Suzuki FL125S Service Manual page 321

"13" (P0105-H/L) IAP SENSOR CIRCUIT MALFUNCTION
DETECTED CONDITION
13 IAP sensor voltage is not within the fol-
lowing value.
0.2 V Sensor voltage < 4.5 V
NOTE:
Note that atmospheric pressure varies
depending on weather conditions as
well as altitude.
Take that into consideration when
inspecting voltage.
P0105 Sensor voltage is higher than specified
H
value.
Sensor voltage is lower than specified
L
value.
IAP sensor
NOTE:
IAP sensor is incorporated in the TP sensor/IAT sensor.
INSPECTION
Step 1 (When indicating 13:)
1) Turn the ignition switch OFF.
2) Remove the right leg shield. (#5-6)
3) Check the IAP sensor coupler 1 for loose or poor contacts.
If OK, then measure the IAP sensor input voltage.
POSSIBLE CAUSE
• Clogged vacuum passage between throttle body
and IAP sensor.
• Air being drawn from vacuum passage between
throttle body and IAP sensor.
• IAP sensor circuit open or shorted to ground.
• IAP sensor malfunction.
• ECM malfunction.
• IAP sensor circuit open or shorted to VCC or
ground circuit open.
• IAP sensor circuit shorted to ground or VCC cir-
cuit open.
G/B
Br/B
R
1
FL125SDW 8-46
ECM
IAP
E2
VCC