8-43Replace the fuelsender.NO2. Fuel sender Disconnect the fuel sender coupler from thewire harness. Drain the fuel from the fuel tank and removethe fuel sender from the fuel tank. Check the fuel sender for continuity.YESTester positive probe greenTester negative probe black1 Is the fuel sender OK?23. VoltageConnect the pocket tester (DC 20 V) to the me-ter assembly coupler (wire harness side) asshown.Tester positive probe green/whiteTester negative probe black/blue12YESThe wiring circuit fromthe main switch to themeter assembly cou-pler is faulty and mustbe repaired.NOThis circuit OK. Set the main switch to “ON”. Measure the voltage (12 V). Is the voltage within specification?NOEAS008057.The clock fails to come on.1. VoltageConnect the pocket tester (20 V DC) to theclock coupler (clock side) as shown.YESTester positive probe green/yellowTester negative probe ground1Set the main switch to “ON”.Measure the voltage (12 V).Is the voltage within specification?The wiring circuit from the mainswitch to the clock coupler(clock side) is faulty and must berepaired.2. ClockCheck that the clock is operating properly.When setting the clock after its power sourcehas been disconnected (e.g., when the batteryis removed), first set the clock to 1:00 AM andthen to the correct time.Is the clock operating properly?YESReplace the clock.NOThis circuit is OK.SIGNALING SYSTEM ELEC