3-74 FUEL SYSTEM (DFI)
Speed Sensor (Service Code 24)
•
Connect a digital meter to the harness adapter leads.
Speed Sensor Output Voltage
Connections to Adapter
Meter (+) → BL/Y lead [A]
Meter (–) → BK lead [B]
•
Measure the output voltage with the engine stopped, and
with the connectors joined.
•
Turn the ignition switch ON.
Output Voltage at Sensor
Standard: DC 0.05 ∼ 0.09 V or DC 4.5 ∼ 4.9V
•
Rotate the rear wheel by hand, confirm the output voltage
will be raise or lower.
If the reading is out of the range, replace the speed sensor
(see Speed Sensor Removal/Installation in the Electrical
System chapter) and check the wiring to ECU (see wiring
diagram in this section).
If the reading, speed sensor and wiring are good, replace
the ECU (see ECU section).
•
Turn the ignition switch OFF.
Speed Sensor Circuit
1. ECU
2. Meter Unit
3. Speed Sensor
4. Joint Connector 1
5. Frame Ground
