FI SYSTEM DIAGNOSIS 4-31
DTC No.
DETECTED
ITEM
DETECTED FAILURE CONDITION CHECK FOR
C21
IAT sensor The sensor voltage should be the fol-
lowing.
0.15 V sensor voltage < 4.85 V
In other than the above range, C21
(P0110) is indicated.
IAT sensor, lead wire/coupler
connection
P0110
H
Sensor voltage is higher than specified
value.
IAT sensor circuit open or
ground circuit open
L
Sensor voltage is lower than specified
value.
IAT sensor circuit shorted to
ground
C22
AP sensor The sensor voltage should be the fol-
lowing.
0.5 V sensor voltage < 4.85 V
In other than the above range, C22
(P1450) is indicated.
AP sensor, wiring/coupler con-
nection
P1450
H
Sensor voltage is higher than specified
value.
AP sensor circuit shorted to
VCC or ground circuit open
L
Sensor voltage is lower than specified
value.
AP sensor circuit open or
shorted to ground or VCC circuit
open
C23
TO sensor The sensor voltage should be the fol-
lowing for 2 sec. and more, after igni-
tion switch is turned ON.
0.2 V sensor voltage < 4.8 V
In other than the above value, C23
(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 ground or VCC circuit
open
C24/C25
C26/C27
Ignition
signal
CKP sensor (pick-up coil) signal is pro-
duced, but signal from ignition coil is
interrupted 8 times or more continu-
ously. In this case, the code C24
(P0351), C25 (P0352), C26 (P0353) or
C27 (P0354) is indicated.
Ignition coil, wiring/coupler con-
nection, power supply from the
battery
P0351/P0352
P0353/P0354
C28
STV actuator When no actuator control signal is
supplied from the ECM, communica-
tion signal does not reach ECM or
operation voltage does not reach
STVA motor, C28 (P1655) is indicated.
STVA can not operate.
STVA motor, STVA lead
wire/coupler
P1655
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