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Front page says:
"2006 Subaru Impreza
Factory Service Manual".
Then there's a table of contents. Then this:
1. Foreword
A: FOREWORD
These manuals are used when performing maintenance,
repair, or diagnosis of the Subaru IMPREZA.
Applied model:
GD*****, GG***** from 2006 MY
The manuals contain the latest information at the
time of publication. Changes in specifications,
methods, etc. may be made without notice.
That would be the North American manual for US and Canadian Models and in PDF format multiple document/s.
So no 1.6L Engine info and only LHD and where many internal wiring systems are controlled by the Body Integrated Unit which is not fitted to UK cars of this vintage (MY08 on only)
From MY2006 all General & European manuals are supplied on CD in HTML (interactive) format with some PDF diagram (wiring etc)
Will PM you