GENERAL
E485C
W5-1-4
5.
How to read troubleshooting
(1)
Failure diagnosis in this manual describes Step 2 and Step 3 below:
(2)
Pre-inspection
(1) Question
"Step 1"
Hear from customers for conditions and environments of
failures and check the fact.
(2) Pre-inspection
(3) Reproduction method
"Step 2"
Perform diagnosis inspection, status inspection,
function inspection and basic inspection. Check the
failure status. If it is difficult to reproduce the problem
with status inspection, use the reproduction method.
(4) Troubleshooting for each
diagnosis code
(5) Troubleshooting for each
failure status
"Step 3"
Summarize inspection results obtained from Step 2.
Perform inspection systematically according to
troubleshooting procedures for each diagnosis code or
failure status.
(6) Confirmation test
"Step 4"
Check if failure occurs again after repair. If it is difficult to
reproduce a failure, perform the confirmation test under
the conditions and environment of the failure.
Pre-
inspection
•
Pre-inspection is performed in the following steps:
Diagnosis inspection
→
Diagnosis deletion
→
Failure status check (Use the reproduction
method if not reproduced.)
→
Diagnosis reconfirmation
•
Estimate the failure system before the reproduction test. Attach a tester and evaluate
estimated failure together with failure status. Refer to the troubleshooting chart for
estimated cause of a failure.
•
An error code is displayed if a failure occurs instantaneously. If any specific failure is not
found, perform troubleshooting using the reproduction method.
•
Failure status check
If failure is reproduced, perform Step 2
→
Step 3
→
Step 4.
If failure is not reproduced, use the reproduction method (simulation of external
conditions or check of each wire harness and connector, etc.)
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