DTC P0C76-00: Hybrid/EV Battery System Discharge Time Too Long [09/2023 - ]: Procedure

Pre-procedure1

• None.

• Check for DTCs.

  Powertrain > Hybrid Control > Trouble Codes 

  Powertrain > Motor Generator > Trouble Codes 

  Result

  Result	Proceed to
  P0C76-00 only is output, or DTCs except the ones in the table below are also output.	A
  DTCs of Hybrid Control System in the tables below are output.	B
  DTCs of Motor Generator Control System in the tables below are output.	C

  Malfunction Content	System	Relevant DTC
  Microcomputer malfunction	Hybrid Control System	P0606-47	Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure
  		P0606-87	Hybrid/EV Powertrain Control Module Processor to Monitoring Processor Missing Message
  		P060A-47	Hybrid/EV Powertrain Control Module Monitoring Processor Watchdog / Safety MCU Failure
  		P060A-87	Hybrid/EV Powertrain Control Module Processor from Monitoring Processor Missing Message
  		P1C9E-9F	Hybrid/EV System Reset Stuck Off
  	Motor Generator Control System	P0A1B-1F	Generator Control Module Circuit Intermittent
  		P1C2B-1C	Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range
  		P1CAD-49	Drive Motor "A" Position Sensor Internal Electronic Failure
  		P1CB0-38	Drive Motor "A" Position Sensor REF Signal Frequency Incorrect
  		P0A1B-47	Drive Motor "A" Control Module Watchdog / Safety MC Failure
  Power source circuit malfunction	Motor Generator Control System	P06D6-1C	Generator Control Module Offset Power Circuit Voltage Out of Range
  		P06B0-1C	Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range
  Communication system malfunction	Hybrid Control System	U117E-87	Lost Communication with Drive Motor Control Module "A" (ch4) Missing Message
  Sensor and actuator circuit malfunction	Hybrid Control System	P0AD9-11	Hybrid/EV Battery Positive Contactor Circuit Short to Ground
  		P0AD9-15	Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open
  		P0ADD-11	Hybrid/EV Battery Negative Contactor Circuit Short to Ground
  		P0ADD-15	Hybrid/EV Battery Negative Contactor Circuit Short to Auxiliary Battery or Open
  		P0AE4-11	Hybrid/EV Battery Precharge Contactor Circuit Short to Ground
  		P0AE4-15	Hybrid/EV Battery Precharge Contactor Circuit Short to Auxiliary Battery or Open
  	Motor Generator Control System	P0A3F-16	Drive Motor "A" Position Sensor Circuit Voltage Below Threshold
  		P0C50-13	Drive Motor "A" Position Sensor Circuit "A" Circuit Open
  		P0C50-16	Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Below Threshold
  		P0C50-17	Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Above Threshold
  		P0C5A-13	Drive Motor "A" Position Sensor Circuit "B" Circuit Open
  		P0C5A-16	Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Below Threshold
  		P0C5A-17	Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Above Threshold
  System malfunction	Hybrid Control System	P0D2D-1C	Drive Motor "A" Inverter Voltage Sensor Voltage Out of Range
  		P1C83-49	High Voltage Power Resource Circuit Voltage Sensor after Boosting Malfunction
  	Motor Generator Control System	P0D2D-16	Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Below Threshold
  		P0D2D-17	Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold
  		P1CB6-9E	Drive Motor "A" Inverter Voltage Sensor (VH) Stuck On

  HINT: 

  • P0C76-00 may be output as a result of the malfunction indicated by the DTCs above.
    1. The chart above is listed in inspection order of priority.
    2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

Post-procedure1

• Turn the ignition switch off.

Result: 

A 

REPLACE HYBRID MOTOR CONTROL INVERTER ASSEMBLY. Refer to  REMOVAL [09/2023 - ] 

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

Result: 

C 

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ]