CHILL 125 cc. SERVICE MANUAL AND EFI DIAGNOSTIC
37
4
Use multimeter to check whether the resistance of the two coil pins is 0.5-0.65Ω
@20
℃
Yes
Change coil
No
Next
5
Use multimeter to check whether the voltage of pin B is about 12V.
Yes
Help
No
Next
6
Check whether the connection of pin 2 of the coil and J2-01 of ECU is open or short to
battery/ground.
Yes
Harness issue
No
Help
Malfunction code
:
P0505
Information
:
Idle Speed Control Error
ITEM
OPERATION
RESULT
NEXT STEP
1
Connect the diagnostic tool, and ignition off
next
2
Remove the connector. Use multimeter to check whether the resistance between pin
A and pin D, pin B and pin C is about 53±5.3Ω
Yes
Next
No
Change stepper motor
3
Check whether the 4 wires are short to battery/ground or open.
Yes
Harness issue
No
Help