The accused was charged with operating a motor vehicle with a blood alcohol concentration exceeding 80 mg in 100 ml of blood.
During the breath testing procedure, the Intoxilyzer 8000C generated an 'ambient fail' message.
The accused argued that the breath technician failed to follow the instrument's manual, meaning the device was 'operated improperly' and the Crown could not rely on the presumption of identity under section 258(1)(c) of the Criminal Code.
The court found that the manual's instructions were not mandatory and that the technician's actions did not call into question the reliability of the breath sample results.
The presumption of identity applied, resulting in a finding of guilt.