Yar, following is the workshop manual of 2004 Altis. But you will find a lot of help in it.
i'm sorry i don't have the 1.6L service manual.
For chassis and complete body service manual use following link, (Covers 1ZZ-FE 1.8L engine)
RapidShare AG, Cham, Switzerland
For engine use following link. (Covers 2NZ-FE 1.3L engine, used in Corolla)
http://rapidshare.com/files/433328846/yaris_manual.rar