Code No. P0ABA:
Motor drive voltage sensor error (MCU)
ELECTRIC MOTOR UNIT CONTROL SYSTEM CIRCUIT
DIAGNOSIS CODE SET CONDITIONS
If the smooth condenser voltage is kept at 10 V or less while the READY indicator lamp
is lit, the MCU will set the diagnosis code No. P0ABA.
PROBABLE CAUSES
- Damaged high-voltage harness wires
- Malfunction of the MCU (smooth condenser voltage sensor)
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STEP 1. High-voltage connector check: G-05, G-06 MCU high-voltage
terminal, G-18, G-19 main battery high-voltage terminal
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Carry out the check on the high-voltage circuit while reading
carefully the precautions on handling a high-voltage vehicle. (Refer to  .)
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Wear the specified protection equipment during the check.
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(1)Shut down the high voltage.
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(2)Check that the following terminals are tightened to the specified torque. (Refer
to , .)
- G-05, G-06 MCU high-voltage terminal
- G-18, G-19 main battery high-voltage terminal
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Q.
Is the check result normal?
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 Go to Step 2.
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 Tighten the high-voltage terminal to the specified torque. Refer to , .)
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STEP 2. G-05, G-06 MCU to G-18, G-19 main battery high-voltage harness
check
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Carry out the check on the high-voltage circuit while reading
carefully the precautions on handling a high-voltage vehicle. (Refer to .)
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Wear the specified protection equipment during the check.
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(1)Shut down the high voltage.
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(2)Visual check between the G-05, G-06 MCU high-voltage terminal and G-18, G-19 main
battery high-voltage terminal
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Q.
Is the check result normal?
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Go to Step 3.
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Replace the high-voltage harness.
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STEP 3. Diagnosis code recheck
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Check again if the diagnosis code is set to the MCU.
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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)Set the electric motor switch to the "START" position, and start the electric motor
unit.
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(4)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
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Replace the MCU.(Refer to .) Then go to Step
4.
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The diagnosis is complete.
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STEP 4. Diagnosis code recheck
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Check again if the diagnosis code is set to the MCU.
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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)Set the electric motor switch to the "START" position, and start the electric motor
unit.
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(4)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
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Go to Step 1.
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The diagnosis is complete.
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