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

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