DTC    P0C76-523    Hybrid Battery System Discharge Time Too Long

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DESCRIPTION

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

DTC No.
INF Code
DTC Detection Condition
Trouble Area
P0C76
523
Inverter voltage (VH) sensor offset malfunction
Inverter with converter assembly

HINT:
When the power switch is turned off, the MG ECU applies current to MG2 in a way that does not generate torque, in order to discharge the residual voltage in the inverter. When the hybrid system is normal, the VH value is almost 0 V after discharge. This DTC will be stored if the VH value is more than the specified value after discharge.


A111758E02


INSPECTION PROCEDURE

1.CHECK DTC OUTPUT (HYBRID CONTROL)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: Powertrain / Hybrid Control / DTC.

  1. Check if DTCs are output.

    Result:
    Result
    		Proceed to
    P0C76-523 only is output.
    		A
    Any of the following DTCs are also output.
    		B


    DTC No.
    		Relevant Diagnosis
    P0A1A-151, 155, 156, 200, 658, 659, 791, 792, 793
    		Generator Control Module
    P0A1B-163, 164, 168, 193, 511, 661, 786, 794, 795, 796
    		Drive Motor "A" Control Module
    P0A1D-148
    		Hybrid Powertrain Control Module
    P0A3F-243
    		Drive Motor "A" Position Sensor Circuit
    P0A40-500
    		Drive Motor "A" Position Sensor Circuit Range/Performance
    P0A41-245
    		Drive Motor "A" Position Sensor Circuit Low
    P0A4B-253
    		Generator Position Sensor Circuit
    P0A4C-513
    		Generator Position Sensor Circuit Range/Performance
    P0A4D-255
    		Generator Position Sensor Circuit Low
    P0A78-266, 267
    		Drive Motor "A" Inverter Performance
    P0ADC-226
    		Hybrid Battery Positive Contactor Control Circuit High
    P0AE0-228
    		Hybrid Battery Negative Contactor Control Circuit High
    P0AE7-224
    		Hybrid Battery Precharge Contactor Control Circuit High
    P2511-149
    		ECM/PCM Power Relay Sensor Circuit Intermittent
    P324E-788
    		MG-ECU Power Relay Intermittent Circuit
    U0110 (all INF codes)*1
    		Lost Communication with Drive Motor Control Module

    HINT:
    1. *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
    2. P0C76-523 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.

  1. Turn the power switch off.



B
GO TO DTC CHART (HYBRID CONTROL SYSTEM) (Click here)
A

REPLACE INVERTER WITH CONVERTER ASSEMBLY (Click here)