Nissan Altima 2007-2012 Service Manual: U1201 AV control unit
Description
Refer to AV-240, "System Description".
DTC Logic
DTC DETECTION LOGIC
U1200 AV control unit
Description
Refer to AV-240, "System Description".
DTC Logic
DTC DETECTION LOGIC
...
U1204 GPS comm
Description
Refer to AV-240, "System Description".
DTC Logic
DTC DETECTION LOGIC
...
Other materials:
STRG 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 steering angle sensor for damage,
bend and loose connection
(unit side and connector side). ...
Inspection and adjustment
Preliminary Check
1.TIRE PRESSURE
Check all tire pressures. Refer to WT-70, "Tire".
Do tire pressures match specification?
YES >> GO TO 2
NO >> Adjust tire pressure to specified value.
2.LOW TIRE PRESSURE WARNING LAMP
Check low tire pressure warning lamp activation.
...
Fuel injector
Description
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injector
is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
...