Toyota Yaris: Active Torque Split Awd System / Linear Solenoid Power Supply System Circuit Voltage Out of Range (C120C1C)

Toyota Yaris XP210 (2020-2023) Reapir and Service Manual / Drivetrain / Gf1a (transfer / 4wd / Awd) / Active Torque Split Awd System / Linear Solenoid Power Supply System Circuit Voltage Out of Range (C120C1C)

DESCRIPTION

When a malfunction has occurred in the linear solenoid power source system, the AWD ECU assembly stores DTC C120C1C.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory
C120C1C	Linear Solenoid Power Supply System Circuit Voltage Out of Range	When the IG1 terminal voltage is 9.5 V or more and less than 17.0 V, the BSLC terminal voltage is less than 9.5 V for 1 second.	Wire harness or connector AWD ECU assembly	Displayed	Yes

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.
When the AWD ECU assembly is replaced, before removing the AWD ECU assembly, it is necessary to perform ECU Data Save to save the original AWD ECU assembly information.
Click here
After performing repairs, clear the DTCs and check that the DTCs are not output again.
Click here

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (BSLC TERMINAL)

(a) Turn the ignition switch off.

(b) Disconnect the O119 AWD ECU assembly connector.

Standard Voltage:

Tester Connection	Condition	Specified Condition
O119-2 (BSLC) - Body ground	Always	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (GND TERMINAL)

(a) Turn the ignition switch off.

(b) Disconnect the O119 AWD ECU assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
O119-1 (GND) - Body ground	Always	Below 1 Ω

REPLACE AWD ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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