0107" Or "0108" Iap Sensor Circuit Malfunction - HYOSUNG 2010 ST7 Service Manual

4-29 EI SYSTEM DIAGNOSIS

"0107" or "0108" IAP SENSOR CIRCUIT MALFUNCTION

LCD (DISPLAY) INDICATION
0107
0108
DETECTED CONDITION
☞ ☞ Refer to page 4-23
NOTE :
Note that atmospheric pressure varies depending on
weather conditions as well as altitude.
Take that into consideration when inspecting voltage.
▣ ▣ INSPECTION
Step 1
1) Remove the fuel tank.
2) Turn the ignition switch "OFF" position.
3) Check the IAP sensor coupler ① for loose or poor
contacts.
If OK, then measure the IAP sensor input voltage.
4) Disconnect the IAP sensor coupler ②.
5) Turn the ignition switch "ON" position.
6) Measure the input voltage at the OB wire and
ground.
If OK, then measure the input voltage at the OB
wire and GR wire.
IAP sensor input
voltage
Tester knob indication : Voltage (
Is the input voltage OK?
Go to Step 2.
YES
● Loose or poor contacts on the ECU
coupler.
NO
● Open or short circuit in the OB wire
or GR wire.
[ 0
[ 0
4.5 ~ 5.5 V
( OB - Ground )
( OB - GR )
)
"FI" CHECK LAMP INDICATION
1 0 7
1 0 8
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.
● ECU malfunction.
0 1 0
0 1 0
①
②
]
]