A/T - Proper Control Unit Connection

90mazda03
Category Applicable Model/s
ST All Models
w/ EC-AT
Subject PROPER EC-AT CONNECTION
Bulletin No. 002/90
Issued 8/1/90
Revised



DESCRIPTION

When using the EC-AT Tester, it is critical that the 6-pin connector (with ground) that is located on the bottom left-hand corner of the EC-AT Tester body is never connected at the same time an adapter harness is being used.

Symptom codes should be retrieved from the Control Unit* first using the 6-pin connector; after disconnecting the 6-pin connector, the adapter harness can be used for further diagnosis.

* "Control Unit" refers to EC-AT Control Unit, except for 1990 626/MX-6 non-Turbo. For these models, the EC-AT Control Unit is incorporated into the Engine Control Unit.


REPAIR PROCEDURE


Please affix the attached label on the left side of the EC-AT Tester body, to the left of the adapter harness connector. On versions with the adapter, affix the label on the top panel of the adapter.