Kawasaki STX-15F service manual Output Voltage Inspection

3-30 FUEL SYSTEM (DFI)

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

Output Voltage Inspection

•Measure the output voltage at the ECU in the same way as input voltage inspection. Note the following.

Digital Voltmeter [A] Connector [B]

Special Tool - Needle Adapter Set: 57001-1457

Throttle Sensor Output Voltage Connections to ECU

Meter (+) → G/W lead (terminal 34) Meter (–) → BK/W lead (terminal 8)

•Start the engine.

•Check idle speed to ensure throttle opening is correct.

Idle Speed

Standard: 1 300 ±100 r/min (rpm)

•Measure the sensor output voltage with the idle speed.

Output Voltage at ECU

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

CAUTION

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

If the output voltage is within the standard range, check the ECU for a good ground, and power supply (see ECU Power Supply Inspection). If the ground and power sup- ply are good, replace the ECU.

If the output voltage is far out of the standard range (e.g. when the wiring is open, the reading is 0 V), check the output voltage at the sensor connector.