Troubleshooting - KYMCO MXU 500 User Manual

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. BATTERY/CHARGING SYSTEM

TROUBLESHOOTING

Battery is damaged or weak

Remove the battery.

Check the battery condition.

Install the battery.

Check the battery current leakage.

Specified current leakage: 0.5 Ma

Check the alternator charging coil.

Standard: 0.1 – 0.3 Ω (20°C/68°F)

Measure and record the battery

voltage using a digital multimeter.

Start the engine.

Measure the charging voltage.

Compare the measurements to result

of the following calculation.

Measured voltage < measured

charging voltage < 15.5 V

Perform the regulator/rectifier wire

harness inspection.

•Faulty regulator/rectifier

•Faulty battery

Disconnect the regulator/rectifier

connectors and recheck the battery

current leakage.

•Faulty charging coil.

•Faulty battery.

•Open circuit in related wire.

•Loose or poor contacts of related

•Shorted wire harness

•Faulty regulator/rectifier.

•Shorted wire harness.

•Faulty ignition switch.

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