3-70 FUEL SYSTEM (DFI)

Gear Position Switch (Service Code 25)

Gear Position Switch Removal/Installation

•Refer to the Gear Position Switch Removal/Installation in the Electrical System chapter.

Gear Position Switch Resistance Inspection

•Refer to the Gear Position Switch Inspection in the Electrical System chapter.

If the reading is as the specified, check the output voltage (see Gear Position Switch Output Voltage Inspection).

Gear Position Switch Output Voltage Inspection

NOTE

○Be sure the battery is fully charged.

•Turn the ignition switch OFF.

•Remove the ECU (see ECU Removal). ○Do not disconnect the ECU connectors.

•Connect a digital meter [A] to the connector [B] with the needle adapter set.

Special Tool - Needle Adapter Set: 57001-1457

Gear Position Switch Output Voltage Connections to ECU Connector:

Digital Meter (+) → W/G lead (terminal 23) Digital Meter (–) → Battery (–) terminal

•Measure the switch output voltage with the engine stopped and with the connector joined.

•Turn the ignition switch ON.

○When changing the gear position from lower gear to higher gear, raise the rear wheel off the ground with the stand and rotate the rear wheel by hand.

Output Voltage at 1 6 Gear Positions

Standard:
1st	About 3.0 V
2nd	About 2.5 V
3rd	About 2.0 V
4th	About 1.5 V
5th	About 1.1 V
6th	About 0.7 V

•Turn the ignition switch OFF.

If the reading is out of the standard, check the wiring for continuity, using the wiring diagram in this section.

Special Tool - Hand Tester: 57001-1394

If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection).

If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

FUEL SYSTEM (DFI) 3-71

Gear Position Switch (Service Code 25)

Gear Position Switch Circuit

1.Meter Unit

2.Gear Position Switch

3.ECU

4.Frame Ground