What components are shown in this ignition schematic?

The legend lists five components: 1. ECM, 2. ECM coupler, 3. Noise suppressor, 4. Ignition coil, and 5. Igniter (Power unit).

Which ECM terminals connect to the ignition circuit?

ECM terminal A4 connects via an Orange (Or) wire to the igniter's COIL terminal, and terminal A8 connects via a Brown (Br) wire toward the ignition coil/noise suppressor circuit.

What wire colors are used in the igniter circuit?

B/W (Black/White) and Br/W (Brown/White) between the noise suppressor, ignition coil, and igniter; Br (Brown) from ECM pin A8; Or (Orange) from ECM pin A4; and B (Black) for the grounds.

What terminals does the igniter (power unit) have?

The igniter block is labeled IG1 and has COIL and GND terminals; GND goes to ground via a Black (B) wire.

Where are pins A4 and A8 located on the ECM connector?

The connector illustration at the lower right shows A4 and A8 positions on the bottom row of the ECM coupler, indicated with leader lines.

Home/ Registry/ Suzuki/ Samurai/ 1986-1995/ “Little Blue”/ Photo supermotors.net/registry/media/420676

Suzuki Samurai Igniter & Ignition Coil Wiring Schematic - ECM Pins A4/A8

Ignition system schematic: ECM coupler, noise suppressor, ignition coil and igniter with ECM connector pinout

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Schematic of the ignition system showing the ECM, noise suppressor, ignition coil and igniter with a numbered legend and ECM connector pinout.

AI caption August 2006 · Photo 45 of 86

This document is a wiring schematic for the electronic ignition (igniter/power unit) circuit, apparently from a Suzuki service manual and uploaded to a 1986 Suzuki Samurai gallery. The schematic shows five components identified by a numbered legend: (1) ECM, (2) ECM coupler, (3) noise suppressor, (4) ignition coil, and (5) igniter (power unit). Wiring connections are shown with wire color codes: Black/White (B/W) and Brown/White (Br/W) between the noise suppressor, ignition coil, and igniter; Brown (Br) from ECM terminal A8; Orange (Or) from ECM terminal A4 to the igniter's COIL terminal; and Black (B) ground wires from the noise suppressor and the igniter's GND terminal. The igniter block is labeled IG1 with COIL and GND terminals. A pinout illustration of the ECM coupler at the lower right identifies the physical locations of terminals A4 and A8 on the connector. A reader can learn how the ECM interfaces with the igniter and ignition coil, which wire colors carry each signal, and where to probe pins A4 and A8 on the ECM connector for diagnosis of ignition or ECM-related no-spark issues.

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Frequently asked questions

What components are shown in this ignition schematic?: The legend lists five components: 1. ECM, 2. ECM coupler, 3. Noise suppressor, 4. Ignition coil, and 5. Igniter (Power unit).
Which ECM terminals connect to the ignition circuit?: ECM terminal A4 connects via an Orange (Or) wire to the igniter's COIL terminal, and terminal A8 connects via a Brown (Br) wire toward the ignition coil/noise suppressor circuit.
What wire colors are used in the igniter circuit?: B/W (Black/White) and Br/W (Brown/White) between the noise suppressor, ignition coil, and igniter; Br (Brown) from ECM pin A8; Or (Orange) from ECM pin A4; and B (Black) for the grounds.
What terminals does the igniter (power unit) have?: The igniter block is labeled IG1 and has COIL and GND terminals; GND goes to ground via a Black (B) wire.
Where are pins A4 and A8 located on the ECM connector?: The connector illustration at the lower right shows A4 and A8 positions on the bottom row of the ECM coupler, indicated with leader lines.