below since the voltage on connector ab 35 pin 5 male is in range since the voltage on connector ab 35 pin 7 female is low since the voltage on connector ab 35 pin 5 male is in range and the voltage on connector ab 35 pin 5 female is high since the contents of foreground is nil and contents of definite bad is nil intermittent and user errors may sometimes cause problems the system can be set up to reduce the probability of such errors for example referring to fig1 connectors 1 and 2 are linked by wire 3 a voltage tester is applied sequentially to terminals 4 5 and 6 the sensed voltage is in range for terminals 4 and 5 but low for terminal 6 a simple interpretation could find wire 3 to have failed open circuit a more cautious approach would be to disconnect connectors 1 and 2 and measure the resistance between terminals 5 and 6 directly if the resistance is high the wire 3 can be indicted if the resistance is in range it is then necessary to look for an intermittent fault or check for a mis probe secondary faults can also give problems these can be overcome by treating a potential secondary fault as a new bad symptom to be reassessed as are all other symptoms only if all possible faults which would give rise to the secondary fault symptom can be eliminated e g declared irrelevant or good is the original fault indicted as a primary fault thus the diagnostic features provide various advantages firstly consistency results from the use or one reasoning mechanism throughout this simplifies tailoring of tests to specific customer requirements e g whether or not to.