Ignition Signal (Sidekick & Swift)

Ignition signal is sent from ignition coil to ECM terminal A12 on Sidekick TBI, terminal A4 on Sidekick MPI, terminal A12 on Swift DOHC, and terminal B2 on Swift SOHC. ECM uses this signal to detect if ignition spark is emitted and stops injector operation when signal is not received.