NOTE
Be sure the battery is fully charged.
Main Harness [B] Subthrottle Valve Actuator [C]
Special Tool - Measuring Adapter: 57001-1700
Connect the peak voltage adapter [D] and a digital meter [E] to the measuring adapter leads.
Special Tool - Peak Voltage Adapter: 57001-1415 Type: KEK-54-9-B
Special Tool - Peak Voltage Adapter: 57001-1415 Type: KEK-54-9-B
Subthrottle Valve Actuator Input Voltage Connections to Adapter:
(I) Digital Meter (+) → R (actuator BK/O) lead Digital Meter (–) → Battery (–) terminal (II) Digital Meter (+) → BK (actuator G) lead Digital Meter (–) → Battery (–) terminal (III) Digital Meter (+) → W (actuator P/BL) lead Digital Meter (–) → Battery (–) terminal (IV) Digital Meter (+) → Y (actuator Y/BK) lead Digital Meter (–) → Battery (–) terminal
Input Voltage
Standard: About DC 8.5 10.5 V and
then 0 V or
About DC 8.5 10.5 V
If the reading is in specification, but the actuator does not operate, replace the throttle body assy.
If the reading is out of the specification, remove the ECU and check the wiring for continuity between main harness connector.
Special Tool - Hand Tester: 57001-1394
Disconnect the ECU and actuator connectors.
Wiring Continuity Inspection ECU Connector [A] ←→ Subthrottle Valve Actuator Connector [B] G lead (ECU terminal 15) [C] BK/O lead (ECU terminal 2) [D] P/BL lead (ECU terminal 14) [E] Y/BK lead (ECU terminal 1) [F]
If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).
Subthrottle Valve Actuator Circuit
1. ECU
2. Subthrottle Valve Actuator
Sprocket Wear Inspection
Visually inspect the engine and rear sprocket teeth for
wear and damage.
If the teeth are worn as illustrated, replace the sprocket,
and inspect the drive chain wear (see Drive Chain Wear
Inspection in the Periodic Maintenance chapter).
Worn Tooth (Engine Sprocket) [A]
Worn Tooth (Rear ...
Inner Tube Inspection
Visually inspect the inner tube [A].
If there is any damage, replace the inner tube. Since
damage to the inner tube damages the oil seal, replace
the oil seal whenever the inner tube is replaced.
NOTICE
If the inner tube is badly bent or creased, replace
it. Excessive bending, followed by ...
Service Code Reading
The service code(s) is displayed on the LCD by the number
of two digits.
NOTE
The service code of the KIBS and ABS adds “b” at the
left side of the code.
The service code of the ESD adds “E” at the left side of
the code.
When there are a number of problems, all the serv ...