Suzuki VZ800 Service Manual page 185

5-28 FI SYSTEM
DETECTED
DTC No.
IAT sensor
C21
H
P0110
L
TO sensor
C23
H
P1651
L
Ignition sig-
nal
C24/C25
P0351/P0352
Secondary
throttle valve
C28
actuator
P1655
STP sensor
C29
H
P1654
L
DETECTED FAILURE CONDITION
ITEM
The sensor voltage should be the fol-
lowing.
0.1 V sensor voltage < 4.6 V
In other than the above range, C21
(P0110) is indicated.
Sensor voltage is higher than specified
value.
Sensor voltage is lower than specified
value.
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
In other than the above value, C23
(P1651) is indicated.
Sensor voltage is higher than specified
value.
Sensor voltage is lower than specified
value.
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) or C25 (P0352) is indicated.
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.
The sensor should produce following
voltage.
0.1 V sensor voltage < 4.8 V
In other than the above range, C29 is
indicated.
Sensor voltage is higher than specified
value.
Sensor voltage is lower than specified
value.
CHECK FOR
IAT sensor, lead wire/coupler
connection
IAT sensor circuit open or
ground circuit open
IAT sensor circuit shorted to
ground
TO sensor, lead wire/coupler
connection
4.6 V
TO sensor circuit open or
shorted to VCC or ground circuit
open
TO sensor circuit shorted to
ground or VCC circuit open
Ignition coil, lead wire/coupler
connection, power supply from
the battery
STVA motor, STVA lead wire/
coupler
STP sensor, lead wire/coupler
connection
STP sensor circuit shorted to
VCC or ground circuit open
STP sensor circuit open or
shorted to ground or VCC circuit
open