Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSNISSAN-DATSUN2004ALTIMA S, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM - 2.5L
2004 Nissan-Datsun Altima S, Automatic
Engine Control System - 2.5L
2004 Nissan-Datsun Altima S, AutomaticSECTION Engine Control System - 2.5L
- Index For DTC
- Precautions
- Preparation
- Engine Control System
- System Diagram
- Vacuum Hose Drawing
- System Chart
- Multiport Fuel Injection (MFI) System
- Electronic Ignition (El) System
- Air Conditioning Cut Control
- Fuel Cut Control (at No Load and High Engine Speed)
- CAN communication
- Basic Service Procedure
- On Board Diagnostic (OBD) System
- Introduction
- Two Trip Detection Logic
- Emission-related Diagnostic Information
- Emission-Related Diagnostic Information Items
- DTC And 1ST Trip DTC
- How to Read DTC and 1st Trip DTC
- Freeze Frame Data And 1ST Trip Freeze Frame Data
- System Readiness Test (SRT) Code
- How to Display SRT Code
- How to Set SRT Code
- Test Value And Test Limit (GST Only - Not Applicable To Consult-II)
- How To Erase Emission-Related Diagnostic Information
- NVIS (Nissan Vehicle Immobilizer System - NATS)
- Malfunction Indicator Lamp (MIL)
- OBD System Operation Chart
- Relationship Between Mil, 1ST Trip DTC, DTC, And Detectable Items
- Summary Chart
- Relationship Between Mil, DTC, 1ST Trip DTC And Driving Patterns For "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Explanation For Driving Patterns For "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Relationship Between Mil, DTC, 1ST Trip DTC And Driving Patterns Except For "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Explanation For Driving Patterns Except For "Misfire < Exhaust Quality Deterioration >", "Fuel Injection System"
- Trouble Diagnosis
- Trouble Diagnosis Introduction
- DTC Inspection Priority Chart
- Fail-safe Chart
- Basic Inspection
- Symptom Matrix Chart
- Engine Control Component Parts Location
- Circuit Diagram
- ECM Harness Connector Terminal Layout
- ECM Terminals and Reference Value
- CONSULT-II Function
- Generic Scan Tool (GST) Function
- CONSULT-II Reference Value in Data Monitor
- Major Sensor Reference Graph in Data Monitor Mode
- Trouble Diagnosis - Specification Value
- Trouble Diagnosis For Intermittent Incident
- Power Supply And Ground Circuit
- DTC U1000, U1001: Can Communication Line
- DTC P0011: IVT Control
- DTC P0037, P0038: Ho2S2 Heater
- DTC P0101: Map Sensor
- DTC P0102, P0103: MAF Sensor
- DTC P0112, P0113: IAT Sensor
- DTC P0117, P0118: ECT Sensor
- DTC P0122, P0123: TP Sensor
- DTC P0125: ECT Sensor
- DTC P0127: IAT Sensor
- DTC P0128: Thermostat Function
- DTC P0138: Ho2S2
- DTC P0139: Ho2S2
- DTC P0171: Fuel Injection System Function
- DTC P0172: Fuel Injection System Function
- DTC P0181: Fit Sensor
- DTC P0182, P0183: Fit Sensor
- DTC P0222, P0223: TP Sensor
- DTC P0300 - P0304: Multiple Cylinder Misfire, No. 1 - 4 Cylinder Misfire
- DTC P0327, P0328: KS
- DTC P0335: CKP Sensor (Pos)
- DTC P0340: CMP Sensor (Phase)
- DTC P0420: Three Way Catalyst Function
- DTC P0441: EVAP Control System
- DTC P0442: EVAP Control System
- DTC P0444, P0445: EVAP Canister Purge Volume Control Solenoid Valve
- DTC P0447: EVAP Canister Vent Control Valve
- DTC P0451: EVAP Control System Pressure Sensor
- DTC P045: EVAP Control System Pressure Sensor
- DTC P0453: EVAP Control System Pressure Sensor
- DTC P0455: EVAP Control System
- DTC P0456: EVAP Control System
- DTC P0460: Fuel Level Sensor
- DTC P0461: Fuel Level Sensor
- DTC P0462, P0463: Fuel Level Sensor
- DTC P0500: VSS
- DTC P0506: ISC System
- DTC P0507: ISC System
- DTC P0550: PSP Sensor
- DTC P0605: ECM
- DTC P1031, P1032: A/F Sensor 1 Heater
- DTC P1065: ECM Power Supply
- DTC P1111: IVT Control Solenoid Valve
- DTC P1121: Electric Throttle Control Actuator
- DTC P1122: Electric Throttle Control Function
- DTC P1124, P1126: Throttle Control Motor Relay
- DTC P1128: Throttle Control Motor
- DTC P1146: Ho2S2
- DTC P1147: Ho2S2
- DTC P1148: Closed Loop Control
- DTC P1217: Engine Over Temperature
- DTC P1225: TP Sensor
- DTC P1226: TP Sensor
- DTC P1229: Sensor Power Supply
- DTC P1271: A/F Sensor 1
- DTC P1272: A/F Sensor 1
- DTC P1273: A/F Sensor 1
- DTC P1274: A/F Sensor 1
- DTC P1276: A/F Sensor 1
- DTC P1278: A/F Sensor 1
- DTC P1279: A/F Sensor 1
- DTC P1444: EVAP Canister Purge Volume Control Solenoid Valve
- DTC P1446: EVAP Canister Vent Control Valve
- DTC P1564: ASCD Steering Switch
- DTC P1572: ASCD Brake Switch
- DTC P1574: ASCD Vehicle Speed Sensor
- DTC P1706: PNP Switch
- DTC P1800: VIAS Control Solenoid Valve
- DTC P1805: Brake Switch
- DTC P2122, P2123: App Sensor
- DTC P2127, P2128: App Sensor
- DTC P2135: TP Sensor
- DTC P2138: App Sensor
- Ignition Signal
- VIAS
- Injector Circuit
- Fuel Pump Circuit
- Refrigerant Pressure Sensor
- Electrical Load Signal
- ASCD Brake Switch
- ASCD Indicator
- Mil And Data Link Connector
- Evaporative Emission System
- On Board Refueling Vapor Recovery (ORVR)
- Positive Crankcase Ventilation
- Automatic Speed Control Device (ASCD)
- Service Data And Specifications (SDS)
- Fuel Pressure
- Idle Speed and Ignition Timing
- Calculated Load Value
- Mass Air Flow Sensor
- Intake Air Temperature Sensor
- Engine Coolant Temperature Sensor
- Air Fuel Ratio (A/F) Sensor 1 Heater
- Heated Oxygen sensor 2 Heater
- Air-fuel ratio (A/F) sensor 1
- Crankshaft Position Sensor (POS)
- Camshaft Position Sensor (PHASE)
- Throttle Control Motor
- Injector
- Fuel Pump
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.