Diagnostic Aids
WARNING: This page is about a different car, the 1996 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
An intermittent condition may be caused by a poor connection, damaged wire insulation or a wire which is broken inside the insulation. Inspect TCM harness connectors for damaged, corroded or backed-out terminal pins. Repair as necessary and retest system.