TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0016 00 0016 00-7 SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE—REPROGRAMMABLE (STE/ICE-R) TROUBLESHOOTING INTRODUCTION (Contd) VTM READOUT INTERPRETATION UEH Signal to technician to enter Vehicle Identification (VID) numbers on the Test Select switches. VID numbers are found under test data on the flip-cards, on vehicle test cards, and in the appendix of TM 9-4910-571-12&P. GO Signal to technician to crank the engine in compression balance or first peak tests. During the battery condition test, indicates a weak battery in series pair of batteries being tested. CIP Signal to technician to apply full throttle in a C1 power test. OFF Signal to technician to stop cranking in compression balance test. CAL Signal to technician to release the TEST button during an offset test. 66 Numbers are used for prompting messages. For example, in the confidence test, 66 signals the technician to dial in 99. In C1 acceleration/deceleration power test No. 12, the first numerical readout signals the technician to shut off fuel. VTM READOUT INTERPRETATION .8.8.8.8 A readout of .8.8.8.8 appears for 1 to 2 seconds each time power is applied to the VTM. It means that there is power to the VTM and all elements of the readout display are operative. - - - - A readout of four dashes indicates the following: 1. After power is turned on, it signifies that the VTM is ready for testing. 2. During a compression unbalance test, it signifies testing is in progress. 3. During battery condition test, it signifies battery may be in discharged state. .9.9.9.9 A readout of .9.9.9.9 indicates that the VTM is reading a test value beyond the range of its measurement. Either the wrong test number is selected for parameters being measured or there is a fault in the vehicle. During a battery condition test, it signifies a bad connection condition or discharged or bad batteries. PASS/FAIL Pass or Fail readout is the outcome of a test that checks the condition of a component being measured. A Pass/Fail readout means the component either passes or fails the test. Table 1. Status Readouts. Table 2. Prompting Messages.