October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Quick Test: Description

Following procedures are functional tests of OBD-II system. These 5 basic test steps must be followed in sequence to avoid misdiagnosis:

Visual Check
Equipment Hookup
KOEO (Key On Engine Off) SELF-TEST
KOER (Key On Engine Running) SELF-TEST
Continuous Memory Self-Test