SECTION V: TROUBLESHOOTINGTM 9-2350-256-20WARNINGRemove all jewelry such as rings, dog tags,bracelets, etc. If jewelry contacts a metalsurface a direct short may result in instantheating of tools, damage to equipment, andinjury or death to personnel.I Reconnect wire 421 to APU FUEL SHUTOFF switch.Disconnect wire 420B from ENGINE OIL PRESSUREgage. Place red lead of multimeter in wire 420B andblack lead to ground. Turn MASTER and APU FUELSHUTOFF switches ON and check for voltage. TurnMASTER and APU FUEL SHUTOFF switches OFF. Ifvoltage is present, go to step J. If voltage is not present,repair/replace wire 421/420B of APU control box wiringharness (see paragraph 13-7).J Reconnect wire 420B to ENGINE OIL PRESSURE gage.Disconnect wire 420 from ENGINE OIL PRESSUREgage. Place red lead of multimeter on terminal of gageand black lead to ground. Turn MASTER and APU FUELSHUTOFF switches ON and check for voltage. TurnMASTER and APU FUEL SHUTOFF switches OFF. Ifvoltage is present, repair/replace wire 420 of APU controlbox wiring harness (see paragraph 13-7). If voltage isnot present, replace ENGINE OIL PRESSURE gage (seeparagraph 13-7).2-195
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
