P0A6C-685

P310 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0A69-677: Drive Motor "B" Phase V Current

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

DESCRIPTION

The MG ECU monitors the inverter current sensor. These DTCs are for malfunctions in the sensor lines and not for malfunctions in the high-voltage lines.
HINT: The term "drive motor B" indicates MGR.





MONITOR DESCRIPTION

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

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE

P0A69 (INF 677/679/680/683/684/688)





P0A6C (INF 678/681/682/685/686/689)





INSPECTION PROCEDURE
CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals. After waiting for 5 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT: Waiting for at least 5 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (MG ECU CONNECTOR)
CAUTION: Be sure to wear insulated gloves.
(a) Turn the power switch off.
(b) Remove the service plug grip Removal.
NOTE: After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(c) Remove the inverter cover Removal.
NOTICE:
- Wrap the round interlock terminal for the inverter cover with insulating tape to prevent it from shorting to ground.
- Prevent coolant in the inverter reserve tank from entering the inverter.
- Removing the inverter cover causes the MG ECU board to be exposed. Therefore, temporarily install the inverter cover for each area to be inspected.





(d) Check the connections of the MG ECU connectors.
OK:
The connectors are connected securely and there are no contact problems.
NG -- CONNECT SECURELY
OK -- REPLACE INVERTER WITH CONVERTER ASSEMBLY