User's Guide
101, Boul. Roland-Therrien Bureau 500, 
 Longueuil, QC J4H 4B9, Canada 
Tel.450-442-7887, Fax 450-442-0605 
www.astus.com 
Astus QC25 - Hardware user Guide    7 / 13 
The information contained in this document is confidential 
and proprietary to Astus Inc. Any distribution or 
reproduction without prior authorization is prohibited. 
Do not connect the QC25 directly to the vehicle's 
OBD2  port  if it  interferes  with  the  driving  or  the 
safety of the driver and the passengers. See section 
4.3 for other installation options. 
3.  Secure the QC25 to the OBD2 connector using a tie wrap. 
Figure 4 - Suggested place (in green) to hold back with a tie wrap 










