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Home >> Lexus >> 1998 >> SC 400 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - A-650E >> Diagnostic Tests >> Notes

Diagnostic Tests: Notes

When trouble shooting transmission, first check for stored trouble codes and repair as necessary. If no trouble codes exist, perform MANUAL SHIFT TEST  to determine if problem area is in electrical circuits or a mechanical transmission problem.

NOTE: For wire color and circuit identification, see WIRING DIAGRAMS .