What fuse feeds this EFI circuit?

A 15A fuse in position 18 of the fuse box, on a B/W (black/white) wire.

Which connector is the camshaft position sensor on this diagram?

Connector C09, with pins 3, 2, and 1, wired with Bl/B, Bl/O, and O/Bl wires near the ECM.

What components connect to the ignition coil in this diagram?

The ignition coil (connector E17) connects to the distributor and to the igniter (power transistor, connector E18) on Br/W wires, with B/Bl and B/W feeds.

What wire colors go to the heated oxygen sensor?

The heated oxygen sensor (connector E19) uses B/W, Gr/Y, and B (ground) wires.

What is connector E28 in this diagram?

E28 is the power steering pressure switch, an OFF/ON switch with pin 1 to the circuit and a B wire to ground.

Home/ Registry/ Suzuki/ Samurai/ 1986-1995/ “Little Blue”/ Photo supermotors.net/registry/media/420653

Suzuki Samurai EFI Wiring Diagram - ECM, Ignition Coil, O2 & Cam Sensor Circuits

Wiring diagram: ignition coil, distributor, igniter, O2 sensor, camshaft position sensor and engine control module

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Wiring diagram showing the ignition system, heated oxygen sensor and camshaft position sensor circuits tied to the engine control module.

AI caption August 2006 · Photo 22 of 86

This document is one page (EFI1.gif) of a multi-page electronic fuel injection (EFI) wiring diagram for a Suzuki vehicle, uploaded to a 1986 Suzuki Samurai gallery. It shows the Engine Control Module (ECM, connectors E33 and E34) and its connections to major EFI/ignition components: a 15A fuse (position 18) in the fuse box, the ignition coil (E17), igniter/power transistor (E18), distributor, noise filter (E23), combination meter (with vehicle speed sensor and malfunction indicator/check engine lamp, connectors E38/G05, G09, G11, G06/E37), heated oxygen sensor (E19), camshaft position sensor (C09), data link connector, and power steering pressure switch (E28). Wire colors are labeled throughout, including B/W, B/Bl, Br/W, B/Y, V/Y, Y/Y, V/G, O/Bl, Bl/B, Bl/O, Gr/Y, R/Bl, Y/Bl, P, W, Br, O, and Y. Connector pin numbers are given for each component and for ECM pins (e.g., E34 pins 7, 14, 8, 4, 19; E33 pins 1, 23, 20, 2, 3, 16). Ground points 3, 4, and 10 are shown at the bottom. A reader can trace ECM power, ignition trigger, sensor, and ground circuits and identify wire colors and connector pinouts for diagnosis.

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Frequently asked questions

What fuse feeds this EFI circuit?: A 15A fuse in position 18 of the fuse box, on a B/W (black/white) wire.
Which connector is the camshaft position sensor on this diagram?: Connector C09, with pins 3, 2, and 1, wired with Bl/B, Bl/O, and O/Bl wires near the ECM.
What components connect to the ignition coil in this diagram?: The ignition coil (connector E17) connects to the distributor and to the igniter (power transistor, connector E18) on Br/W wires, with B/Bl and B/W feeds.
What wire colors go to the heated oxygen sensor?: The heated oxygen sensor (connector E19) uses B/W, Gr/Y, and B (ground) wires.
What is connector E28 in this diagram?: E28 is the power steering pressure switch, an OFF/ON switch with pin 1 to the circuit and a B wire to ground.