DTC C123D-00: IG2 Malfunction [11/2021 - 10/2023]: Description

Refer to DTC C110E-14.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
C123D-00	IG2 Malfunction	When communication with the hybrid vehicle control ECU assembly is normal or the vehicle speed is 10 km/h (6 mph) or more, and the IG1 terminal voltage is 10.2 V or more, the IG2 terminal voltage is less than 2.8 V for 4 seconds or more.	Open or short in IG2 circuit Improperly connected connector, deformation or corrosion of terminals No. 1 skid control ECU (brake booster with master cylinder assembly)	Comes on	SAE Code: C123E (Case 1) Output ECU: Both skid control ECUs

C123D-00 DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	When communication with the hybrid vehicle control ECU assembly is normal	◦	-
Diagnosis Condition	The vehicle speed is 10 km/h (6 mph) or more	-	◦
Malfunction Status	The IG1 terminal voltage is 10.2 V or more, the IG2 terminal voltage is less than 2.8 V	◦	◦
Detection Time		4 seconds or more.	4 seconds or more.
Number of Trips		1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.