Kawasaki Ninja Service Manual: Subthrottle Sensor Input Voltage Inspection

Kawasaki Ninja Service Manual / Self-Diagnosis System / Subthrottle Sensor (Service Code 32) / Subthrottle Sensor Input Voltage Inspection

NOTE

Be sure the battery is fully charged.

Turn the ignition switch to OFF.
Remove the air cleaner housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter)
Disconnect the subthrottle sensor connector and connect the harness adapter [A] between these connectors.

Special Tool - Throttle Sensor Setting Adapter: 57001 -1538

Subthrottle Sensor Input Voltage Inspection

Connect a digital meter to the harness adapter leads.

Subthrottle Sensor Input Voltage Connections to Adapter: Digital Meter (+) → W (sensor BL) lead Digital Meter (–) → BK (sensor BR/BK) lead

Measure the input voltage with the engine stopped and with the connector joined.
Connect the following parts to harness connectors temporarily.

ECU Intake Air Temperature Sensor
Turn the ignition switch to ON.

Input Voltage Standard: DC 4.75 5.25 V

Turn the ignition switch to OFF.

If the reading is within the standard, check the output voltage (see Subthrottle Sensor Output Voltage Inspection).

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

Special Tool - Hand Tester: 57001-1394

Disconnect the ECU and sensor connectors.

Subthrottle Sensor Input Voltage Inspection

Wiring Continuity Inspection ECU Connector [A] ←→ Subthrottle Sensor Connector [B] BL lead (ECU terminal 9) [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).

Subthrottle Sensor Removal/Adjustment

NOTICE Do not remove or adjust the subthrottle sensor [A] since it has been adjusted and set with precision at the factory. Never drop the throttle body assy especially on a hard surface. Such ...

Subthrottle Sensor Output Voltage Inspection

Measure the output voltage at the subthrottle sensor in the same way as input voltage inspection, note the following. Disconnect the subthrottle sensor connector and connect the setting adapt ...

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