Nissan Altima 2007-2012 Service Manual: How to read wiring diagrams
Connector symbols
Most of connector symbols in wiring diagrams are shown from the terminal side.
• Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark.
• Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark.
• Certain systems and components, especially those related to OBD, may use a new style slide-locking type harness connector.
For description and how to disconnect, refer to PG section, “Description”, “HARNESS CONNECTOR”.
• Male and female terminals
Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams.
Sample/wiring diagram -example-
• For detail, refer to following GI-11, "Description".
Description
SWITCH POSITIONS
Switches are shown in wiring diagrams as if the vehicle is in the “normal” condition.
A vehicle is in the “normal” condition when:
• ignition switch is “OFF”, • doors, hood and trunk lid/back door are closed, • pedals are not depressed, and • parking brake is released.
MULTIPLE SWITCH
The continuity of multiple switch is described in two ways as shown below.
• The switch chart is used in schematic diagrams.
• The switch diagram is used in wiring diagrams.
How to follow trouble diagnoses
Description
NOTICE:
Trouble diagnoses indicate work procedures required to diagnose problems
effectively. Observe the following
instructions before diagnosing.
• Before performing trouble d ...
Abbreviations
Abbreviation List
The following ABBREVIATIONS are used:
...
Other materials:
Air fresheners
Most air fresheners use a solvent that could affect
the vehicle interior. If you use an air freshener,
take the following precautions:
● Hanging-type air fresheners can cause permanent
discoloration when they contact vehicle
interior surfaces. Place the air freshener
in a location that a ...
P0456 evap control system
DTC Logic
DTC DETECTION LOGIC
This diagnosis detects very small leaks in the EVAP line between fuel tank
and EVAP canister purge volume
control solenoid valve, using the intake manifold vacuum in the same way as
conventional EVAP small leak
diagnosis.
If ECM judges a leak which correspond ...
On-vehicle maintenance
FUEL SYSTEM
Inspection
Inspect fuel lines, fuel filler cap and fuel tank for improper attachment,
leaks, cracks, damage, loose connections, chafing or deterioration.
If necessary, repair or replace damaged parts.
Quick Connector
CAUTION:
• After connecting fuel tube quick connectors, m ...