P0A78-565 - Drive Motor "A" Inverter Performance

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P0A78-565: Drive Motor "A" Inverter Performance
P0A78-565 - Drive Motor "A" Inverter Performance

DESCRIPTION

For a description of the inverter, P0A78.

If an overvoltage occurs in the motor inverter, generator inverter or rear motor inverter, the MG ECU detects it and transmits this information to the power management control ECU (HV CPU).





MONITOR DESCRIPTION

The power management control ECU (HV CPU) monitors the inverter voltage (VH) sensor signal. If the power management control ECU (HV CPU) detects a fault in the sensor signal, the power management control ECU (HV CPU) interprets this as a VH sensor failure. The power management control ECU (HV CPU) will illuminate the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN





1. Connect the Techstream to the DLC3.

2. Turn the power switch on (IG) and turn the Techstream on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4. Turn the power switch off.

5. Turn the power switch on (IG) and check that there are no abnormalities (abnormal sounds, coolant leaks, DTC output, etc).

6. Turn the power switch on (READY) and turn the Techstream on. [A]

7. With the shift lever in P, wait for several seconds.

8. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [B]

9. Check that permanent DTCs are cleared.

10. If the permanent DTCs are not cleared, perform a universal trip, and then check for permanent DTCs again.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:





B -- GO TO DTC CHART Hybrid Control System
A -- Continue to next step.

2. CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) P0343

NG -- CONNECT SECURELY

OK -- REPLACE INVERTER WITH CONVERTER ASSEMBLY Components