Instructions for JSD-1/2/3/4M

Background

Suzuki manufactures motorcycles with a different ignition map for each gear. In the lower gears, the ignition timing is retarded. The JSD sends a fixed signal to the Electronic Control Unit (ECU) which eliminates the retardation. This enables a more responsive throttle and faster acceleration in the lower gears.

Product Description Functionality Recommended Suzuki Model JSD-1M   Automatic, 2.7k ohm resistor Sends a fixed signal for 4th gear to the ECU for all gears. Fuel-injected Boulevard M109R   JSD-2M   Automatic, 2.7k ohm resistor Sends a fixed signal for 4th gear to the ECU for all gears. Fuel-injected Boulevard M109R JSD-3M   Automatic, 2.7k ohm resistor Sends a fixed signal for 4th gear to the ECU for all gears except neutral (preserves neutral). Fuel-injected Boulevard M109R JSD-4M   Automatic, 2.7k ohm resistor Sends a fixed signal for 4th gear to the ECU for all gears except neutral (preserves neutral). Fuel-injected Boulevard M109R

Installation Steps

1) Remove the seat by inserting the ignition key in the slot on the left side of the bike.

2) Using a 4mm Allen wrench, remove the bolt from the right side cover.

3) Remove the push pin located on the top, right of the side cover.

4) Remove the side cover by pulling it out.

5) Locate the Gear Position Sensor (GPS) connector (white, three-pin, triangular connectors with black, blue and pink wires). It is located on the right side near the frame rail, just behind the rear cylinder exhaust.

6) Pull apart the GPS connectors.

7) Connect the JSD male to the GPS female connector. Connect the JSD female to the GPS male connector.

NOTE:

• Alway pull the JSD by it's connectors, never it's wires!

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