1A-31 Engine General Information and Diagnosis:
Step Action Yes No
1 1) Turn the ignition switch OFF.
2) Remove the helmet box front cover. (Refer to “Helmet
Box Front Cover Removal and Installation in Section 9D
(Page9D-16)”.)
3) Check the TP sensor (1) coupler for loose or poor
contacts.
If OK, then measure the TP sensor input voltage.
4) Disconnect the TP sensor coupler (1).
5) Turn the ignition switch ON.
6) Measure the voltage at the R wire and ground.
If OK, then measure the voltage at the R wire and B/Br
wire.
TP sensor input voltage
4.5 – 5.5 V
(Positive terminal: R – Negative terminal: Ground,
Positive terminal: R – Negative terminal: B/Br)
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
Is the voltage OK?
Go to Step 2. • Loose or poor
contacts on the ECM
coupler (terminal (14)
and (4)). Refer to
“Terminal Alignment
of ECM Coupler
(Harness Side)
(Page1A-5)”.
• Open or short circuit
in the R wire or B/Br
wire.
1
I705H1110041-01
V
B/Br
R
(A)
I705H1110021-04
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