Yamaha 2002 TDM900 Service Manual page 455

S Set the main switch to "ON".
S Measure the atmospheric pressure sensor
output voltage.
Atmospheric pressure sensor
output voltage
3.75 X 4.25 DCV
S Is the atmospheric pressure sensor OK?
YES
14.AI system solenoid
S Remove the AI system solenoid coupler
from the wire harness.
S Connect the pocket tester (Ω
system solenoid terminal as shown.
Tester positive probe ! orange
Tester negative probe ! green
O
S Measure the AI system solenoid resistance.
AI system solenoid resistance
19 X 25 Ω at 20_C
S Is the AI system solenoid OK?
YES
FUEL INJECTION SYSTEM
NO
Replace the atmo-
spheric pressure
sensor.
1) to the AI
1
2
G
NO
Replace the AI sys-
tem solenoid.
15.Intake solenoid
S Remove the intake solenoid coupler from
the wire harness.
S Connect the pocket tester (Ω
system solenoid terminal as shown.
Tester positive probe ! brown/black
Tester negative probe ! red/white
S Measure the intake solenoid resistance.
Intake solenoid resistance
42 X 48 Ω at 20_C
S Is the intake solenoid OK?
YES
EAS00818
16.Wiring
S Check the entire fuel injection system's wir-
ing.
Refer to "CIRCUIT DIAGRAM".
S Is the fuel injection system's wiring properly
connected and without defects?
YES
Replace the ECU.
8-55
ELEC
1) to the AI
1
2
NO
Replace the intake
solenoid.
NO
Properly connect or
repair the fuel injec-
tion system's wiring.