NS-11 - Checking Injector Control Circuits
- Connect DRB-II to engine harness connector. Put system in Diagnostic Test Mode. Turn ignition off. Disconnect 60-pin connector from SMEC. Connect one end of jumper wire to 60-pin connector cavity No. 33. Turn ignition switch to "RUN" position. Press and hold ATM key on DRB-II. Touch other end of jumper wire to positive battery terminal.
- If injectors No. 1 and No. 2 click, go to step 3). If injectors No. 1 and No. 2 do not click, turn ignition off. Disconnect 14-pin connector from SMEC. Connect ohmmeter between 60-pin connector cavity No. 33 and 14-pin connector cavity No. 8. If there is continuity, replace SMEC for a defective power board. Before replacing SMEC, ensure terminal in 14-pin connector cavity No. 8 is not damaged causing a poor connection. If there is no continuity, repair Voilet/Yellow wire to cavity No. 10 for an open circuit to injector harness connector.
- With DRB-II connected and system in Diagnostic Test Mode and 60-pin connector disconnected from SMEC. Connect one end of jumper wire to 60-pin connector cavity No. 32. Press and hold ATM key on DRB-II. Touch other end of jumper wire to positive battery terminal. If injectors No. 3 and No. 4 click, replace SMEC for a defective logic board.
- If injectors No. 3 and No. 4 do not click, turn ignition off. Disconnect 14-pin connector from SMEC. Connect ohmmeter to 60-pin connector cavity No. 32 and 14-pin connector cavity No. 5. If there is continuity, replace SMEC for a defective power board. Before replacing SMEC, ensure terminal in 14-pin connector cavity No. 5 is not damaged causing a poor connection. If there is no continuity, repair Gray/White wire between 14-pin and 60-pin connectors for an open circuit.