Nissan Altima (L32) 2007-2012 Service Manual: Symptom diagnosis
UNBALANCE STEERING WHEEL TURNING
FORCE (TORQUE VARIATION)
Description
• Hard steering when fully turning the steering wheel.
• Light steering when driving at a high speed.
Diagnosis Procedure
1.CHECK SYSTEM FOR POWER SUPPLY AND GROUND
Perform trouble diagnosis for power supply and ground circuit. Refer to
STC-6, "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK SYSTEM FOR VEHICLE SPEED SIGNAL
Perform trouble diagnosis for vehicle speed signal. Refer to STC-13,
"Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK SYSTEM FOR ENGINE SPEED SIGNAL
Perform trouble diagnosis for engine speed signal. Refer to STC-10,
"Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK SYSTEM FOR POWER STEERING SOLENOID VALVE
Perform trouble diagnosis for power steering solenoid valve. Refer to STC-8,
"Diagnosis Procedure".
Is the inspection result normal?
YES >> Perform the symptom diagnosis for the steering system. Refer to ST-3,
"NVH Troubleshooting
Chart".
NO >> Repair or replace damaged parts.
POWER STEERING CONTROL UNIT
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
CAUTION:
When using circuit tester or oscilloscope to measure voltage for inspection, be
sure not to extend for ...
Precautions for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT
PRE-TENSION ...
Other materials: Hood
Pull the hood lock release handle 1 located
below the driver's side instrument
panel; the hood springs up slightly.
To open the hood, push the lever 2 underneath
the front of the hood upwards
with your fingertips as illustrated and
raise the hood.
Remove the support rod from the clamp 3.
...
LATCH (Lower Anchors and Tethers for
CHildren) system
LATCH system anchor locations
Your vehicle is equipped with special anchor
points that are used with LATCH system
compatible child restraints. This system
may also be referred to as the ISOFIX
or ISOFIX compatible system. With this system,
you do not have to use a vehicle seat
belt to secure the ch ...
Vehicle loading information
WARNING
It is extremely dangerous to
ride in a cargo area inside a vehicle.
In a collision, people riding
in these areas are more
likely to be seriously injured or
killed.
Do not allow people to ride in
any area of your vehicle that is
not equipped with seats and
seat belts.
Be sure ever ...
ECU diagnosis
Precaution