Subaru 2009 IMPREZA Service Manual page 1248

Engine Condition Data
ENGINE (DIAGNOSTICS)
6. Engine Condition Data
A: ELECTRICAL SPECIFICATION
Content Specifications
17.6 — 35.64 (%): Idling
Engine load
13.2 — 26.73 (%): 2,500 rpm racing
Measuring condition:
• After engine is warmed up.
• Set the select lever in "P" range or "N" range, or the shift lever in neutral.
• Turn the A/C to OFF.
• Turn all the accessory switches to OFF.
EN(H4DOTC)(diag)-27