Motorcycle
【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED LEARNING
Release time:
2021-07-12

Background

Background: A 2020 YAMAHA ZY125T-15 motor, its instrument warning light is on and engine speed is a little bit high after washing throttle. DTC ID shows P0507 with description of 【[For FID/ISC valve]FID/ISC valve(stuck fully open)[For ETV]ldling failure】.

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Maintenance Tips

Maintenance Tips:

It needs to learn about idle speed control after any maintenance below.

●Uninstall and install throttle

●clear throttle

●change throttle

●uninstall and install Idle speed controller


Solutions

Solutions: Using MS80 to operate on follow test:

(54)ISC(idle speed control)valve/FID(fast idle solenoid)

(67)ISC correction value erasure

(87)Air-fuel control learning data erasure


Detail Steps:

Connect MS80 to Motorcycle, enter intoMoto Diag;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickAll, input letters such“YAM”in search bar, clickYAMAHA;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Click the newest YAMAHA edition;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickSelect from system,Auto Scan

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Turn off the ignition, clickEnter;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Turn on the ignition, clickEnter;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Turn off the ignition, clickEnter;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Turn on the ignition, clickEnter;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Turn off the ignition, clickEnter;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Turn on the ignition, clickEnter;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickEngine Control Unit;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickSpecial Function, ldle speed learning

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Click(54)ISC(idle speed control)valve/FID(fast idle solenoid);

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickActuator Checkthree times in 5 seconds;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Operation successful, it shows 0;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Click(67)ISC correction value erasure

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickActuator Checkthree times in 5 seconds, then ISC correction value will be erased;

   Notes: 

               00:the ISC correction value has been erased;

               01:no need to erase the ISC correction value;

               02:erase the ISC correction value.

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


After ISC correction value erasure, it shows 0;

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Click(87)Air-fuel control learning data erasure

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


ClickActuator Checkthree times in 5 seconds to erase the air-fuel control learning data. 

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


After air-fuel control learning data erasure, it shows 0.

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Engine speed shows normal value. It has no fault after clearing all faults. With its instrument warning light off, the problem got resolved.

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL

【SPECIAL FUNCTION】2020 YAMAHA ZY125T IDLE SPEED CONTROL


Summary

If Motorcycle has idle speed instability or a little bit high after uninstalling and installing, clearing, changing throttle, operate on erasure of ISC correction value and air-fuel control learning to solve the problems.


Back to list