HYOSUNG MS3 125, Sercie Manual

Page: 219 / 257

9-1 SERVICING INFORMATION
TROUBLESHOOTING
◉ ◉
MALFUNCTION CODE AND DEFECTIVE CONDITION
C14
C15
C17
C21
C22
C23
Throttle position sensor
(TPS)
Water temperature
sensor (WTS)
Intake air pressure
sensor (IAPS)
Intake air temperature
sensor (IATS)
Oxygen sensor (O
2
S)
Tip over sensor (TOS)
The oxygen sensor signal is input in ECU since then 120 sec
after the engine run.
When this is the case, ECU not receive the signal, C22 is indi-
cated.
The sensor voltage should be the following.
0.1 V
�
sensor voltage
�
4.6 V
Without the above range for 4 sec. and more, C21 is indicated.
The sensor should produce following voltage.
0.1 V
� sensor voltage � 4.8 V
Without the above range for 4 sec. and more, C17 is indicated.
The sensor voltage should be the following.
0.1 V
� sensor voltage � 4.6 V
Without the above range for 4 sec. and more, C15 is indicated.
The sensor should produce following voltage.
0.1 V
�
sensor voltage
�
4.8 V
Without the above range for 4 sec. and more, C14 is indicated.
The sensor voltage should be the following for more than 2 sec.
after ignition switch turns “ ” (ON) position.
4.5 V
�
sensor voltage
�
5.5 V
Without the above value for 2 sec. and more, C23 is indicated.
Tip over sensor, lead wire / coupler connection.
Intake air temperature sensor, lead wire / coupler connection.
Intake air pressure sensor, lead wire / coupler connection.
Throttle position sensor, lead wire / coupler connection.
Water temperature sensor, lead wire / coupler connection.
Oxygen sensor, lead wire / coupler connection.
DETECTED ITEM
DETECTED FAILURE CONDITION
CHECK FOR
MALFUNCTION
CODE