Engine Control System 1A-45
Engine Control System Diagnostic Chart
When receiving the vehicle from the customer in the
service factory, you must verify both the symptom and
failure data using the Engine Control System
Diagnostic Chart.
Legend
1. Symptom
2. Failure generation frequency and conditions
The reason why this sheet is needed is as follows.
1. The symptom may not be reproduced in the
service factory.
2. The customer complaint is always not represent
failure.
3. If failure conditions are not input to the responsible
technician correctly, unwanted repair man-hours
will be generated.
• The Engine Control System Diagnostic Chart helps
diagnostic, repair, and repair verification.
LNW21ASH001301
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Summary of Contents for 4HL1
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