1-4 Shift Relay (Man. Trans. Corvette)
- Turn ignition off. Disconnect 1-4 shift relay connector. Check for continuity between terminals "D" and "F" of relay. If continuity does not exist, replace relay. If continuity does exist, check for continuity between relay terminals "C" and "A". Continuity should also exist when relay is not energized. If not, replace relay.
- Energize relay by applying battery voltage to terminal "D" of relay and ground terminal "F". Check continuity between terminals "A" and "E". Continuity should exist while relay is energized. Replace relay if it does not test as described.
Courtesy of GENERAL MOTORS CORP.