This code is for the communication circuit between the TCU and ECU.
FSM suggests the cause could be poor grounds for the TCU or ECU.
Or there could be poor contacts in the ECU or TCU connectors.
Or the signal wire is shorted to battery voltage, which the FSM indicates may require replacement of the ECM after fixing the short. Some voltage testing of the wire would be necessary to determine the exact cause. And for that you'll want to have the FSM handy to see pinouts for the ECU and TCU in order to do the testing.
Check here for 97 legacy FSM: http://www.main.expe...u_manual_scans/
Edited by Fairtax4me, 27 July 2014 - 10:53 AM.