEM — BASIC ENGINE CONTROL SYSTEM
|
SYMPTOM |
Reference page |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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) |
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|
Warranty symptom code |
AA |
AB |
AC |
AD |
AE |
AF |
AG |
AH |
AJ |
AK |
AL |
AM |
HA |
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|
Fuel |
Fuel pump circuit |
1 |
1 |
2 |
3 |
2 |
2 |
2 |
3 |
2 |
Component Function Check |
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|
Fuel pressure regulator system |
3 |
3 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
Work Procedure |
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|
Fuel injector circuit |
1 |
1 |
2 |
3 |
2 |
2 |
2 |
2 |
Component Function Check |
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|
Evaporative emission system |
3 |
3 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
System Description |
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|
Fuel rail pressure sensor circuit |
1 |
1 |
2 |
2 |
2 |
2 |
2 |
2 |
DTC Description |
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|
High pressure fuel pump circuit |
4 |
3 |
Component Function Check |
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|
Air |
Positive crankcase ventilation system |
3 |
3 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
1 |
POSITIVE CRANKCASE VENTILATION : Periodic Maintenance |
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|
Incorrect idle speed adjustment |
1 |
1 |
1 |
1 |
1 |
IDLE SPEED : Periodic Maintenance |
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|
Electric throttle control actuator |
1 |
1 |
2 |
3 |
3 |
2 |
2 |
2 |
2 |
2 |
2 |
DTC Description, DTC Description |
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|
Intake manifold runner control valve circuit |
4 |
4 |
DTC Description |
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|
Ignition |
Incorrect ignition timing adjustment |
3 |
3 |
1 |
1 |
1 |
1 |
1 |
1 |
IGNITION TIMING : Periodic Maintenance |
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|
Ignition circuit |
1 |
1 |
2 |
2 |
2 |
2 |
2 |
2 |
Component Function Check |
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|
Main power supply and ground circuit |
2 |
2 |
3 |
3 |
3 |
3 |
3 |
2 |
3 |
Diagnosis Procedure |
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|
Main power supply and ground circuit |
1 |
1 |
2 |
2 |
2 |
2 |
2 |
2 |
Diagnosis Procedure |
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|
Engine coolant temperature sensor circuit |
3 |
3 |
3 |
DTC Description |
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|
Air fuel ratio (A/F) sensor 1 circuit |
DTC Description, DTC Description, DTC Description |
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|
Throttle position sensor circuit |
2 |
2 |
DTC Description, DTC Description, DTC Description, DTC Description, DTC Description, |
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|
Accelerator pedal position sensor circuit |
3 |
2 |
1 |
DTC Description, DTC Description, DTC Description |
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|
Knock sensor circuit |
2 |
3 |
DTC Description |
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|
Engine oil temperature sensor circuit |
4 |
2 |
3 |
DTC Description |
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|
Crankshaft position sensor circuit |
2 |
2 |
DTC Description |
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|
Intake camshaft position sensor circuit |
3 |
2 |
DTC Description |
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|
Nissan Sentra Vehicle speed signal circuit |
2 |
3 |
3 |
3 |
DTC Description |
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|
ECM |
2 |
2 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
DTC Description |
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|
Electric intake valve timing control module circuit |
3 |
3 |
3 |
DTC Description, DTC Description |
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|
Electric intake valve timing control actuator circuit |
3 |
DTC Description, DTC Description |
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|
Exhaust valve timing control solenoid valve circuit |
3 |
2 |
1 |
3 |
2 |
2 |
3 |
3 |
DTC Description, DTC Description |
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|
Exhaust camshaft position sensor circuit |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
DTC Description |
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|
Transmission range switch |
3 |
3 |
3 |
3 |
3 |
DTC Description |
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|
Refrigerant pressure sensor circuit |
2 |
3 |
3 |
4 |
Component Function Check |
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|
Electrical load signal circuit |
3 |
Component Function Check |
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|
Air conditioner circuit |
2 |
2 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
2 |
Work Flow(Automatic air conditioner), Work Flow(Manual air conditioner) |
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|
ABS actuator and electric unit (control unit) |
4 |
Work Flow |
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1 - 6: The numbers refer to the order of inspection.
(continued on next table)
|
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 |
5 |
Inspection |
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|
Fuel piping |
5 |
5 |
5 |
5 |
5 |
5 |
Inspection |
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|
Vapor lock |
— |
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|
Valve deposit |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
— |
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|
Poor fuel (Heavy weight gasoline, Low octane) |
— |
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|
Air |
Air duct |
5 |
5 |
5 |
5 |
5 |
5 |
Inspection |
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|
Air cleaner |
Inspection |
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|
Air leakage from air duct (Mass air flow sensor — electric throttle control actuator) |
5 |
5 |
5 |
5 |
Inspection |
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|
Electric throttle control actuator |
Exploded View |
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|
Air leakage from intake manifold/Collector/Gasket |
— |
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|
Cranking |
Battery |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
Work Flow (With 165-DSS-5000P)(With 165-DSS-5000P), Work Flow (Without 165-DSS-5000P)(Without 165-DSS-5000P) |
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|
Generator circuit |
Work Flow (With 165-DSS-5000P)(With 165-DSS-5000P), Work Flow (Without 165-DSS-5000P)(Without 165-DSS-5000P) |
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|
Starter circuit |
3 |
Work Flow (With 165-DSS-5000P)(With 165-DSS-5000P), Work Flow (Without 165-DSS-5000P)(Without 165-DSS-5000P) |
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|
Signal plate |
6 |
Inspection |
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|
Engine |
Cylinder head |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
Inspection |
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|
Cylinder head gasket |
4 |
3 |
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|
Cylinder block |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
4 |
Inspection |
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|
Piston |
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|
Piston ring |
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|
Connecting rod |
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|
Bearing |
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|
Crankshaft |
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|
Valve mechanism |
Timing chain |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
Inspection |
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|
Camshaft |
Inspection |
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|
Intake valve timing control |
Component Inspection |
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|
Exhaust valve timing control |
Component Inspection |
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|
Intake valve |
3 |
Inspection |
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|
Exhaust valve |
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|
Exhaust |
Exhaust manifold/Tube/Muffler/Gasket |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
Inspection, Inspection |
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|
Three way catalyst |
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|
Lubrication |
Oil pan/Oil strainer/Oil pump/Oil filter/Oil gallery/Oil cooler |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
Inspection, Inspection, Inspection |
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|
Oil level (Low)/Filthy oil |
Inspection |
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|
Cooling |
Radiator/Hose/Radiator filler cap |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
4 |
5 |
Inspection, Inspection |
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|
Thermostat |
5 |
Inspection |
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|
Water pump |
Exploded View |
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|
Water gallery |
Inspection |
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|
Cooling fan |
5 |
Exploded View |
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|
Coolant level (Low)/Contaminated coolant |
Inspection |
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1 - 6: The numbers refer to the order of inspection.
Other materials:
Bcm
B2c21-23 Front Seat Belt Buckle Switch Lh
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen items
(Trouble diagnosis
content)
...
Door Lock and Unlock Switch
Driver Side
Component Function Check
Component Function
Check
CHECK FUNCTION
CONSULT
Ignition switch ON.
Select ″CDL LOCK SW″, ″CDL UNLOCK SW″ in ″Data
...
Preparation. Preparation
Preparation
Special Service Tool
Special Service Tool
The actual shape of the tools may differ from those
illustrated here.
Tool number
(TechMate No.)
Tool name
...