Kawasaki STX-15F service manual Vehicle-down Sensor Inspection

FUEL SYSTEM (DFI) 3-45

Vehicle-down Sensor (Service Code/Character-31/dOS)

Vehicle-down Sensor Inspection

NOTE

○Be sure the battery is fully charged.

•Remove:

Fuel Tank (see Fuel Tank Removal)

•Connect a digital volt meter [A] to the connector [B] of the vehicle-down sensor lead with the needle adapter set [C].

Special Tool - Needle Adapter Set: 57001-1457

Vehicle-down Sensor Power Source Voltage

Connections to Sensor

Meter (+) → R/G lead [D]

Meter (–) → BK/W lead [E]

•Turn the ignition switch ON and push the lanyard key un- der the stop button.

•Pushing the start button, run the engine 5 ∼ 6 seconds at idling to measure the sensor power sours voltage.

○Wait 15 seconds before using the starter again.

Power Source Voltage at Sensor

Standard: 4.75 ∼ 5.25 V

•Turn the ignition switch OFF.

If there is no standard voltage, check the following: Battery (see Electrical System chapter)

Main Fuse 20 A

Wiring for Vehicle-down Sensor Power Source (see next diagram)

If the power source is normal, check the output voltage.

•Turn the ignition switch OFF.

•Remove the vehicle-down sensor. Do not disconnect the connector.

•Connect a digital volt meter [A] to the connector, with nee- dle adapter set [B].

Special Tool - Needle Adapter Set: 57001-1457

Vehicle-down Sensor Output Voltage

Connections to Sensor

Meter (+) → BL/W lead [D]

Meter (–) → BK/W lead [E]

•Hold the sensor vertically.

•Turn the ignition switch ON and push the lanyard key un- der the stop button.

•Pushing the start button, run the engine 5 ∼ 6 seconds at idling to measure the sensor output voltage.

○Tilt the sensor 110 ∼ 130° or more [C] right or left, then hold the sensor and measure the output voltage.

○Wait 15 seconds before using the starter again.

Output Voltage at Sensor

Standard: with sensor tilted 110 ∼ 130° or more right or left: 0.65 ∼ 1.35 V

with sensor arrow mark pointed up: 3.55

∼4.45 V