Nissan Altima 2007-2012 Service Manual: Engine control system symptoms
Symptom Table
SYSTEM — BASIC ENGINE CONTROL SYSTEM
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
1 - 6: The numbers refer to the order of inspection.
Normal operating condition
Description
FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)
If the engine speed is above 1,400 rpm under no load (for example, the
selector lever position is P or N and
engine speed is over 1 ...
Other materials:
BCM branch line circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the BCM for damage, bend and loose
connection (unit side and
connector side).
Is the inspec ...
P0720 vehicle speed sensor cvt (secondary
speed sensor)
Description
The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)]
detects the revolution of the
CVT output shaft and emits a pulse signal. The pulse signal is transmitted to
the TCM, which converts it into
vehicle speed.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMAT ...
Diagnosis system (AV control unit)
Diagnosis Description
DESCRIPTION
• Diagnosis function consists of the self-diagnosis mode performed
automatically and the CONFIRMATION/
ADJUSTMENT mode operated manually.
• Self-diagnosis mode checks for connections between the units constituting this
system, analyzes each individual ...