Nissan Altima 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
NO >> GO TO 2.
Function diagnosis
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 ...
Other materials:
Power window main switch
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH
Wiring Diagram
Fail Safe
FAIL-SAFE CONTROL
Switches to fail-safe control when malfunction is detected in encoder signal
that detects up/down speed and
direction of door glass ...
Precaution
Supplemental Restraint System (SRS) "AIR BAG"
and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
driver and front ...
Can communication circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system.
4. Check terminals and connectors for damage, bend and loose con ...