DTC    P0A69-677    Drive Motor "B" Phase V Current

DTC    P0A69-679    Drive Motor "B" Phase V Current

DTC    P0A69-680    Drive Motor "B" Phase V Current

DTC    P0A69-683    Drive Motor "B" Phase V Current

DTC    P0A69-684    Drive Motor "B" Phase V Current

DTC    P0A69-688    Drive Motor "B" Phase V Current

DTC    P0A6C-678    Drive Motor "B" Phase W Current

DTC    P0A6C-681    Drive Motor "B" Phase W Current

DTC    P0A6C-682    Drive Motor "B" Phase W Current

DTC    P0A6C-685    Drive Motor "B" Phase W Current

DTC    P0A6C-686    Drive Motor "B" Phase W Current

DTC    P0A6C-689    Drive Motor "B" Phase W Current

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DESCRIPTION

The MG ECU monitors the inverter current sensor. The ECU is for detecting a malfunction in the sensor lines and does not detect malfunctions in the high-voltage lines.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0A69
677
Performance problem of the rearmotor inverter current sensor phase V
  1. w/ converter inverter assembly
↑
679
Open in rear motor inverter current sensor (phase V main sensor) circuit
  1. w/ converter inverter assembly
↑
680
Open in rear motor inverter current sensor (phase V sub sensor) circuit
  1. w/ converter inverter assembly
↑
683
Malfunction in the rear motor inverter current sensor (phase V main sensor)
  1. w/ converter inverter assembly
↑
684
Malfunction in rear motor inverter current sensor (phase V sub sensor)
  1. w/ converter inverter assembly
↑
688
Malfunction in rear motor inverter current sensor (phase V main and sub sensors offset)
  1. w/ converter inverter assembly
P0A6C
678
Performance problem of the rear motor inverter current sensor phase W
  1. w/ converter inverter assembly
↑
681
Open in rear motor inverter current sensor (phase W main sensor) circuit
  1. w/ converter inverter assembly
↑
682
Open in rear motor inverter current sensor (phase W sub sensor)
  1. w/ converter inverter assembly
↑
685
Malfunction in rear motor inverter current sensor (phase W main sensor)
  1. w/ converter inverter assembly
↑
686
Malfunction in rear motor inverter current sensor (phase W sub sensor)
  1. w/ converter inverter assembly
↑
689
Malfunction in rear motor inverter current sensor (phase W main and sub sensors offset)
  1. w/ converter inverter assembly

MONITOR DESCRIPTION

The MG ECU monitors the rear motor inverter current sensor. If the HV control ECU detects a fault, it will illuminate the MIL and set a DTC.

INSPECTION PROCEDURE

CAUTION:
  1. Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from reconnecting it while you are working on the high-voltage system.
  2. After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.

HINT:
At least 5 minutes is required to discharge the high-voltage capacitor inside the w/ converter inverter assembly.

1.CHECK CONNECTION CONDITION OF MG ECU CONNECTOR (LOOSENESS AND POOR CONTACT)

CAUTION:
Be sure to wear insulated gloves.



    A103665E03

  1. Turn the ignition switch off and remove the service plug grip. (Click here)

    NOTICE:
    Do not put the vehicle into the READY-on state with the service plug grip removed as this may cause a malfunction.

  1. Remove the inverter cover. (Click here)

    NOTICE:
    1. Wrap the interlock round terminal for the inverter cover with vinyl tape to prevent it from shorting to ground.
    2. Prevent water in the reservoir tank from entering the inverter.
    3. Removing the inverter cover causes the MG ECU board to be exposed. Therefore, temporarily install the inverter cover for each area to be inspected.

  1. Check the connections of the MG ECU connectors.

    OK:
    Connectors are connected securely and there is no poor connection.



NG
CONNECT SECURELY
OK

REPLACE W/ CONVERTER INVERTER ASSEMBLY