Yamaha 2002 TDM900 Service Manual page 371

Fault
Symptom
Code No.
Open circuit is detected in the
primary wire of the ignition coil
(#1).
33
Open circuit is detected in the
primary wire of the ignition coil
(#2).
34
Lean angle cut-off switch-open or
41 short circuit detected.
No normal signals are received
from the speed sensor; or, an open
or short circuit is detected in the
neutral switch.
42 42
The ECU is unable to monitor the
43 battery voltage (an open circuit in
the monitor line to the ECU).
An error is detected while reading
44 or writing on EEPROM.
Faulty ECU memory. When this
malfunction is detected, the code
50
number might not appear on the
meter.
No signals are received from the
Er-1 ECU.
No signals are received from the
Er-2 ECU within the specified duration.
Data from the ECU cannot be
Er-3 received correctly.
Non-registered data has been
Er-4 received from the meter.
FUEL INJECTION SYSTEM
Probable cause of malfunction
S Open or short circuit in wiring harness.
S Malfunction in ignition coil.
S Malfunction in ECU.
S Malfunction in a component of ignition cutoff
circuit system.
S Open or short circuit in wiring harness.
S Malfunction in ignition coil.
S Malfunction in ECU.
S Malfunction in a component of ignition cutoff
circuit system.
S Open or short circuit in wiring harness.
S Defective lean angle cut-off switch.
S Malfunction in ECU.
S Open or short circuit in wiring harness.
S Defective speed sensor.
S Malfunction in vehicle speed sensor detected
unit.
S Defective neutral switch.
S Malfunction in the engine side of the neutral
switch.
S Malfunction in ECU.
S Open circuit in wiring harness.
S Malfunction in ECU.
S Malfunction in ECU. (The CO adjustment
value is not properly written on or read from
the internal memory).
S Malfunction in ECU. (The program and data
are not properly written on or read from the
internal memory.)
S Open or short circuit in communication line.
S Malfunction in meter unit.
S Malfunction in ECU.
S Open or short circuit in communication line.
S Malfunction in meter unit.
S Malfunction in ECU.
S Open or short circuit in communication line.
S Malfunction in meter unit.
S Malfunction in ECU.
S Open or short circuit in communication line.
S Malfunction in meter unit.
S Malfunction in ECU.
7-8
FI
Diagnostic
monitoring code No.
30
31
08
07
21
—
60
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