XY Powersports XY500UTV, Руководство по обслуживанию

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13. TROUBLESHOOTING
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Errors coding: P0458 Control circuit voltage of idle air control valve too low
Maintenance Tips
：
The possible faults may exists as follow:
1
）
Circuit ECU connected is short circuit
Maintenance Tips
：
Check the item as follow:
1
）
Measure connected to the ECU
pin-to-ground
resistance whether proper or not
Errors coding: P0459 Control circuit voltage of idle air control valve too high
Maintenance Tips
：
The possible faults may exists as follow:
1
）
Short circuit between ECU circuit connected
and No.1 pin of idle air control valve.
2
）
Short circuit between circuit ECU pin
connected and other electrical source circuits
Maintenance Tips
：
Check the item as follow:
1
）
Measure the voltage of ECU pin whether
normal or not
2
）
Measure resistance between ECU pin and
No.1 pin of idle air control valve
Errors coding: P0501Speed sensor signal improper.
Explanation: When loose throttle and keep direct to free-wheel, ECU measure engine rotate speed
and vehicle speed together. If engine lasting higher speed but vehicle speed display “0” or too low
obviously, system will judge that vehicle speed signal faults.
Maintenance Tips
：
The possible faults may exists as follow:
1
） The signal circuit ECU connected and
vehicle
speed sensor short to ground or open to ground.
Maintenance Tips ：
Check the item as follow:
1) Check circuit resistance that connecter of
ECU joint to vehicle speed signal sensor.
2
） Check resistance to ground of ECU pin.
Errors coding:
P0506 Rotate speed of idle air control valve slower than target idle speed
Explanation: Engine rotate speed of idle speed control valve works by closed-loop control. And it
indicates fault if ECU performs idle speed controlling after a certain time, but the actual engine
speed still slower than target idle speed.
Maintenance Tips
：
The possible faults may exists as follow:
1
）
Idle air control valve not work.
2
）
Check adjust bolt of throttle valve
、
throttle
cable
、
throttle operating condition etc. whether
are in condition or not.
3
）
Too dirty inside of throttle valve body
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