Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026PY4 |
Model Year Start: 2023 |
Model: Corolla HV |
Prod Date Range: [09/2022 -
] |
Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P1CB59E; DC/DC Converter Voltage Sensor "A"(VL) Stuck On; 2023 - 2025 MY Corolla HV [09/2022 - ] |
DTC
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P1CB59E
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DC/DC Converter Voltage Sensor "A"(VL) Stuck On
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DTC SUMMARY
MALFUNCTION DESCRIPTION
If an overvoltage malfunction occurs in the boost converter, the motor generator control ECU (MG ECU) detects the malfunction and stores this DTC. The cause of this malfunction may be one of the following:
Internal inverter malfunction
-
Inverter with converter assembly internal circuit malfunction
-
Malfunction in ECU that controls the inverter
DESCRIPTION
For a description of the boost converter.
Click here
DTC No.
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Detection Item
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DTC Detection Condition
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Trouble Area
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MIL
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Warning Indicate
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Note
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P1CB59E
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DC/DC Converter Voltage Sensor "A"(VL) Stuck On
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Boost converter overvoltage signal detected (circuit malfunction):
A circuit malfunction is detected before boosting.
(1 trip detection logic)
|
-
Wire harness or connector
-
Inverter with converter assembly
|
Comes on
|
Master Warning:
Comes on
|
SAE Code:
P0A94
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MONITOR DESCRIPTION
If the boost converter detects a circuit malfunction, it will transmit a boost converter overvoltage signal to the motor generator control ECU. Upon receiving this signal, the motor generator control ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
Related DTCs
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P0A94 (INF P1CB59E): OVL detection (Circuit malfunction)
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Required sensors/components
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Boost converter
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Frequency of operation
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Continuous
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Duration
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TMC's intellectual property
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MIL operation
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1 driving cycle
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Sequence of operation
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None
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TYPICAL ENABLING CONDITIONS
The monitor will run whenever the following DTCs are not stored
|
TMC's intellectual property
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Other conditions belong to TMC's intellectual property
|
-
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TYPICAL MALFUNCTION THRESHOLDS
TMC's intellectual property
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-
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COMPONENT OPERATING RANGE
Motor generator control ECU
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DTC P0A94 (INF P1CB59E) 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
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
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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 wait for 5 seconds or more. [*1]
-
Turn the ignition switch to ON (READY) and wait for 5 seconds or more. [*2]
HINT:
[*1] to [*2]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
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Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
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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.
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If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.
CAUTION / NOTICE / HINT
CAUTION:
Refer to the precautions before inspecting high voltage circuit.
Click here
PROCEDURE
1.
|
CHECK DTC OUTPUT (HYBRID CONTROL)
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(a) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Result
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Proceed to
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P06881F is not output.
|
A
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P06881F is also output.
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B
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(b) Turn the ignition switch off.
A
|
|
|
2.
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CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)
|
Click here
Result
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Proceed to
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OK
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A
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NG (The connector is not connected securely.)
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B
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NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.)
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C
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B |
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CONNECT SECURELY
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C |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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|