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Vehicle-down Sensor Input Voltage Inspection - KAWASAKI Z750 ABS Service Manual

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  • Contents

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Vehicle-down Sensor (Service Code 31)

Vehicle-down Sensor Input Voltage Inspection

○
Be sure the battery is fully charged.
•
Turn the ignition switch OFF.
•
Disconnect the vehicle-down sensor connector and con-
nect the harness adapter [A] between these connectors
as shown in the figure.
Main Harness [B]
Vehicle-down Sensor [C]
Special Tool - Measuring Adapter: 57001-1700
•
Connect a digital meter [D] to the harness adapter leads.
Vehicle-down Sensor Input Voltage
Connections to Adapter:
Digital Meter (+) → R (sensor BL) lead
Digital Meter (–) → BK (sensor BR/BK) lead
•
Measure the input voltage with the engine stopped and
with the connector joined.
•
Turn the ignition switch ON.
Input Voltage
Standard: DC 4.75
•
Turn the ignition switch OFF.
If the reading is within the standard, check the output volt-
age (see Vehicle-down Sensor Output Voltage Inspec-
tion).
If the reading is out of the standard, remove the ECU and
check the wiring for continuity between main harness side
connectors.
Wiring Inspection
ECU Connector [A] ←→
Vehicle-down Sensor Connector [B]
BL lead (ECU terminal 10) [C]
BR/BK lead (ECU terminal 28) [D]
If the wring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation).
NOTE
5.25 V
FUEL SYSTEM (DFI) 3-71

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