Kawasaki Ninja Service Manual: Vehicle-down Sensor Input Voltage Inspection

Kawasaki Ninja Service Manual / Self-Diagnosis System / Vehicle-down Sensor (Service Code 31) / Vehicle-down Sensor Input Voltage Inspection

NOTE

Be sure the battery is fully charged.

Turn the ignition switch to OFF.
Disconnect the vehicle-down sensor connector and connect the measuring adapter [A] between these connectors as shown in the figure.

Main Harness [B] Vehicle-down Sensor [C]

Special Tool - Measuring Adapter: 57001-1700

Connect a digital meter [D] to the measuring adapter leads.

Vehicle-down Sensor Input Voltage Inspection

Vehicle-down Sensor Input Voltage Connections to Adapter: Digital Meter (+) → R (sensor BL) lead Digital Meter (–) → BK (sensor BR/BK) lead

Vehicle-down Sensor Input Voltage Inspection

Measure the input voltage with the engine stopped and with the connector joined.
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 Vehicle-down Sensor Output Voltage Inspection).

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

Special Tool - Hand Tester: 57001-1394

Disconnect the ECU and sensor connectors.

Wiring Continuity Inspection ECU Connector [A] ←→ Vehicle-down Sensor Connector [B] BL lead (ECU terminal 9) [C] BR/BK lead (ECU terminal 13) [D]

Vehicle-down Sensor Input Voltage Inspection

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).

Vehicle-down Sensor Installation

Be sure to install the rubber dampers [A] and collars [B] on the bracket. The UP mark [A] of the sensor should face upward. WARNINGIncorrect installation of the vehicle-down ...

Vehicle-down Sensor Output Voltage Inspection

Remove the vehicle-down sensor. Connect the measuring adapter [A] to the vehicle-down sensor connectors as shown in the figure. Special Tool - Measuring Adapter: 57001-1700 Main Harness [B] ...

Other materials:

Cylinder Head Installation
NOTE The camshaft cap is machined with the cylinder head, so if a new cylinder head is installed, use the cap that is supplied with the new head. Install the dowel pins. Replace the cylinder head gasket with a new one. Replace the cylinder head bolt washers with new ones. Apply molybden ...

Troubleshooting Guide
NOTE Refer to the Fuel System chapter for most of DFI trouble shooting guide. This is not an exhaustive list, giving every possible cause for each problem listed. It is meant simply as a rough guide to assist the troubleshooting for some of the more common difficulties. Engine Doe ...

Idle Speed Inspection
Start the engine and warm it up thoroughly. With the engine idling, turn the handlebar to both sides [A]. If handlebar movement changes the idle speed, the throttle cables may be improperly adjusted or incorrectly routed, or damaged. Be sure to correct any of these conditions before rid ...