FI SYSTEM 4-37
3
Ye s
No
Red, P/W or B/Br wire open or shorted to ground, or poor
0
,
I
or
X
connection. (
:
4-22)
If wire and connection are OK, intermittent trouble or faulty
ECM.
Recheck each terminal and wire harness for open circuit
and poor connection. (
:
4-5)
Replace the ECM with a new one,
and inspect it again.
Connect the TP sensor/injector coupler
1
.
Insert the copper wires to the lead wire coupler.
Turn the ignition switch ON.
Measure the TP sensor output voltage at the coupler
(between P/W and B/Br wires) by turning the throttle grip.
;
TP sensor output voltage
Throttle valve is closed : Approx. 1.1 V
Throttle valve is opened: Approx. 4.3 V
z
09900-25008: Multi circuit tester
u
Tester knob indication: Voltage (
-
)
If check result is not satisfactory,
replace TP sensor with a new one.
V
P/WP/W
B/BrB/Br
ECM coupler
3