- Hybrid/EV Battery Voltage
- VL-Voltage before Boosting
- VH-Voltage after Boosting
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001N3Y9 |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - 09/2022] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P1AC413; Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022] | ||
|
DTC |
P1AC413 |
Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open |
DTC SUMMARY
MALFUNCTION DESCRIPTION
Current interrupt devices (CIDs), which mechanically shut off the high-voltage circuit, are installed in each HV battery cell to protect the HV battery from overcharge (overvoltage).
The cause of this malfunction may be one of the following:
Battery ECU assembly internal malfunction
- Battery ECU assembly malfunction
DESCRIPTION
The hybrid vehicle control ECU detects a shut-off by a CID in a HV battery cell.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P1AC413 |
Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open |
The hybrid vehicle control ECU detects that a CID has operated in the HV battery. When the power switch is on (READY), the hybrid vehicle control ECU receives a signal indicating a drop in cell voltage from the battery ECU assembly due to the voltage before boosting being out of the normal range or the cumulative change in voltage before boosting is large for a certain amount of time. (1 trip detection logic) |
Battery ECU assembly |
Comes on |
Master Warning: Comes on |
Related Data List
|
DTC No. |
Data List |
|---|---|
|
P1AC413 |
|
MONITOR DESCRIPTION
A malfunction is detected and the MIL is illuminated when following condition is met:
- A large fluctuation in the DC/DC converter voltage occurs due to operation of the battery current interrupt device.
- A large fluctuation in the battery charger output voltage occurs due to operation of the battery current interrupt device.
MONITOR STRATEGY
|
Related DTCs |
P1AC4 (INF P1AC413): Hybrid/EV Battery Cell Voltage Low Pack1 or Stack "A" at CID interception |
|
Required sensors/components |
HV battery |
|
Frequency of operation |
- |
|
Duration |
TMC's intellectual property |
|
MIL operation |
1 driving cycle |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
|
The monitor will run whenever the following DTCs are not stored |
TMC's intellectual property |
|
Other conditions belong to TMC's intellectual property |
- |
TYPICAL MALFUNCTION THRESHOLDS
|
TMC's intellectual property |
- |
COMPONENT OPERATING RANGE
|
Hybrid vehicle control ECU |
P1AC4 (INF P1AC413) is not detected |
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 here
![2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): UTILITY](/t3Portal/stylegraphics/info.gif)
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
-
Turn the power switch on (READY) and wait for 3 minutes or more. [*1]
HINT:
- According to the display on the Techstream, read the Data List and monitor the values of "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" for 3 minutes. If the difference between "Hybrid/EV Battery Voltage" and "VL-Voltage before Boosting" is always less than 50 V, the vehicle has returned to normal.
-
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
-
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 or N/A, perform the normal judgment procedure again.
CAUTION / NOTICE / HINT
NOTICE:
Do not turn the power switch on (READY) before completing repairs as this may cause a malfunction.
PROCEDURE
|
1. |
CHECK DTC OUTPUT (HYBRID CONTROL, HV BATTERY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
NOTICE:
If the DTCs are cleared or the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal before performing repairs, turning the power switch on (READY) may cause a malfunction. Do not turn the power switch on (READY).
(c) Enter the following menus: Powertrain / Hybrid Control, HV Battery / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Powertrain > HV Battery > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
P1AC413 only is output, or DTCs except the ones in the table below are also output. |
A |
|
DTCs of hybrid battery system in the tables below are output. |
B |
|
Malfunction Content |
System |
Relevant DTC |
|
|---|---|---|---|
|
System malfunction |
Hybrid battery system |
P1AC413 |
Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open |
|
P1AC49E |
Hybrid/EV Battery Stack 1 Current Interrupt Device Stuck On |
||
|
P1AC513 |
Hybrid/EV Battery Stack 2 Current Interrupt Device Circuit Open |
||
|
P1AC59E |
Hybrid/EV Battery Stack 2 Current Interrupt Device Stuck On |
||
HINT:
-
P1AC413 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.)
