MIL request signal circuit
This code is set when the MIL On Request from the TCM (Transmission Control Module) has/had a problem getting the information to the ECU (Engine Control Module). In the 98 Elantra, there are two separate computer modules; one for the engine, the other for the transmission. (both located under the dash Driver's side. The diagnostic procedure specifies the wiring between the ECM & TCM be checked for any damage/defects. If none found, then replace the TCM with a new one to see if the problem (code) occurs again. If communication between TCM & ECM is corrected, you should have a ****** code related to the MIL On Request from the TCM (****** codes begin with P07 w/the next two digits (??) identifying the specific transmission component/malfunction).
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