PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster): C060B12; Left Electric Parking Brake Actuator Control Circuit Short to Battery; 2022 - 2024 MY RAV4 RAV4 HV [12/2021

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM10000000218QN
Model Year Start: 2022	Model: RAV4	Prod Date Range: [12/2021 - ]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster): C060B12; Left Electric Parking Brake Actuator Control Circuit Short to Battery; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]

DTC

C060B12

Left Electric Parking Brake Actuator Control Circuit Short to Battery

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
C060B12	Left Electric Parking Brake Actuator Control Circuit Short to Battery	Diagnosis Condition: Electric parking brake not operating Malfunction Status: The ECU power supply is normal but there is a malfunction in the electric parking brake actuator LH internal circuit (short to +B). Detection Time: Approximately 1 second	Parking brake actuator assembly LH No. 2 parking brake wire assembly Wire harness or connector No. 2 skid control ECU (brake actuator assembly)	DTC stored	An electric parking brake system malfunction is displayed on the multi-information display.

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NOTICE:

To ensure that the electric parking brake does not operate, wait for 3 minutes or more with the ignition switch off, the driver door closed, and the brake pedal not depressed, then disconnect each connector, fuse and relay.
After replacing the No. 2 skid control ECU (brake actuator assembly), perform "Calibration".
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When replacing the No. 2 skid control ECU (brake actuator assembly), operate the electric parking brake switch (integration control and panel assembly) as the parking brake indicator light blinks when the ignition switch is first turned ON.

1.	CHECK FOR SHORT TO +B

(a) Turn the ignition switch off.

(b) Make sure the No. 2 parking brake wire assembly is securely installed.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
N57-2 (+) - N57-1 (-)	Electric parking brake not operating	Below 1 V

*a	Front view of No. 2 Parking Brake Wire Assembly (to Parking Brake Actuator Assembly LH)

2.	CHECK FOR SHORT TO +B

(a) Disconnect the NN12 No. 2 parking brake wire assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
NN12-1 - NN12-2	Electric parking brake not operating	Below 1 V

*a	Front view of wire harness connector (to No. 2 Parking Brake Wire Assembly)

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY

3.	CHECK FOR SHORT TO +B

(a) Disconnect the NN12 No. 2 parking brake wire assembly connector.

(b) Disconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.

*a	Front view of wire harness connector	*b	(to No. 2 Skid Control ECU (Brake Actuator Assembly))
*c	(to No. 2 Parking Brake Wire Assembly)	-	-

Standard Voltage:

Tester Connection	Condition	Specified Condition
NN12-1 or A105-3 (MRL+) - Body ground	Always	Below 1 V
NN12-2 or A105-2 (MRL-) - Body ground	Always	Below 1 V

REPLACE NO. 2 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR