Pages: 120 black and white Art: Over 100 photos, illustrations, charts Binding: Spiral bound Overview: Three books in one: 1) OBD Monitors, 2) EVAP operation and tests, and 3) Mode 6. This manual describes how the OBD II scan tool emissions test works; how monitors run to test the system; why you shouldn't always erase DTCs; how to use monitor definitions to run them faster; how the Evaporative Emisssion sytem (EVAP) works; how to test for EVAP leaks; how to use Mode 6 data to evaluate vehicle faults; why you need to be careful when using Mode 6.