Nissan Altima (L32) 2007-2012 Service Manual: Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER
It is also important to clarify customer complaints before inspection. First
of all, reproduce symptoms, and
understand them fully. Ask customer about his/her complaints carefully. In some
cases, it will be necessary to
check symptoms by driving vehicle with customer.
>> GO TO 2.
2.BASIC INSPECTION
1. Check the power steering fluid leakage and the power steering fluid level.
Refer to ST-8, "Inspection".
2. Check the drive belt tension. Refer to EM-16, "Checking Drive Belts"
(QR25DE), EM-121, "Checking
Drive Belts" (VQ35DE).
3. Check the power steering gear for damages, cracks and oil leakage. Refer to
ST-8, "Inspection".
4. Check the relief oil pressure. Refer to ST-12, "Inspection".
>> GO TO 3.
3.TROUBLE DIAGNOSIS FOR SYMPTOM
Perform the diagnosis by symptom. Refer to STC-21, "Description".
>> GO TO 4.
4.FINAL CHECK
Check the input/output standard values for the power steering control unit.
Are the power steering control unit input/output values within standard ranges
respectively?
YES >> Inspection End
EPS SYSTEM
System Diagram
CONTROL DIAGRAM
System Description
• The EPS system controls the power steering solenoid valve through the power
steering control unit.
• The valve driving vol ...