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Backups; Main Throttle Sensor - Kawasaki Ninja ZX–6R Service Manual

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3-64 FUEL SYSTEM (DFI)
Self-Diagnosis

Backups

The ECU takes the following measures to prevent engine damage when the DFI or the ignition
system parts have troubles.
Service
Parts
Codes
Main
Throttle
11
Sensor
Inlet Air
12
Pressure
Sensor
Inlet Air
13
Tempera-
ture Sensor
Water Tem-
14
perature
Sensor
Atmo-
spheric
15
Pressure
Sensor
Crankshaft
21
Sensor
Camshaft
23
Position
Sensor
Speed
24
Sensor
Speed
25
Sensor
Vehicle
31
-down
Sensor
Output Signal Usable
Range or Criteria

Main Throttle Sensor

Output Voltage
0.2 ∼ 4.8 V
Inlet Air Pressure
(absolute)
Pv = 100 mmHg ∼ 900
mmHg
Inlet Air Temperature
Ta = – 47°C ∼ + 178°C
Water Temperature
Tw = – 30C° ∼ + 120°C
Absolute Atmospheric
Pressure
Pa = 100 mmHg ∼ 900
mmHg
Crankshaft sensor must
send 23 signals (output
signal) to the ECU at the
one cranking.
Cam sensor must send
one signal (output signal)
to the ECU at the two
cranking
Speed sensor must send
4 signals (output signal)
to the ECU at the one
rotation of the engine
sprocket
The gear position is
decided by the signal of
the speed sensor.
Vehicle-down Sensor
Output Voltage (signal)
Vd = 0.4 V ∼ 4.4 V
Backups by ECU
If the main throttle sensor system fails (the signal
is out of the usable range, wiring short or open),
the ECU locks ignition timing into the ignition
timing at closed throttle position and sets the DFI
in the D-J method.
Also, the main throttle sensor system and inlet air
pressure fails, the ECU locks ignition timing into
the ignition timing at closed throttle position and
sets the DFI in the α-N method.
If the inlet air pressure sensor system fails (the
signal Pv is out of the usable range, wiring short
or open), the ECU sets the DFI in the α - N
method (1).
If the inlet air temperature sensor fails (the signal
is out of the usable range, wiring short or open),
the ECU sets Ta at 40°C.
If the water temperature sensor system fails (the
signal is out of the usable range, wiring short or
op en), the ECU sets Tw at 80°C.
If the atmospheric pressure sensor system fails
(the signal is out of the usable range, wiring short
or open), the ECU sets Pa at 760 mmHg (the
standard atmospheric pressure).
If crankshaft sensor generates less than 23 or
more signals, the engine stops by itself.
If the camshaft position sensor system fails
(the signal is missing, wiring short or open), the
ECU continues to ignite cylinders in the same
sequence following the last good signal.
If the speed sensor system fails (no signal, wiring
short or open), the speedometer shows 0.
If the speed sensor system fails (no signal, wiring
short or open), the ECU set the top (6) gear
position.
If the vehicle-down sensor system has failures
(the output voltage Vd is more than usable range,
wiring open), the ECU shuts off the fuel pump,
the fuel injectors and the ignition system.

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   Also See for Kawasaki Ninja ZX–6R

This manual is also suitable for:

Ninja zx-6rrZx–6rZx-6rrZx-6rr 2003Zx-6r 2003Ninja zx-6r 2003-2004 ... Show all

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