HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A78-586

DTC Code DTC Name
P0A78-586 Drive Motor "A" Inverter Performance

DESCRIPTION

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

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.

DTC No. INF Code DTC Detection Condition Trouble Area
P0A78 586 Inverter voltage (VH) sensor performance problem Inverter with converter assembly

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC OUTPUT (HV)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

    4. Check if DTCs are output.

      Result
      Result Proceed to

      P0A78-586 only is output.

      (for LHD)

      		 A

      P0A78-586 only is output.

      (for RHD)

      		 B
      Any of the following DTCs are also output. C
      DTC No. Relevant Diagnosis
      P0A1A (all INF codes) *1 Generator Control Module
      P0A1B (all INF codes) *1 Drive Motor "A" Control Module
      P0A1D (all INF codes) *1 Hybrid Powertrain Control Module

      Tech Tips


      • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic flowchart.

      • P0A78-586 may be set due to a malfunction which also causes DTCs in the preceding table to be set. In this case, first troubleshoot the output DTCs in the preceding table. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.


    B

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here

    C

    GO TO DTC CHART Click here

    A

    REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here