Suzuki Samurai EFI Ignition Circuit Schematic - ECM Pins & Wire Colors

This document is a scanned ignition circuit schematic for a fuel-injected Suzuki Samurai. It shows the complete ignition system wiring: battery (1) and ignition switch (2) feeding a main relay (3), igniter (4), ignition coil (5), and noise suppressor (6), all connected to the ECM. The distributor assembly (7) is shown with its rotor (8), and a signal rotor (9) with CMP sensor (10) provides crank/cam position signals; four spark plugs (11) are fed from the distributor cap. Wire color codes are labeled: B/W, Br/W, B/R, Bl, Bl/B, Or, and Br. ECM terminals are identified as A4, A8, A10, A12, A13, and B3, plus a lower connector row numbered 12-18. A legend identifies 18 components including the MAF sensor (with Vout, GND, and VB terminals), TP sensor, ECT sensor, engine start switch, test switch terminal, VSS, and IAT sensor, the last noted as applying to 1993 California-spec vehicles only. A reader can learn the wiring paths, wire colors, ECM pin assignments, and sensor inputs involved in the ignition system, useful for diagnosing no-spark conditions or tracing ignition-related circuits.