Nissan Altima Owners Manual: In case of emergency

Engine block heater (if so equipped)
Engine block heaters are used to assist with cold temperature starting. The engine block heater should be used when the outside temperature is 20F (-7C) or lower. WARNING ● Do not use y ...

Emergency engine shut off
To shut off the engine in an emergency situation while driving, perform the following procedure: Rapidly push the push-button ignition switch 3 consecutive times in less than 1.5 seconds, or P ...

Other materials:

Ignition signal
Description The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit. Component Function Check 1.INSPECTION ...

P0448 Evap canister vent control valve
Description The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the ca ...

P0452 evap control system pressure sensor
Description The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously condu ...