What wire color carries the MAF sensor signal to the ECM?

A Gr/B (gray/black) wire connects the MAF sensor's "Is" terminal to ECM terminal B8.

Where does the MAF sensor get its power?

The B+ terminal of the MAF sensor is fed from the main relay via a Bl/B (blue/black) wire.

How many wires does the MAF sensor have and what are the terminals?

Three terminals are shown: B+ (power from the main relay), Is (signal to ECM pin B8), and Ground (to chassis ground on a black wire).

Which ECM pin is used for the MAF sensor signal?

ECM terminal B8, shown both in the schematic and on the ECM coupler pinout illustration.

What components are identified in the diagram legend?

1. ECM, 2. ECM coupler, 3. MAF sensor, 4. MAF sensor coupler, 5. From main relay, 6. Resister.

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Suzuki Samurai MAF Sensor Wiring Diagram - ECM Pin B8, Wire Colors & Coupler

ECM and MAF sensor wiring diagram with Gr/B wire and ECM coupler pinout

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Wiring diagram showing the ECM-to-MAF-sensor circuit with resistor and ground plus an ECM coupler terminal layout.

AI caption August 2006 · Photo 53 of 86

This document is a wiring diagram for the Mass Air Flow (MAF) sensor circuit, uploaded to a 1986 Suzuki Samurai gallery. The schematic shows the ECM (item 1) with an internal A/D converter block and a resistor (item 6) to ground, connected through the ECM coupler (item 2) via ECM terminal B8. A Gr/B (gray/black) wire runs from ECM pin B8 to the MAF sensor coupler (item 4) and connects to the sensor's "Is" signal terminal. The MAF sensor (item 3) has three terminals: B+ (power), Is (signal), and Ground. Power to the B+ terminal comes on a Bl/B (blue/black) wire from the main relay (item 5), and the Ground terminal connects to chassis ground via a B (black) wire. A separate illustration on the right shows the ECM coupler face with its two multi-pin connector blocks and identifies the location of terminal B8. A reader can learn the MAF sensor's three-wire hookup, the wire colors for each circuit, the power source (main relay), and where to probe pin B8 at the ECM connector.

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Frequently asked questions

What wire color carries the MAF sensor signal to the ECM?: A Gr/B (gray/black) wire connects the MAF sensor's "Is" terminal to ECM terminal B8.
Where does the MAF sensor get its power?: The B+ terminal of the MAF sensor is fed from the main relay via a Bl/B (blue/black) wire.
How many wires does the MAF sensor have and what are the terminals?: Three terminals are shown: B+ (power from the main relay), Is (signal to ECM pin B8), and Ground (to chassis ground on a black wire).
Which ECM pin is used for the MAF sensor signal?: ECM terminal B8, shown both in the schematic and on the ECM coupler pinout illustration.
What components are identified in the diagram legend?: 1. ECM, 2. ECM coupler, 3. MAF sensor, 4. MAF sensor coupler, 5. From main relay, 6. Resister.