C Remove APU access panel from APU. Set MASTER switch OFF. Checkvoltage at fuel solenoid 421 lead terminal. Place red multimeter probe on 421terminal and ground black probe. Set MASTER switch ON. Set APU FUELSHUT OFF switch ON. If voltage is indicated fuel solenoid is defective.Notify Support maintenance. If no voltage is indicated, go to step D.D Set MASTER switch OFF. Disconnect main harness connector (largeconnector) at APU wall mount. Place red probe of multiimeter on wall-mounted connector terminal B, and ground black probe. Set MASTER switchON. Set FUEL SHUT OFF switch ON. If voltage is indicated repair orreplace harness 421 from wall-mounted connector to solenoid (p 6- 132). If novoltage is indicated, go to step E. Reconnect main harness connector.2-255TM 9-2350-267-20
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
