Engine General Information and Diagnosis: 1A-32
2 1) Connect the TP sensor coupler.
2) Insert the needle pointed probes to the coupler.
3) Turn the ignition switch ON.
4) Measure the TP sensor output voltage (between positive
terminal: Y and negative terminal: B/Br) by turning the
throttle grip.
TP sensor output voltage
Throttle valve is closed: Approx. 0.6 V
Throttle valve is opened: Approx. 3.8 V
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
Is the voltage OK?
• R or B/Br wire open
or shorted to ground,
or poor (4), (5) or (14)
connection. Refer to
“Terminal Alignment
of ECM Coupler
(Harness Side)
(Page1A-5)”.
• If wire and
connection are OK,
intermittent trouble or
faulty ECM.
• Recheck each
terminal and wire
harness for open
circuit and poor
connection.
• Replace the ECM
with a known good
one, and inspect
again.
If check result is not
satisfactory, replace TP
sensor with a new one.
Step Action Yes No
1
V
(A)
I705H1110018-04
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