Kawasaki STX-15F service manual Resistance Inspection

FUEL SYSTEM (DFI) 3-31

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

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

•Connect a digital meter to the 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

•Measure the sensor output voltage with the idle speed.

Output Voltage at Sensor

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

CAUTION

Never drop the throttle sensor, especially on a hard surface. A shock to the sensor can damage it.

•After throttle sensor voltage inspection, remove the set- ting adapter.

If the reading is out of the standard range, inspect the throttle sensor resistance.

If the output voltage is normal, check the wiring for conti- nuity (see next diagram).

Resistance Inspection

•Turn the ignition switch OFF.

•Remove:

Air Filter (see Air Filter Removal)

•Disconnect the throttle sensor connector and connect the setting adapter [A] to the throttle sensor [B].

Special Tool - Throttle Sensor Setting Adapter: 57001 -1521

○Do not connect the harness connector.

•Connect a digital meter [C] to the harness adapter leads.

•Measure the throttle sensor resistance.

Throttle Sensor Resistance

Connections to

Harness Adapter: R lead [D] ←→ BK/BL lead [E]

Standard: 4 ∼ 6 kΩ

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

If the reading is within the range, but the problem still exists, replace the ECU.