| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026PZB |
| Model Year Start: 2023 | Model: Corolla HV | Prod Date Range: [09/2022 - ] |
| Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with PA10): P1AFD1C; Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range; 2023 - 2025 MY Corolla HV [09/2022 - ] | ||
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DTC |
P1AFD1C |
Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range |
DESCRIPTION
The battery ECU assembly monitors the HV battery voltage. If the battery ECU assembly detects a malfunction of its internal voltage detection circuits, it will store this DTC.
HINT:
If this DTC is output, it will be necessary to replace the battery ECU assembly.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
Note |
|---|---|---|---|---|---|---|
|
P1AFD1C |
Flying Capacitor/Internal Control Module Hybrid/EV Battery Monitor Voltage Out of Range |
Both of the following conditions are met: The battery ECU assembly detects a malfunction of its internal voltage detection circuits. The difference between the total voltage of all battery cells and the stack voltage is large. (1 trip detection logic) |
Battery ECU assembly |
Comes on |
Master Warning: Comes on |
SAE Code: P1AFD |
MONITOR DESCRIPTION
If the battery ECU assembly detects a malfunction in its internal voltage detection circuits, it will illuminate the MIL and store a DTC.
MONITOR STRATEGY
|
Related DTCs |
P1AFD (INF P1AFD1C): Battery Voltage Sensor Circuit Range/Performance |
|
Required sensors/components |
Battery ECU assembly |
|
Frequency of operation |
Continuous |
|
Duration |
TMC's intellectual property |
|
MIL operation |
Immediately |
|
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
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TMC's intellectual property |
- |
COMPONENT OPERATING RANGE
|
Battery ECU assembly |
DTC P1AFD (INF P1AFD1C) 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.
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![2023 - 2025 MY Corolla HV [09/2022 - ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with PA10): UTILITY](/t3Portal/stylegraphics/info.gif)
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When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the GTS on.
-
With ignition switch ON and wait for 10 seconds or more.[*1]
HINT:
[*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 / HV Battery / 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, perform the normal judgment procedure again.
PROCEDURE
|
1. |
REPLACE BATTERY ECU ASSEMBLY |
Click here
| NEXT |
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END |
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