Yamaha FZ1-N Service Manual page 370

Fault
code Symptom
No.
No signals are received
Er-2 from the ECU within the
specified duration.
Data from the ECU cannot
Er-3 be received correctly.
Non-registered data has
Er-4 been received from the
meter.
Sensor operation table
Diag-
nostic
code
No.
Throttle position sensor sig-
nal
• Fully closed position
01
• Fully opened position
Atmospheric pressure
02
Intake air pressure
03
Intake air temperature
05
Coolant temperature
06
Vehicle speed pulse
07
Lean angle sensor
08 • Upright
• Overturned
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
• Improper connection in wire harness.
• Malfunction in meter.
• Malfunction in ECU.
Item
15–18
95–100
Displays the atmospheric
pressure.
Displays the cylinder-#1
intake air pressure.
Displays the intake air tem-
perature.
Displays the coolant tempera-
ture.
0–999
0.4–1.4
3.7–4.4
FUEL INJECTION SYSTEM
Probable cause of malfunction
Meter display
8-46
Diagnostic
code No.
Checking method
Check with throttle valve
fully closed.
Check with throttle valve
fully opened.
Compare the actually mea-
sured atmospheric pres-
sure with the meter display
value.
Set the engine stop switch
to " " then operate the
throttle while pushing the
start switch " ". (If the dis-
play value changes, the
performance is OK.)
Compare the actually mea-
sured air temperature with
the meter display value.
Compare the actually mea-
sured coolant temperature
with the meter diaplay
value.
Check that the number
increases when the rear
wheel is rotated. The num-
ber is cumulative and does
not reset each time the
wheel is stopped.
Remove the lean angle
sensor and incline it more
than 65 degrees.
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