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NS-8 - Code 43 - Ignition Control Circuit Check

  1. Connect DRB-II to engine harness connector. Put system in Diagnostic Test Mode. Turn ignition off. Disconnect coil wire from distributor cap and hold wire 1/4" away from good ground. Disconnect 60-pin connector from SMEC. Connect one end of a jumper wire to cavity No. 34 of 60-pin connector. Turn ignition on.
    Fig 1: Connecting Jumper Wire To 60-Pin Connector
    G55906
  2. Press and hold ATM key on DRB-II. Touch other end of jumper wire to ground. Make and break this connection several times. If there is spark as you make and break this connection, replace SMEC for a defective logic board. Before replacing SMEC, ensure terminal in cavity No. 34 is not damaged causing a poor connection.
  3. If there is no spark as you make and break the connection, turn ignition off. Remove jumper wire from 60-pin connector. Disconnect 14-pin connector from SMEC. Connect ohmmeter leads to 60 pin connector cavity No. 34 and 14-pin connector cavity No. 13.
    Fig 2: Connecting Ohmmeter Between 60-Pin Connector, Pin No. 34 & 14-Pin Connector Pin No. 13
    G55907
  4. If there is continuity, replace SMEC for a defective power board. Before replacing SMEC, ensure terminal in cavity No. 13 is not damaged causing a poor connection. If there is no continuity, repair Yellow wire to cavity No. 13 for an open circuit.
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