(e) Turn the power switch off.
| B |
|
|
|
2. |
CHECK DTC OUTPUT (HYBRID CONTROL, MOTOR GENERATOR AND HV BATTERY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control, Motor Generator and HV Battery / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Powertrain > Motor Generator > Trouble Codes
Powertrain > HV Battery > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
P1AC413 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 |
|
DTCs of hybrid battery system in the tables below are output. |
D |
|
Malfunction Content |
System |
Relevant DTC |
|
|---|---|---|---|
|
Microcomputer malfunction |
Hybrid control system |
P060647 |
Hybrid/EV Powertrain Control Module Processor Watchdog / Safety MCU Failure |
|
P0A1B49 |
Drive Motor "A" Control Module Internal Electronic Failure |
||
|
Motor generator control system |
P0A1A47 |
Generator Control Module Watchdog / Safety MC Failure |
|
|
P0A1A49 |
Generator Control Module Internal Electronic Failure |
||
|
P0A1B1F |
Generator Control Module Circuit Intermittent |
||
|
P1C2A1C |
Generator A/D Converter Circuit Circuit Voltage Out of Range |
||
|
P1C2A49 |
Generator A/D Converter Circuit Internal Electronic Failure |
||
|
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 |
||
|
Hybrid battery system |
P060A47 |
Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure |
|
|
P060B16 |
Hybrid/EV Battery Energy Control Module A/D Processing Circuit Voltage Below Threshold |
||
|
P060B49 |
Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure |
||
|
Power source circuit malfunction |
Motor generator control system |
P06D61C |
Generator Control Module Offset Power Circuit Voltage Out of Range |
|
Hybrid battery system |
P1CBB12 |
Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery |
|
|
P1CBB14 |
Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open |
||
|
Communication system malfunction |
Hybrid control system |
P312387 |
Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message |
|
U011187 |
Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message |
||
|
Motor generator control system |
P313387 |
Communication Error from Generator to Drive Motor "A" Missing Message |
|
|
Hybrid battery system |
P060687 |
Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message |
|
|
P060A87 |
Hybrid/EV Battery Energy Control Module Processor from Monitoring Processor Missing Message |
||
|
Sensor and actuator circuit 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 |
||
|
Hybrid battery system |
P0ABF11 |
Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground |
|
|
P0ABF15 |
Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open |
||
|
P0ABF28 |
Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure |
||
|
P0ABF2A |
Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range |
||
|
P0B0E11 |
Hybrid/EV Battery Current Sensor "B" Circuit Short to Ground |
||
|
P0B0E15 |
Hybrid/EV Battery Current Sensor "B" Circuit Short to Auxiliary Battery or Open |
||
|
P0B1362 |
Hybrid/EV Battery Current Sensor "A"/"B" Signal Compare Failure |
||
|
System malfunction |
Hybrid control system |
P0A1F94 |
Hybrid/EV Battery Energy Control Module Unexpected Operation |
|
P0ABF00 |
Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance |
||
|
P0D2D1C |
Drive Motor "A" Inverter Voltage Sensor Voltage Out of Range |
||
|
P0D4C1C |
Hybrid/EV Battery Charger Hybrid/EV Battery Input Voltage Sensor Voltage Out of Range |
||
|
P0E311C |
Boosting Converter Voltage Sensor "A" Voltage Out of Range |
||
|
P1C2D62 |
Hybrid/EV Battery "A" Voltage Sensor/Boosting Converter Voltage Sensor "A" Signal Compare Failure |
||
|
P1C8349 |
High Voltage Power Resource Circuit Voltage Sensor after Boosting Malfunction |
||
|
Motor generator control system |
P0CA300 |
DC/DC Converter Step Up Voltage Performance |
|
|
P1CB69E |
Drive Motor "A" Inverter Voltage Sensor(VH) Stuck On |
||
HINT:
-
P1AC413 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.)
(e) Turn the power switch off.
| B |
|
| C |
|
| D |
|
|
|
3. |
REPLACE BATTERY ECU ASSEMBLY |
Click here
|
|
4. |
SIMULATION TEST |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG) and turn the Techstream on.
NOTICE:
Do not turn the power switch on (READY) before completing repairs as this may cause a malfunction.
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Clear the DTCs and freeze frame data.
Powertrain > Hybrid Control > Clear DTCs
(e) Turn the power switch off and wait for 2 minutes or more.
(f) Turn the power switch on (IG) and wait for 30 seconds or more.
(g) Enter the following menus: Powertrain / Hybrid Control, HV Battery / Trouble Codes.
(h) Check if DTCs are output.
Powertrain > Hybrid Control > Trouble Codes
Powertrain > HV Battery > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
No DTCs are output. |
A |
|
DTCs of hybrid battery system are output. |
B |
(i) Turn the power switch off.
| A |
|
END |
| B |
|
|
|