Nissan Altima 2007-2012 Service Manual: Component diagnosis

On board diagnostic (OBD) System
Diagnosis Description INTRODUCTION The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actuators. The ECM also records various emission-related di ...

Trouble diagnosis - specification value
Description The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONITOR” mode of CONSULT-III during normal operation of the Engine Contr ...

Other materials:

Reporting safety defects
For USA If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying NISSAN. If NHTSA receives similar complaints, it may open an inv ...

Conditions the remote start will not work
The remote start will not operate if any of the following conditions are present: ● The ignition switch is placed in the ON position. ● The hood is not securely closed. ● The hazard warning lights are on. ● The I–Key Indicator Light remains solid in the vehicle inform ...

P1421 Cold start control
Description ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC P1421 is displayed ...