3-28 FUEL SYSTEM (DFI)

Throttle Sensor (Service Code/Character-11/tPS)

Adjust the throttle sensor positioning as follows. Install the air filter temporarily.

After warming up the engine, check the idling speed.

Idle Speed

Standard: 1 300 ±100 r/min (rpm)

Stop the engine and turn the ignition switch OFF.

Disconnect the throttle sensor connector and connect the throttle sensor setting adapter [A] between the harness connector and throttle sensor connector.

Connect a digital meter to the sensor setting adapter leads.

Special Tool - Throttle Sensor Setting Adapter: 57001 -1521

Throttle Sensor Output Voltage

Connections to Sensor

Meter (+)→ G/W lead

Meter (–)→ BK/W lead

Start the engine with idle speed.

Turn [A] the throttle sensor and bring the sensor output voltage within the standard range.

Output Voltage at Sensor

Standard: 1.08 1.18 V DC (at idle throttle opening)

Tighten the throttle sensor mounting screws.

Torque - Throttle Sensor Mounting Screws: 2.0 N·m (0.20 kgm·f, 18 in·lb)

Recheck the sensor output voltage is within the standard range.

Stop the engine and turn the ignition switch OFF.

Remove the setting adapter and reconnect the throttle sensor connector.

Input Voltage Inspection

NOTE

Be sure the battery is fully charged.

Turn the ignition switch OFF.

Remove the ECU (see ECU Removal). Do not disconnect the ECU connector.

Connect a digital voltmeter [A] to the connector [B], using the needle adapter set.

Special Tool - Needle Adapter Set: 57001-1457

Throttle Sensor Input Voltage Connections to ECU

Meter (+)→ R lead (terminal 12) Meter (–)→ BK/W lead (terminal 8)

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Kawasaki STX-15F service manual Input Voltage Inspection, Be sure the battery is fully charged