Suzuki FL125S Service Manual page 317

DETECTED
DTC No.
ITEM
TO sensor
23
H
P1651
L
Ignition
signal
24
P0351
Fuel injector
32
P0201
ISC valve
40
P0505
42 Ignition
P1650 switch
HO2 sensor
44
P0130
44
P0135
DETECTED FAILURE CONDITION
The sensor voltage should be the fol-
lowing for 2 sec. or more, after ignition
switch is turned ON.
0.2 V sensor voltage < 4.6 V
In other than the above value, 23
(P1651) is indicated.
Sensor voltage is higher than specified
value.
Sensor voltage is lower than specified
value.
CKP sensor signal is produced, but
signal from ignition coil is interrupted
10 times or more continuously. In this
case, the code 24 (P0351) is indicated.
CKP sensor signal is produced, but
fuel injector signal is interrupted 10
times or more continuously. In this
case, the code 32 (P0201) is indicated.
When the ISC operation voltage
remains at 1.0 V or lower continuously
for 2 sec. or longer.
Idle speed is higher than the normal
condition.
Ignition switch signal is not input to the
ECM.
HO2 sensor output voltage is not input
to ECM during engine operation and
running condition.
(Sensor voltage < 0.60 V)
In other than the above value, 44
(P0130) is indicated.
The Heater can not operate so that
heater operation voltage is not supply
to the oxygen heater circuit, 44
(P0135) is indicated.
FL125SDW
CHECK FOR
TO sensor, lead wire/coupler
connection.
TO sensor circuit open or
shorted to VCC or ground circuit
open.
TO sensor circuit shorted to
ground or VCC circuit open.
Ignition coil, wiring/coupler con-
nection, power supply from the
battery.
Primary fuel injector, wiring/cou-
pler connection, power supply to
the injector.
ISC valve circuit open or shorted
to ground.
Power source circuit open ISC
valve is fixed to full open.
Disconnected ISC valve hose.
Ignition switch, lead wire/coupler,
etc.
HO2 sensor circuit open or
shorted to ground.
Battery voltage supply to the
HO2 sensor.
HO2 sensor lead wire/coupler
connection.
HO2 sensor heater circuit open
or shorted torground.
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