TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 855 of 890
TM 9-2320-280-20-1 Table 2-2. Prompting Messages VTM Readout Interpretation UEH Signal to ECT switches. Vehicle ID numbers are found under TEST DATA on the flip card, on the vehicle test cards. Go Signal to technician to crank engine in compression balance or first peak tests. OFF Signal to technician to stop cranking in compression balance test or to release the accelerator in the CI ower test. CAL Signal to the technician to release the TEST button during an offset test. 66 Numbers are used for prompting messages in several tests. In confidence test, a readout of 66 signals the technician to dial in 99. In test no. 12, the first numerical readout signals the technician to shut off fuel. Table 2-3. Error Readouts VTM Readout Interpretation E000 Occurs if you request the VTM for information it does not have. For example, if you request the vehicle ID and it has not been entered. E001 Occurs in either the DCA or TK mode of operation. It indicates that a non-existent test number has been dialed into the TEST SELECT switches. E002 Indicates that the required transducer is not connected. E003 Indicates that a test number has been dialed which does not apply to the vehicle under test. It can only occur in the DCA mode. E004 Indicates that a vehicle identification number or number of cylinders information has not been entered. E005 Indicates that the transducer offset test was not performed. E007 Indicates a conflict between the vehicle identification number (VID) dialed in the the number of cylinders dialed in. It may occur in response to either VID entry or number-of- cylinders entry. E008 Indicates the VTM is not receiving the required voltage signal for the test selected. This error code is related only to starter and compression balance tests. E009 Indicates that the engine was not running at the start of the test. E010 Indicates that a wrong vehicle identification number was dialed into the VTM. E01l Indicates that throttle control was operated incorrectly during power test taking too much time to either accelerate or decelerate. E013 Indicates bad data were taken for the test in progress. Repeat the test one (1) time. E014 Indicates that a wrong number of cylinders was dialed into the VTM. E018 Indicates that an engine RPM or AC frequency test was terminated automatically to protect the VTM. Termination is only after several minutes of no-signal operation. Most likely the VTM was left on the vehicle and the engine stalled. 2-758