TM 9-2320-289-20Table 2-4. Electrical Troubleshooting (Con’t)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION24. WILL NOT SHUT OFFStep 1.Remove horn relay. (See paragraph 4-22)If horn shuts off, replace relay.If horn does not shut off, trace circuit. (See wiring diagram F-20 or F-21)INSTRUMENT PANEL25. BRAKE WARNING LIGHT FLICKERING OR WILL NOT TURN OFFNOTEBrake warning light operation is considered normal if brake warning lightturns on when brake pedal is rapidly applied or released and turns off withnext brake application.Step 1.Check that parking brake is fully released. If light stays on, disconnect lead fromparking brake switch. (See paragraph 4-17, REMOVAL, step 1)If brake warning light goes out,replace parking brake switch. (Seeparagraph 4-17)If brake warning light does not go out, perform step 2.Step 2.Disconnect lead at combination valve. (See paragraph 7-9, REMOVAL, step 5)If brake warning light stays on, trace circuit. (See wiring diagram F-4 or F-5)If brake warning light goes out, bleed brakes. (See paragraph 7-6) If brakewarning light still does not go out,replace combination valve. (Seeparagraph 7-9)26. COOLANT LIGHT FLICKERING OR WILL NOT TURN OFFStep 1.Check coolant for proper level. (See TM 9-2320-289-10)Step 2.Turn key to “RUN” position. Disconnect black/yelIow lead from low coolant sensoron radiator and touch to any ground.If light goes out, replace low engine coolant sensor. (See paragraph 3-31)If light does not go out, perform step 3.2-69
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
