Kawasaki Ninja Service Manual: Main Throttle Sensor Output Voltage Inspection

Kawasaki Ninja Service Manual / Self-Diagnosis System / Main Throttle Sensor (Service Code 11) / Main Throttle Sensor Output Voltage Inspection

Disconnect the main throttle sensor connector and connect the setting adapter [A] between these connectors.

Main Throttle Sensor Output Voltage Inspection


Special Tool - Throttle Sensor Setting Adapter: 57001 -1538

Main Throttle Sensor Output Voltage Connections to Adapter: Digital Meter (+) → R (sensor V/W) lead

Digital Meter (–) → BK (sensor BR/BK) lead

Install the following parts temporarily.

Throttle Body Assy (see Throttle Body Assy Installation in the Fuel System (DFI) chapter) Air Cleaner Housing (see Air Cleaner Housing Installation in the Fuel System (DFI) chapter) Fuel Tank (see Fuel Tank Installation in the Fuel System (DFI) chapter)

Idle Speed Standard: 1 100 ±50 r/min (rpm)

Main Throttle Sensor Output Voltage Inspection


Output Voltage Standard: DC 0.64 0.68 V at idle
throttle opening DC 3.89 4.09 V at full throttle
opening (for reference)

NOTE

Example: In the case of a input voltage of 4.75 V.

0.64 × 4.75 ÷ 5.00 = 0.61 V 0.68 × 4.75 ÷ 5.00 = 0.65 V Thus, the valid range is 0.61
0.65 V

If the reading is out of the standard, replace the throttle body assy.

If the reading is within 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.

Main Throttle Sensor Output Voltage Inspection


Wiring Continuity Inspection ECU Connector [A] ←→ Main Throttle Sensor Connector [B] V/W lead (ECU terminal 25) [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).

Main Throttle Sensor Circuit

Main Throttle Sensor Circuit


1. ECU

2. Subthrottle Sensor

3. Main Throttle Sensor

Main Throttle Sensor Resistance Inspection
Turn the ignition switch to OFF. Measure the main throttle sensor resistance in the same way as input voltage inspection, note the following. Disconnect the throttle sensor setting adapter [ ...

Intake Air Pressure Sensor #1 (Service Code 12)
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Other materials:

Air Cleaner Housing Removal
Remove the fuel tank (see Fuel Tank Removal). Disconnect the secondary fuel hose [A] from the delivery pipe of the nozzle assy [B] (see Fuel Hose Replacement in the Periodic Maintenance chapter). Disconnect the secondary fuel injector connectors [C]. Free the lead from the grooves [D]. ...

Leather, Vinyl, and Rubber
If your motorcycle has leather accessories, special care must be taken. Use a leather cleaner/treatment to clean and care for leather accessories. Washing leather parts with detergent and water will damage them, shortening their life. Vinyl parts should be washed with the rest of themo ...

Intake Air Temperature Sensor Removal
NOTICE Never drop the intake air temperature sensor especially on a hard surface. Such a shock to the sensor can damage it. Remove the fuel tank (see Fuel Tank Removal in the Fuel System (DFI) chapter). Disconnect the connector [A] from the intake air temperature sensor. Remove the da ...