Nissan Altima 2007-2012 Service Manual: Component diagnosis

Function diagnosis
EPS SYSTEM System Diagram CONTROL DIAGRAM System Description • The EPS system controls the power steering solenoid valve through the power steering control unit. • The valve driving vol ...

Power supply and ground circuit
Description • EPS system functions by ignition power supply. Diagnosis Procedure 1.CHECK POWER SUPPLY 1. Turn the ignition switch OFF. 2. Disconnect power steering control unit harness conn ...

Other materials:

P1550 battery current sensor
Description The power generation voltage variable control enables fuel consumption to be decreased by reducing the engine load which is caused by the power generation of the generator. The battery current sensor is installed to the battery cable at the negative terminal. The sensor measures ...

Body control system
System Description OUTLINE • BCM (body control module) controls the various electrical components. It inputs the information required to the control from CAN communication and the signal received from each switch and sensor. • BCM has combination switch reading function for reading the ...

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 diagnostic information including: The above information can be checked using procedures listed in ...