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co1. Check battery voltage. Must be 12.2 or higher.digital fluke meter. Is voltage OK?No-+Yes!ENGINE ELECTRICALPower Up Testing - Early Type II, 1991-1992 500'sUse aCharge, service and test battery; or replace battery.2. Check voltage between ECU Orange wire and Check fuse link, key switch RlGR to RfIN, and all wires andground, and between Y/Blk and ground. With key switch connections between battery to fuse link; fuse link to keyin the spring loaded position, voltage should read 12.2 or switch, key switch to ECU. Are connections and componentshigher. Is voltage OK?OK?No-+ Yes - See Block 3Yes!No!3. Test self shut-off relay and circuits to relay. Are Repair and/or replace components or wires as needed andcircuits and relay OK?retest.No-+Yes!4. Replace ECU and retest system.o".c..4.39 8/94
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