1A-27 Engine General Information and Diagnosis:
C31
Gear position signal
Gear position signal voltage should be higher
than the following for 3 seconds and more.
Gear position sensor voltage ≥ 0.6 V
If lower than the above value, C31 (P0705) is
indicated.
GP switch, wiring/coupler
connection, gearshift cam, etc.P0705
C32/C33
C34/C35
Primary fuel injector
CKP sensor (pickup coil) signal is produced,
but fuel injector signal is interrupted 4 times or
more continuously. In this case, the code C32
(P0201), C33 (P0202), C34 (P0203) or C35
(P0204) is indicated.
Primary fuel injector, wiring/
coupler connection, power
supply to the injector
P0201/P0202
P0203/P0204
C36/C37
C38/C39
Secondary fuel injector
Some failure exists in the fuel injector signal in
a high load, high revolution condition. In this
case, the code C36 (P1764), C37 (P1765),
C38 (P1766) or C39 (P1767) is indicated.
Secondary fuel injector, wiring/
coupler connection, power
supply to the injector
P1764/P1765
P1766/P1767
C40/P0505
ISC valve
The circuit voltage of motor drive is unusual.
ISC valve circuit open or
shorted to the ground
Power source circuit open
C40/P0506
Idle speed is lower than the desired idle
speed.
Air passage clogged
ISC valve is fixed
ISC valve preset position is
incorrect
C40/P0507
Idle speed is higher than the desired idle
speed.
ISC valve hose connection
ISC valve is fixed
ISC valve preset position is
incorrect
C41
FP relay
No voltage is applied to the fuel pump,
although fuel pump relay is turned ON, or
voltage is applied to fuel pump although fuel
pump relay is turned OFF.
Fuel pump relay, lead wire/
coupler connection, power
source to fuel pump relay and
fuel injectors
P0230
H
Voltage is applied to fuel pump although fuel
pump relay is turned OFF.
Fuel pump relay switch circuit
shorted to power source
Fuel pump relay (switch side)
L
No voltage is applied to the fuel pump,
although fuel pump relay is turned ON.
Fuel pump relay circuit open or
short
Fuel pump relay (coil side)
C41/P2505
ECM/PCM power input
signal
No voltage is applied to the ECM.
Lead wire/coupler connection
of ECM terminal to fuel fuse
C42
Ignition switch
Ignition switch signal is not input to the ECM.
* When the I.D. agreement is not verified.
* ECM does not receive communication signal
from the immobilizer antenna.
Ignition switch, lead wire/
coupler, etc.
* Immobilizer/anti-theft system
P1650
C44/P0130
HO2 sensor
HO2 sensor output voltage is not input to ECM
during engine operation and running
condition.
(Sensor voltage > 1.0 V)
C44 (P0130) is indicated.
HO2 sensor is circuit open or
shorted to the power source
C44/P0135
The Heater can not operate so that heater
operation voltage is not supply to the oxygen
heater circuit, C44 (P0135) is indicated.
Heated circuit open or shorted
to the ground
Battery voltage supply to the
HO2 sensor
C49 PAIR control solenoid
valve
PAIR control solenoid valve voltage is not
input to ECM.
PAIR control solenoid valve,
lead wire/coupler connectionP1656
C60
Cooling fan relay Cooling fan relay signal is not input to ECM.
Cooling fan relay, lead wire/
coupler connectionP0
480
C62 E
VAP system purge
control solenoid valve
(E-33 only)
EVAP system purge control solenoid valve
voltage is not input to ECM.
EVAP system purge control
solenoid valve, lead wire/
coupler connection
P0443
Malfunction
Code
Detected Item Detected Failure Condition Check For