Subthrottle Valve Actuator (Service Code 62)
Input Voltage Inspection
Be sure the battery is fully charged.
Turn the ignition switch OFF.
Connect the peak voltage adaper [A] and a digital meter
[B] to the connector [C], using the needle adapter set [D].
Recommended Tool - Peak Voltage Adapter
Special Tool - Needle Adapter Set: 57001-1457
Subthrottle Valve Actuator Input Voltage
Connections to Harness Connector
Meter (+) → BK/BL lead 
Meter (–) → P/BL lead 
Meter (+) → G lead 
Meter (–) → W/BL lead 
Measure the actuator input voltage with the engine
stopped, and with the connector joined.
Turn the ignition switch ON.
Input Voltage at Sensor
If the reading is out of the range, check the wiring to ECU
(see wiring diagram in this section).
If the wiring is good, replace the ECU.
2. Subthrottle Valve Actuator
3. Subthrottle Sensor
4. Main Throttle Sensor
Brand: KOWA SEIKI
about 8.5 ∼ 10.5 V DC
FUEL SYSTEM (DFI) 3-99