DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerWheel sensors
Exploded View - Front Wheel Sensor
Front wheel sensor
Color line (slant line)
Front wheel sensor harness connector
Front
Removal and Installation - Front Wheel Sensor
CAUTION:
Be careful not to damage wheel sensor edge and sensor rotor
teeth.
When pul ...
P0300, P0301, P0302, P0303, P0304, P0305, P0306 misfire
DTC Logic
DTC DETECTION LOGIC
When a misfire occurs, engine speed will fluctuate. If the engine speed
fluctuates enough to cause the crankshaft
position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is
occurring.
The misfire detection logic consists of the followin ...
NVIS (NISSAN vehicle immobilizer system-nats)
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
The NVIS (NATS) is an anti-theft system. By registering an
Intelligent Key ID into the vehicle, it prevents the
engine being started by an unregistered Intelligent Key. It has a higher
protection again ...