RM36D0EC _51 Engine / Hybrid System _083048 HYBRID / BATTERY CONTROL _0709511 HYBRID CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P0C7600  Hybrid/EV Battery System Discharge Time Too Long  


DTC SUMMARY

MALFUNCTION DESCRIPTION


When the power switch is turned from on (READY) to off, the hybrid vehicle control ECU assembly detects that the high-voltage capacitor inside the inverter with converter assembly is not discharged.

The cause of this malfunction may be one of the following:

Inverter voltage sensor (VH) internal circuit malfunction
·

Voltage sensor (VH) malfunction

·

Motor generator control ECU (MG ECU) malfunction

·

Communication (wire harness) malfunction


High voltage system malfunction

Inverter with converter assembly malfunction


Shutdown signal circuit malfunction
·

Hybrid vehicle control ECU assembly malfunction

·

Wire harness malfunction

·

Inverter with converter assembly malfunction



DESCRIPTION

For a description of the inverter.

for 2WD: Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM (for 2WD with LITHIUM-ION BATTERY [Production date from 2021/08])>P0D2D16

for AWD: Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM (for AWD with LITHIUM-ION BATTERY)>P0D2D16

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P0C7600 Hybrid/EV Battery System Discharge Time Too Long The inverter voltage (VH) does not drop during discharge.
(Discharge: Offsetting of the residual pressure in the high-voltage side after power switch is turned off)
(1 trip detection logic)
·

Inverter with converter assembly

·

Wire harness or connector

·

Hybrid vehicle control ECU assembly


Does not come on Master Warning:
Comes on 		SAE Code:
P0C76

HINT:

When the power switch is turned from on (READY) to off, the MG ECU discharges voltage stored in the inverter by allowing current to flow to motor (MG2) without generating torque. When the vehicle is normal, VH voltage becomes approximately 0 V after discharging. If VH voltage exceeds a specified value, this DTC is stored.


A111758E07
3.615,1.542 3.729,1.438 false 3.906,2.073 4.354,1.854 false 2.031,0.698 2.208,0.854 0.177,0.156 10 IG 2.635,0.583 2.875,0.74 0.24,0.156 10 ON 3.063,0.802 3.365,0.958 0.302,0.156 10 OFF 2,1.333 2.219,1.49 0.219,0.156 10 VH 3.771,1.365 4.531,1.615 0.76,0.25 10 Abnormal 3.208,2.344 4.417,2.594 1.208,0.25 10 During Discharge 4.396,1.76 5,2 0.604,0.24 10 Normal

Related Data List
DTC No. Data List
P0C7600 VH-Voltage after Boosting

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>UTILITY


1.

Connect the GTS to the DLC3.

2.

Turn the power switch on (IG) and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the power switch off and wait for 2 minutes or more.

5.

Turn the power switch on (READY) and wait for 30 seconds or more.

6.

Turn the power switch off and wait for 2 minutes or more.

7.

Turn the power switch on (IG) and turn the GTS on.

8.

Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

9.

Check the DTC judgment result.

HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE, perform driving pattern again.




CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>PRECAUTION


PROCEDURE

1.CHECK DTC OUTPUT (HYBRID CONTROL, MOTOR GENERATOR)
a.

Connect the GTS to the DLC3.


b.

Turn the power switch on (IG).


c.

Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.


d.

Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes
50001 397
Powertrain > Motor Generator > Trouble Codes
50001 395
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 MC 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.

(a)

The chart above is listed in inspection order of priority.

(b)

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.)





e.

Turn the power switch off.



A

2.CHECK SHUT DOWN SIGNAL CIRCUIT

B

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


C

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM)

for 2WD:

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM (for 2WD with LITHIUM-ION BATTERY [Production date from 2021/08])>DIAGNOSTIC TROUBLE CODE CHART

for AWD:

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>MOTOR GENERATOR CONTROL SYSTEM (for AWD with LITHIUM-ION BATTERY)>DIAGNOSTIC TROUBLE CODE CHART