Code No. P1A12: On board charger abnormal stop
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If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, always diagnose the CAN bus lines.
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OPERATION
The on board charger communicates with EV-ECU via CAN.
DIAGNOSIS CODE SET CONDITIONS
- When the diagnosis code (except for No. 26, No. 32) is set to the on board charger, the diagnosis code No. P1A12 will be set.
PROBABLE CAUSES
- Malfunction of the charging current system for the on board charger
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STEP 1. M.U.T.-III CAN bus diagnosis
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Use the M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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 Go to Step 3.
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 Repair the CAN bus line. (Refer to GROUP 54C - Troubleshooting  .) Then go to Step 2.
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STEP 2. Diagnosis code recheck after resetting CAN bus lines
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Check again if the diagnosis code No. P1A12 is set to the EV-ECU.
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(1)Erase the stored diagnosis code.
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(2)Set the electric motor switch from the LOCK (OFF) position to the ON position.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
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Go to Step 3.
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This diagnosis is complete.
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STEP 3. Use M.U.T.-III to confirm a diagnosis code of other systems.
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Check if the diagnosis code is set to the on board charger.
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Q.
Is the diagnosis code set?
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Carry out troubleshooting for the diagnosis code (refer to ). Then go to Step 4.
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Go to Step 4.
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STEP 4. Diagnosis code recheck
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Check again if the diagnosis code is set to the EV-ECU.
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(1)Erase the stored diagnosis code.
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(2)Connect the regular charging gun. Or connect the M.U.T.-III..
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
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Return to Step 1.
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The diagnosis is complete.
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