GENERAL How to Use Service
HOW TO USE THE INSPECTION PROCEDURES
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The causes of a high frequency of problems occurring in electronic circuitry are generally
components, the ECU and the harnesses between in that These
follow this order, and they first try to discover a problem with a connector or a
17
Check trouble
I
Caution
After carrying out connector inspection, always be sure to
the connector as it was before.
so check the harness.
and check
HARNESS INSPECTION
Check for an open or short circuit in the harness between the terminals which were defective according
to the connector measurements. Carry out this inspection while referring to Volume 2 Electrical manual.
Here, “Check harness between power supply and terminal xx” also includes checking for blown fuses.
For inspection service points when there is a blown fuse, refer to “Inspection Service Points for a Blown
Fuse”.
MEASURES TO TAKE AFTER REPLACING THE ECU
If the trouble symptoms have not disappeared even after replacing the ECU, repeat the inspection procedure
from the beginning.
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