6-54 FI SYSTEM/ CVT SYSTEM
“C56” CVT THROTTLE POSITION SIGNAL CIRCUIT MALFUNCTION
INSPECTION
DETECTED CONDITION POSSIBLE CAUSE
The CVT throttle position signal is not input to CVT
control unit from ECM for more than 5 sec. after
ignition switch turns ON.
• Lead wire open or short.
• ECM malfunction.
• CVT control unit malfunction.
• Remove the front panel. (
:
9-8)
1
OK
NG
;
CVT throttle signal
Throttle valve is closed: Approx. 3.6 V
Throttle valve is opend: Approx. 1.7 V
z
09900-25008: Multi circuit tester
u
Tester knob indication: Voltage (
-
)
Short circuit in the B/R
lead wire.
Loose or poor contacts.
ECM malfunction.
Check the ECM and CVT control unit couplers for loose
or poor contacts.
If OK, check the CVT throttle signal.
Insert the copper wire to the
+
Brack/Red (
E
) wire of the
CVT control unit coupler.
Turn the ignition switch ON and measure the signal
voltage by turning the throttle grip.
NOTE:
Do not need to disconnect any couplers.
Loose or poor contacts on the CVT control unit
couplers.
CVT control unit malfunction.
CVT control unit
CVT control unit coupler
B/R
ECM couplers
VV
1
1
1
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