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.
ECU diagnosis
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 ...
Precaution
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:
Intelligent key system/engine start function symptoms
Symptom Table
Engine cannot be started with all Intelligent Keys.
CAUTION:
• Follow Trouble Diagnosis Flowchart referring to “SEC-10, "Work Flow"”.
Determine malfunctioning
condition before performing this diagnosis.
• Check that vehicle is under the condition shown in “ ...
B2607 steering lock relay
Description
BCM requests to IPDM E/R to supply power to electronic steering column lock.
IPDM E/R sends status of
steering lock unit back to BCM.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2607 is displayed with DTC U1000, first perform the trouble diagnosis
for DTC U1000. Refer to
...
Noise
Component Function Check
SYMPTOM: Noise
INSPECTION FLOW
*1 HAC-5, "Operational Check"
*2 EM-16, "Checking Drive Belts"
(QR25DE) or EM-121, "Checking
Drive Belts" (VQ35DE)
*3 HAC-87, "Performance Chart"
*4 HA-45, "Removal and Installation for
E ...
