P0A78-586

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P0A78-586: Drive Motor "A" Inverter Performance
P0A78-586 - Drive Motor "A" Inverter Performance

DESCRIPTION

Refer to the description for DTC P0A78-266 P0A78-266.

The signal line from the inverter voltage (VH) sensor is connected to the MG ECU inside the inverter with converter assembly. If P0A78-586 is output, replace the inverter with converter assembly.





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 (READY) and turn the Techstream on.

6. With the shift lever in D, depress both the accelerator pedal and brake pedal at the same time to raise the SOC to a sufficient level.

7. Push the P position switch, check that the engine is stopped and move the shift lever to N.

8. Set the A/C for maximum cooling.

9. Leave the vehicle for a few minutes.

10. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

11. Check that permanent DTCs are cleared.

12. If the permanent DTCs are not cleared, perform the 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 (HYBRID CONTROL)

(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:





Table 1





Table 2





HINT
- *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
- P0A78-586 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.

(e) Turn the power switch off.

B -- GO TO DTC CHART (HYBRID CONTROL SYSTEM) Hybrid Control System

C -- GO TO DTC CHART (HYBRID BATTERY SYSTEM) Hybrid Battery System

A -- REPLACE INVERTER WITH CONVERTER ASSEMBLY Components