Nissan Altima (L32) 2007-2012 Service Manual: How to follow trouble diagnoses
Description
NOTICE: Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing.
• Before performing trouble diagnoses, read the “Work Flow” in each section.
• After repairs, re-check that the problem has been completely eliminated.
• Refer to Component Parts and Harness Connector Location for the Systems described in each section for identification/location of components and harness connectors.
• When checking circuit continuity, ignition switch should be OFF.
• Refer to the Circuit Diagram for quick pinpoint check.
If you need to check circuit continuity between harness connectors in more detail, such as when a sub-harness is used, refer to Wiring Diagram in each individual section and Harness Layout in PG section for identification of harness connectors.
• Before checking voltage at connectors, check battery voltage.
• After accomplishing the Diagnosis Procedures and Electrical Components Inspection, make sure that all harness connectors are reconnected as they were.
How to Follow Test Groups in Trouble Diagnosis
1. Test group number and test group title
• Test group number and test group title are shown in the upper portion of each test group.
2. Work and diagnosis procedure
• Start to diagnose a problem using procedures indicated in enclosed test groups.
3. Questions and results
• Questions and required results are indicated in test group.
4. Action
• Next action for each test group is indicated based on result of each question.
Key to Symbols Signifying Measurements or Procedures
How to use this manual
Description This volume explains “Removal, Disassembly, Installation, Inspection and Adjustment” and “Trouble Diagnoses”. Terms • The captions WARNING and CAUTION warn you of steps tha ...How to read wiring diagrams
Connector symbols Most of connector symbols in wiring diagrams are shown from the terminal side. • Connector symbols shown from the terminal side are enclosed by a single line and followed ...Other materials:
B2612 steering status
Description
There are 2 switches in the steering unit. IPDM E/R compares those 2 switches
conditions to judge the
present steering status and transmit the result to BCM via CAN communication.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2612 is displayed with DTC U1000, first perform th ...
P0607 ECM
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent error
detection ability. Many electronic
control units are equipped onto a vehicle, and each c ...
Function diagnosis
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
NVH Troubleshooting - Engine Noise
Use the Chart Below to Help You Find the Cause
of the Symptom
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified ...