Nissan Altima 2007-2012 Service Manual: Component diagnosis
- Power supply and ground circuit
- Power steering solenoid valve
- Engine speed signal circuit
- Vehicle speed signal circuit
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 ...