Key On-Engine Off Self-Test

Connect voltmeter and insert jumper wire to self-test input terminal and output terminal No. 2. This activates the self-test. Turn ignition switch to "Run" position. DO NOT  depress throttle during test. Observe and record On Demand and Continuous codes. When more than 1 code is displayed, always repair problems in the order that codes were displayed. Repair codes as follows: