Help! My vette won't start and the ecm is putting out a code 46 which the vechile anit theft system (VATS) but I don't know where it's at or how to trouble shoot it? Is VATS a module or computer or relay and where can I find it.
Test Description: Numbers below refer to circled numbers on the diagnostic chart.
- If the engine cranks but doesn't start, it indicates that the portion of the CCM which generates the signal to the ECM is not operating or the 229 CKT is open or shorted to ground. If the CCM module is found to be OK, as determined from the Central Control Module (CCM) (Section 8D), the ECM may be at fault, but this is not a likely condition.
- If the engine will not crank, it indicates that there is a VATS problem or an incorrect key or starting procedure is being used.