# Subthrottle Sensor Resistance Inspection - Kawasaki Z750 ABS Service Manual

3-76 FUEL SYSTEM (DFI)
Subthrottle Sensor (Service Code 32)
Measure the output voltage with the engine stopped with
the connector joined.
Turn the ignition switch ON.
Measure the output voltage when the subthrottle valve is
completely closed by turning the lever [A] fully clockwise
[B].
Output Voltage
Standard:
Turn the lever counterclockwise, confirm the output volt-
age will be raise.
The standard voltage refers to the value when the volt-
age reading at the Input Voltage Inspection shows 5 V
exactly.
When the input voltage reading shows other than 5 V,
derive a voltage range as follows.
Example:
In the case of a input voltage of 4.75 V.
0.48 × 4.75 ÷ 5.00 = 0.46 V
0.52 × 4.75 ÷ 5.00 = 0.49 V
Thus, the valid range is 0.46
If the reading is out of the standard, check the subthrot-
tle sensor resistance (see Subthrottle Sensor Resistance
Inspection).
If the reading is within the standard, remove the ECU and
check the wiring for continuity between main harness side
connectors.
Disconnect the ECU and sensor connectors.
Wiring Inspection
ECU Connector [A] ←→
Subthrottle Sensor Connector [B]
BR lead (ECU terminal 24) [C]
BR/BK lead (ECU terminal 28) [D]
If the wiring 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).

## Subthrottle Sensor Resistance Inspection

Turn the ignition switch OFF.
Disconnect the subthrottle sensor connector.
Connect a digital meter [A] to the subthrottle sensor con-
nector [B].
Measure the subthrottle sensor resistance.
Subthrottle Sensor Resistance
Standard:
If the reading is out of the standard, replace the throttle
body assy.
If the reading is within the standard, but the problem still
exists, replace the ECU (see ECU Removal/Installation).
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DC 0.48 ∼ 0.52 V at idle throttle opening
DC 3.8 ∼ 4.0 V at full throttle opening (for
reference)
NOTE
0.49 V
4 ∼ 6 kΩ
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#### This manual is also suitable for:

2007 z750 abs2007 z7502007 zr750l7f2007 zr750m7f

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