Nissan Altima 2007-2012 Service Manual: ECU diagnosis
AIR CONDITIONER CONTROL Reference Value
VALUES ON THE DIAGNOSIS TOOL
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram - Air Conditioner Control (Manual) - Coupe
Wiring Diagram - Air Conditioner Control (Manual) - Sedan
Power supply and ground circuit for front air control
Description
FRONT AIR CONTROL
The front air control has a built-in microcomputer which processes
information sent from temperature control dial and various switches
needed for air conditioner ope ...
Other materials:
Meter buzzer circuit
Description
• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted
from various units.
Component Function Check
1. CHECK OPERATION OF METER BUZZER
1. Select “BUZZER” of “BCM” o ...
Vin registration
Description
VIN Registration is an operation to register VIN in ECM. It must be performed
each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection &
Maintenance (I/M).
Special Repair Requirement
1.CHECK VIN
Check the VIN of ...
P0451 evap control system pressure
sensor
Description
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pressure
increases.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously con ...