Suzuki FL125S Service Manual page 326

8-51 FL125SDW
"14" (P0120-H/L) TP SENSOR CIRCUIT MALFUNCTION
DETECTED CONDITION
14 Output voltage is not within the following
value.
Difference between actual throttle open-
ing and opening calculated by ECM is
larger than specified value.
0.3 V Sensor voltage < 4.7 V
P0120 Sensor voltage is higher than specified
H
value.
Sensor voltage is lower than specified
L
value.
TP sensor
NOTE:
TP sensor is incorporated in the IAP sensor/IAT sensor.
INSPECTION
Step 1 (When indicating 14:)
1) Turn the ignition switch OFF.
2) Remove the right leg shield. (#5-6)
3) Check the TP sensor coupler 1 for loose or poor contacts.
If OK, then measure the TP sensor input voltage.
POSSIBLE CAUSE
• TP sensor circuit open or short.
• TP sensor malfunction.
• ECM malfunction.
• TP sensor circuit shorted to VCC or ground circuit
open.
• TP sensor circuit open or shorted to ground or
VCC circuit open.
Br/B
P
R
1
ECM
E2
TP sensor
VCC