FUEL INJECTION SYSTEM
8-69
Fault code No. 32 Symptom The amount of air-fuel ratio feedback compensation is
maintained continuously in the vicinity of the lower limit
(rich air-fuel ratio).
Diagnostic code No. 01 Throttle position sensor
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• O
2
sensor coupler
• Relay unit coupler
• Wire harness ECU coupler
• Sub-wire harness coupler
• Front cowling wire harness coupler
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
Starting the en-
gine, warming it
up until the
coolant temper-
ature is 60 °C
or more, and
then running it
between 2000–
3000 r/min un-
til the engine
trouble warn-
ing light turns
off.
2 Open or short circuit in wire harness,
sub-wire harness and/or front cowling
wire harness.
• Repair or replace if there is an
open or short circuit.
• Between O
2
sensor coupler and
ECU coupler.
(black/blue–black/blue)
(gray/white–gray/white)
• Between O
2
sensor coupler and
relay unit coupler.
(red/blue–red/blue)
• Between O
2
sensor coupler and
sub-wire harness coupler.
(black–black)
3 Defective O
2
sensor Replace if defective. (Unable to
output a rich signal)
4 Excessive volume of fuel injected by
injector.
• Check the injector.
• Check the fuel pressure.
Refer to “CHECKING THE
FUEL PRESSURE” on page
7-7.
To Next Page
Loading...
