Nissan Altima 2007-2012 Service Manual: Engine control system symptoms

Symptom Table

SYSTEM — BASIC ENGINE CONTROL SYSTEM

1 - 6: The numbers refer to the order of inspection.

(continued on next table)

SYSTEM — ENGINE MECHANICAL & OTHER

1 - 6: The numbers refer to the order of inspection.

    Normal operating condition
    Description FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED) If the engine speed is above 1,800 rpm under no load (for example, the selector lever position is neutral and engine speed is over ...

    Other materials:

    Spiral cable
    Removal and Installation REMOVAL CAUTION: • Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least three minutes. • Do not use air tools or electric tools for servicing. • Do not disassemble the spiral cable. • Do not allow oil, grease, ...

    Key slot
    Diagnosis Procedure 1.CHECK KEY SLOT POWER SUPPLY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect key slot connector. 3. Check voltage between slot connector and ground. Is the inspection result normal? YES >> GO TO 2 NO >> Repair or replace key slot power supply circui ...

    Filament
    Inspection and Repair INSPECTION 1. When measuring voltage, wrap tin foil around the top of the negative probe. Then press the foil against the wire with your finger. 2. Attach probe circuit tester (in Volt range) to middle portion of each filament. 3. If a filament is burned out, circuit ...