Code No. P1A29:
Motor overcurrent (MCU)
ELECTRIC MOTOR UNIT CONTROL SYSTEM CIRCUIT DIAGNOSIS CODE SET CONDITIONS PROBABLE CAUSES
High-voltage harness check
Malfunction of the MCU
Malfunction of the motor (electric motor unit)
STEP 1. High-voltage connector check: G-07, G-08, G-09
MCU high-voltage terminal
danger Carry out the check on the high-voltage circuit while reading
carefully the precautions on handling a high-voltage vehicle. (Refer to
danger Wear the specified protection equipment during the check.
(1)Shut down the high voltage.
(2)Check that the following terminals are tightened to the specified torque. (Refer
to
G-07, G-08, G-09 MCU high-voltage terminal
Q.
Is the check result normal?
STEP 2. Diagnosis code recheck
Check again if the diagnosis code is set to the EV-ECU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Set the electric motor switch to the "START" position, and start the electric motor
unit.
(4)Check if the diagnosis code is set.
Q.
Is the diagnosis code set?
STEP 3. Diagnosis code recheck
Check again if the diagnosis code is set to the MCU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Set the electric motor switch to the "START" position, and start the electric motor
unit.
(4)Check if the diagnosis code is set.
Q.
Is the diagnosis code set?
STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the MCU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Set the electric motor switch to the "START" position, and start the electric motor
unit.
(4)Check if the diagnosis code is set.
Q.
Is the diagnosis code set?
MMC-Manuals.ru
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)
.)
Go to Step 2.
Tighten the high-voltage terminal to the specified torque. Refer to 