1A-23 Engine General Information and Diagnosis:
23
TO sensor
The sensor voltage should be the following for
5 seconds. and more.
0.3 V ≤ sensor voltage < 4.5 V
In other than the above value, 23 (P1651) is
indicated.
TO sensor, lead wire/coupler
connection.
P1651
H Sensor voltage is higher than specified value.
TO sensor circuit shorted to
VCC or ground circuit open.
L Sensor voltage is lower than specified value.
TO sensor circuit open or
shorted to the ground or VCC
circuit open.
24
Ignition signal
CKP sensor (pick-up coil) signal is produced,
but signal from ignition coil is interrupted 5
times or more continuously. In this case, the
code 24 (P0351) is indicated.
Ignition coil, wiring/coupler
connection, power supply from
the battery.
P0351
31
Gear position signal
Gear position signal voltage should be higher
than the following for 30 seconds and more.
Gear position sensor voltage ≥ 0.6 V.
If lower than the above value, 31 (P0705) is
indicated.
GP switch, wiring/coupler
connection, gearshift cam, etc.P0705
32
Fuel injector
CKP sensor (pick-up coil) signal is produced,
but fuel injector signal is interrupted 8 times or
more continuously. In this case, the code 32
(P0201) is indicated.
Fuel injector, wiring/coupler
connection, power supply to
the injector.
P0201
41
Fuel pump relay
No voltage is applied to the fuel pump,
although FP relay is turned ON.
NOTE
The FP relay is incorporated in the
ECM.
FP relay, lead wire/coupler
connection, power source to
FP relay.
P0230
63
Crankshaft rotation
signal sensor
The signal does not reach ECM for 30
seconds. or more.
Crankshaft rotation signal
sensor wiring and mechanical
parts.
Crankshaft rotation signal
sensor, lead wire/coupler
connection.
P1771
DTC No. Detected Item Detected Failure Condition Check For
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