DTC P0C76-00: Hybrid/EV Battery System Discharge Time Too Long [10/2018 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC OUTPUT (HYBRID CONTROL, MOTOR GENERATOR)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.
- Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Powertrain > Motor Generator > Trouble Codes
Result
Result Proceed to P0C7600 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 P060647 Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure P060687 Hybrid/EV Powertrain Control Module Processor to Monitoring Processor Missing Message P060A47 Hybrid/EV Powertrain Control Module Monitoring Processor Watchdog / Safety MCU Failure P060A87 Hybrid/EV Powertrain Control Module Processor from Monitoring Processor Missing Message P0A1B49 Drive Motor "A" Control Module Internal Electronic Failure P1C9E9F Hybrid/EV System Reset Stuck Off Motor generator control system P0A1B1F Generator Control Module Circuit Intermittent P0A1A47 Generator Control Module Watchdog / Safety μC Failure P0A1A49 Generator Control Module Internal Electronic Failure P1C2A1C Generator A/D Converter Circuit Circuit Voltage Out of Range P1C2A49 Generator A/D Converter Circuit Internal Electronic Failure P1C2B1C Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range P1C2B49 Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure P1CAC49 Generator Position Sensor Internal Electronic Failure P1CAD49 Drive Motor "A" Position Sensor Internal Electronic Failure P1CAF38 Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect P1CB038 Drive Motor "A" Position Sensor REF Signal Frequency Incorrect P313383 Communication Error from Generator to Drive Motor "A" Value of Signal Protection Calculation Incorrect P313386 Communication Error from Generator to Drive Motor "A" Signal Invalid P313387 Communication Error from Generator to Drive Motor "A" Missing Message Power source circuit malfunction Motor generator control system P06D61C Generator Control Module Offset Power Circuit Voltage Out of Range P06B01C Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range Communication system malfunction Hybrid control system P312387 Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message Sensor and actuator circuit malfunction Hybrid control system P0AD911 Hybrid/EV Battery Positive Contactor Circuit Short to Ground P0AD915 Hybrid/EV Battery Positive Contactor Circuit Short to Auxiliary Battery or Open P0ADD11 Hybrid/EV Battery Negative Contactor Circuit Short to Ground P0ADD15 Hybrid/EV Battery Negative Contactor Circuit Short to Auxiliary Battery or Open P0AE411 Hybrid/EV Battery Precharge Contactor Circuit Short to Ground P0AE415 Hybrid/EV Battery Precharge Contactor Circuit Short to Auxiliary Battery or Open Motor generator control system P0A3F16 Drive Motor "A" Position Sensor Circuit Voltage Below Threshold P0A4B16 Generator Position Sensor Circuit Voltage Below Threshold P0A4B21 Generator Position Sensor Signal Amplitude < Minimum P0A4B22 Generator Position Sensor Signal Amplitude > Maximum P0C5013 Drive Motor "A" Position Sensor Circuit "A" Circuit Open P0C5016 Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Below Threshold P0C5017 Drive Motor "A" Position Sensor Circuit "A" Circuit Voltage Above Threshold P0C5A13 Drive Motor "A" Position Sensor Circuit "B" Circuit Open P0C5A16 Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Below Threshold P0C5A17 Drive Motor "A" Position Sensor Circuit "B" Circuit Voltage Above Threshold P0C6413 Generator Position Sensor Circuit "A" Circuit Open P0C6416 Generator Position Sensor Circuit "A" Circuit Voltage Below Threshold P0C6417 Generator Position Sensor Circuit "A" Circuit Voltage Above Threshold P0C6913 Generator Position Sensor Circuit "B" Circuit Open P0C6916 Generator Position Sensor Circuit "B" Circuit Voltage Below Threshold P0C6917 Generator Position Sensor Circuit "B" Circuit Voltage Above Threshold System malfunction Hybrid control system P0D2D1C Drive Motor "A" Inverter Voltage Sensor Voltage Out of Range P1C8349 High Voltage Power Resource Circuit Voltage Sensor after Boosting Malfunction Motor generator control system P0D2D16 Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Below Threshold P0D2D17 Drive Motor "A" Inverter Voltage Sensor (VH) Circuit Voltage Above Threshold P1CB69E Drive Motor "A" Inverter Voltage Sensor (VH) Stuck On HINT:
- P0C7600 may be output as a result of the malfunction indicated by the DTCs above.
- The chart above is listed in inspection order of priority.
- 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.)
- P0C7600 may be output as a result of the malfunction indicated by the DTCs above.
- Turn the power switch off.
Result:
B
GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2018 - ]
Result:
C
GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2018 - ]
Result:
A
See step 2
- CHECK SHUT DOWN SIGNAL CIRCUIT
Refer to WIRING DIAGRAM
HINT:
If the "Shut Down Signal Circuit" inspection results are normal, perform the next step.
Result
Proceed to NEXT Result:
NEXT
REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to REMOVAL [10/2018 - 07/2022] Refer to REMOVAL [07/2022 - ]