Kawasaki Ninja Service Manual: Exhaust Butterfly Valve Actuator Sensor Output Voltage Inspection

NOTE

Before this inspection, confirm the pulley is original position (see Exhaust Butterfly Valve Actuator Installation).

• Disconnect: 3 Pins Connector [A] (see Exhaust Butterfly Valve Actuator Sensor Output Voltage Inspection) 2 Pins Connector [B]

• Connect the harness adapter [A] between the 3 pins connectors.

Special Tool - Throttle Sensor Setting Adapter #1: 57001 -1400

• Connect a digital meter to the harness adapter leads.

Exhaust Butterfly Valve Actuator Sensor Output Voltage Connections to Adapter: Digital Meter (+) → BL (actuator Y) lead Digital Meter (−) → BK/BL (actuator BK) lead

• Measure the output voltage at the 3 pins connector of the exhaust butterfly valve actuator when the pulley is original position.
• Turn the ignition switch to ON.

Output Voltage Standard: DC 3.46 3.76 V at pulley
original position

• Turn the ignition switch to OFF.

If the reading is out of the standard, check the exhaust butterfly valve actuator sensor resistance (see Exhaust Butterfly Valve Actuator Sensor Resistance Inspection).

If the reading is within the standard, remove the ECU and check the wiring for continuity between main harness connectors.

Disconnect the ECU and sensor connectors

Wiring Inspection ECU Connector [A] ←→ Exhaust Butterfly Valve Actuator Sensor Connector [B] GY lead (ECU terminal 24) [C] BR/BK lead (ECU terminal 13) [D]

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).