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TROUBLESHOOTING
DTC
Detecting Item
3A442
Battery cell low
temperature
protection
(at charging)
3A443
Battery cell low
temperature
protection
(at discharging)
4-12
Failure Condition/
Possible Cause
Battery cell overcools
resulting in battery not
being activated by itself
Battery cannot be charged
due to charger left at low
temperature for long time
etc. (Charger side is
abnormal or not)
Low ambient temperature
of 0°C (32°F) or less
Damaged battery
Battery cell overcools
resulting in battery not
being activated by itself
PDU malfunction
Low ambient temperature
of -20°C (-4°F) or less
Damaged battery
Verification Item (Check in numerical order)
Applicable Part
1. Battery cell temperature
(connected with Dr. H)
2. Battery indicator (single
unit)
3. Battery charger (battery
pack installed)
4. Charger indicator (battery
pack installed)
5. Battery peripheral area
(installed on charger)
6. Battery pack
1. Battery cell temperature
(connected with Dr. H)
2. Battery indicator (single
part)
3. PDU (battery pack
installed on power unit)
4. PDU (power unit indicator)
(battery pack installed on
power unit)
5. Battery peripheral area
(installed on power unit)
6. Battery pack
Check for
(abnormal symptom)
Cell temperature is 0°C
(32°F) or less
ALERT (Orange)
indicator of battery pack
flashes, pressing check
button
Charger does not start
charging
ERROR (Red) indicator
of charger stays on
during charging
Peripheral temperature is
0°C (32°F) or less
Replace battery pack
Cell temperature is -20°C
(-4°F) or less
ALERT (Orange)
indicator of battery pack
flashes, pressing check
button
Motor operation by
performing the starting
procedure
ALERT (Orange)
indicator of power unit
flashes during
discharging (POWER
button pressed to ON)
Peripheral temperature is
-20°C (-4°F) or less
Replace battery pack
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