Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026PZW |
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): P31B400; Extreme Hybrid/EV Battery Charging Current; 2023 - 2025 MY Corolla HV [09/2022 - ] |
DTC
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P31B400
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Extreme Hybrid/EV Battery Charging Current
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DESCRIPTION
The battery ECU assembly monitors its internal operation, it will set DTCs and perform fail-safe control when it detects the following malfunction.
DTC No.
|
Detection Item
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DTC Detection Condition
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Trouble Area
|
MIL
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Warning Indicate
|
Note
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P31B400
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Extreme Hybrid/EV Battery Charging Current
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An abnormal signal is detected by the battery ECU assembly (excessive charging current).
(1 trip detection logic)
|
Hybrid vehicle control ECU
|
Does not come on
|
Master Warning:
Comes on
|
SAE Code: P31B4
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CONFIRMATION DRIVING PATTERN
HINT:
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON and turn the GTS on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
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Turn the ignition switch off and wait for 2 minutes or more.
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Turn the ignition switch to ON and turn the GTS on.
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Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Accelerator Position", "Hybrid/EV Battery Temperature 1 to 6" and "Hybrid/EV Battery Current".
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Enter the following menus: Powertrain / HV battery / Utility / All Readiness.
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Check the DTC judgment result.
HINT:
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If the judgment result shows NORMAL, the system is normal.
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If the judgment result shows ABNORMAL, the system has a malfunction.
-
If the judgment result shows INCOMPLETE, perform driving pattern again.
PROCEDURE
1.
|
CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)
|
(a) Check for DTCs.
Powertrain > HV Battery > Trouble Codes
Powertrain > Hybrid Control > Trouble Codes
Result
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Proceed to
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"P31B400" only is output.
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A
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DTCs except "P31B400" of hybrid battery system are output.
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B
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DTCs except "P31B400" of hybrid control system are output.
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C
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(b) Turn the ignition switch off.
B |
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GO TO DTC CHART (HYBRID BATTERY SYSTEM)
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