DTC C2A01: ECU Internal Power Source Circuit [09/2014 - 01/2023]: Description

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This DTC is stored when the torque vectoring differential ECU assembly detects an abnormal voltage in its ECU internal power source for more than a certain period of time.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate
C2A01	ECU Internal Power Source Circuit	Diagnosis Condition (1): Engine switch on (IG) Diagnosis Condition (2): IG power source voltage is 10 V or more or PIG power source voltage is 10 V or more. Abnormal condition (1): PIG power source voltage is below 16 V and IG power source voltage is 18.5 V or more. Abnormal condition (2): ECU internal power source malfunction Malfunction Time (1): 3 seconds or more Malfunction Time (2): 2 seconds or more Trip logic: 1 trip detection logic	Torque vectoring differential ECU assembly	Master Warning Light: Comes on* Multi-information Display Error Message: Comes on*

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

C2A01

ECU Internal Power Source Circuit

Diagnosis Condition (1):

Engine switch on (IG)

Diagnosis Condition (2):

IG power source voltage is 10 V or more or PIG power source voltage is 10 V or more.

Abnormal condition (1):

PIG power source voltage is below 16 V and IG power source voltage is 18.5 V or more.

Abnormal condition (2):

ECU internal power source malfunction

Malfunction Time (1):

3 seconds or more

Malfunction Time (2):

2 seconds or more

Trip logic:

1 trip detection logic

Torque vectoring differential ECU assembly

Master Warning Light: Comes on*
Multi-information Display Error Message: Comes on*

*: Under abnormal condition (1), the warning light will not illuminate and no error message will be displayed on the multi-information display.