D439E Service Manual 5. Service Tool
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3. Select in <Figure 5> at the bottom of ECU upgrade windows, then following message will
be shown.
<Figure 8: ECU Auto Upgrade – STEP 2>
CAUTION
<Figure 9: Low Voltage>
The pop up screen warns low voltage of battery prompted in the STEP 2 battery voltage check level.
To follow the instruction given before proceeding the ECU upgrade.
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