Nissan Sentra B18 (2020-2025) Service Manual: How to Follow Trouble Diagnoses
Description
Description
Note:
Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing.
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Before performing trouble diagnoses, read the “Work Flow� in each section.
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After repairs, re-check that the problem has been completely eliminated.
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Refer to Component Parts and Harness Connector Location for the Systems described in each section for identification/location of components and harness connectors.
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When checking circuit continuity, ignition switch should be OFF.
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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.
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Before checking voltage at connectors, check battery voltage.
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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
How to Follow Test Groups in Trouble Diagnosis
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Test group number and test group title
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Test group number and test group title are shown in the upper portion of each test group.
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Work and diagnosis procedure
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Start a trouble diagnosis using procedures indicated in enclosed test groups.
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Questions and results
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Questions and required results are indicated in test group.
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Action
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Next action for each test group is indicated based on result of each question.
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Key to Symbols Signifying Measurements or Procedures
Key to Symbols Signifying Measurements or Procedures


Other materials:
Forward-facing child restraint installation using the seat belts
WARNING
The three-point seat belt with Automatic Locking Retractor (ALR) must always
be used when installing a child restraint in the Nissan Sentra.
Failure to activate and use the ALR mode will prevent the child restraint
from being properly secured. An unsecured or unstable restraint may tip ...
Preparation. Preparation
Preparation
Special Service Tools
Special Service
Tools
The actual shape of the tools may differ from those
illustrated here.
Tool number
(TechMate No.)
Tool name
...
Warning Chime System. Symptom Diagnosis
Warning Chime System Symptoms. Symptom Table
Symptom Table
Symptom Table
CAUTION:
Perform the self-diagnosis with CONSULT before
the symptom diagnosis. Perform the trouble diagnosis if any DTC is
detected.
...