Special Tool - Throttle Sensor Setting Adapter #1: 57001

-1400

• Measure the sensor output voltage with the engine stopped, and with the connector joined.

• Turn the ignition switch ON.

Speed Sensor Output Voltage at Sensor Connections to Adapter

Meter (+) → Y/W (sensor LG/R) lead [C] Meter (–) → BK (sensor BK/Y) lead [D]

Standard: About 0.05 ~ 0.07 V DC

NOTE

○If you rotate the engine sprocket, the output voltage will

be increased.

If the reading is out of the range, check the speed sensor operation (see Speed Sensor Inspection in the Electrical System chapter) and the wiring to ECU (see wiring dia- gram in this section).

If the reading, speed sensor operation and wiring are good, check the ECU for its ground, and power supply (see ECU Power Supply Inspection).

Speed Sensor Circuit

1. ECU

2. Speed Sensor

3. Meter Unit

4. Water-proof Joint B

5. Frame Ground

6. Joint Connector

 

Vehicle-down Sensor Removal

CAUTION

Never drop the down-sensor, especially on a hard surface. Such a shock to the sensor can damage it.

• Remove: Bolts [A]

Connector and Vehicle-down Sensor [B]

 

 

Vehicle-down Sensor Installation

WARNING

Incorrect installation of the vehicle-down sensor could cause sudden loss of engine power. The rider could lose balance during certain riding situ- ations like leaning over in a turn with the potential for an accident resulting in injury or death. Ensure that the down sensor is held in place by the sensor brackets.

• The UP mark [A] of the sensor should face upward.

 

 

Vehicle-down Sensor Inspection

NOTE

○Be sure the battery is fully charged.

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

Vehicle-down Sensor Power Source Voltage Connections to Sensor

Meter (+) → BL lead [E] Meter (–) → BR/BK lead [F]

• Turn the ignition switch ON, and measure the power

source voltage with the connector joined.

Vehicle-down Sensor Input Voltage Standard: 4.75 ~ 5.25 V DC

• Turn the ignition switch OFF.

If the reading of input voltage is less than the standard,

check the ECU for its ground, power supply and wiring shorted.

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

 

 

Vehicle-down Sensor (Service Code 31)

• Remove the sensor (see Vehicle-down Sensor Removal).

• 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 (+) → Y/G lead [E] Meter (–) → BR/BK lead [F]

• Hold the sensor vertically.

• Turn the ignition switch ON, and measure the output volt-

age with the connector joined.

○Tilt the sensor 60 ~70° or more [C] right or left, then hold

the sensor almost vertical with the arrow mark pointed up

[D], and measure the output voltage.

Output Voltage at Sensor

Standard: with sensor tilted 60 ~ 70° or more right or left: 0.65 ~ 1.35 V

with sensor arrow mark pointed up: 3.55 ~ 4.45 V

NOTE

○If you need to test again, turn the ignition switch OFF,

and then ON.

• Turn the ignition switch OFF.

• Remove the needle adapter set, and apply silicone

sealant to the seals of the connector for waterproofing.

Sealant - Kawasaki Bond (Silicone Sealant): 56019-120

If the output voltage is normal, the wiring is suspect. Check the wiring.

If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection).

If the output voltage is out of the specified, replace the vehicle-down sensor.

 

 

Vehicle-down Sensor Circuit

1. ECU

2. Water-proof Joint E

3. Vehicle-down Sensor

4. Water-proof Joint D

 

Subthrottle Sensor Removal/Adjustment

CAUTION

Do not remove or adjust the subthrottle sensor [A] since it has been adjusted and set with precision at the factory. Never drop the throttle body assy, especially on a hard surface. Such a shock to the sensor can dam- age it.

Subthrottle Sensor Input Voltage Inspection

NOTE

○Be sure the battery is fully charged.

• Remove the air cleaner housing (see Air Cleaner Housing Removal).

• Turn the ignition switch OFF.

• Disconnect the subthrottle sensor connector and connect

the harness adapter [A] between these connectors.

• Connect a digital meter to the harness adapter lead.