GENERAL INTRODUCTION/SAFETY INSTRUCTIONS AND READINESS TO WORK
1–19
2.
INTRODUCTION TO TROUBLE SHOOTING
(1)
This document covers the trouble shooting steps 2 and 3 listed below.
(2)
Prior check
(1) Hearing
"Step 1"
Identify a fact through adequate hearings on the situation
and environment where a trouble has occurred.
(2) Prior check
(3) Reproducing technique
"Step 2"
Conduct a diagnosis inspection, a symptom check, a func-
tional inspection and a basic inspection to identify a symp-
tom. If a symptom check does not gain enough
reproducibility, use a reproducing technique.
(4) Trouble shooting for each
diagnosis code
(5) Trouble shooting for each
trouble symptom
"Step 3"
Sort the inspection results obtained from the step 2 and con-
duct an systematized inspection in accordance with the pro-
cedures for trouble shooting for each trouble symptom.
(6) Verification test
"Step 4"
Verify that the same trouble will not occur after trouble shoot-
ing. If a trouble is not reproducible enough, conduct a verifi-
cation test under the reproduced conditions and
environment.
Prior check
• Take the following prior check steps.
Diagnosis inspection
diagnosis deletion
trouble symptom verification (use a reproducing
technique if not reproducible.)
diagnosis recheck
• Prior to a reproduction test, identify a system suspected to have a trouble, attach a tester and
other apparatuses and then conduct both a symptom check and an examination on a sus-
pected trouble. For a suspected cause of a trouble symptom, the trouble shooting chart.
• Instantaneous occurrence of a trouble symptom will also trigger a failure code. If no troubles
are observed, use a reproducing technique in performing each trouble shooting activity.
• Trouble symptom verification
If not reproducible, take the steps 2,
3 and
4.
If not reproducible, use a reproducing technique (e.g. adjust external conditions and inspect
each wire harness and connector part).