BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): C00409E,C00409F; Brake Pedal Switch "A" Stuck On; 2019 - 2024 MY RAV4 RAV4 HV [11/2018

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001EYYO
Model Year Start: 2019	Model: RAV4	Prod Date Range: [11/2018 - ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): C00409E,C00409F; Brake Pedal Switch "A" Stuck On; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]

DTC

C00409E

Brake Pedal Switch "A" Stuck On

DTC

C00409F

Brake Pedal Switch "A" Stuck Off

DESCRIPTION

The brake pedal load sensing switch turns on when the brake pedal is depressed with a force exceeding a predetermined level.

The skid control ECU uses this circuit to detect if the brake pedal is depressed or not.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C00409E	Brake Pedal Switch "A" Stuck On	Either of the following is detected: With the stop light switch off, the brake pedal load sensing switch on, and the master cylinder pressure less than 0.7 MPa (7.13 kgf/cm², 101 psi), the vehicle acceleration rate is more than -0.8 m/s²for 10 seconds or more. (Only when the engine is running and booster malfunctions are not detected.) Condition which the brake pedal load sensing switch remains on while the vehicle speed increases from 0 km/h (0 mph) to 30 km/h (19 mph) occurs 5 times in succession.	Brake pedal load sensing switch (Brake pedal support assembly) Brake pedal load sensing switch circuit
C00409F	Brake Pedal Switch "A" Stuck Off	Either of the following is detected: With the stop light switch on, the brake pedal load sensing switch off, and the master cylinder pressure more than 6 MPa (61.2 kgf/ cm², 870 psi), the vehicle acceleration rate is less than -4 m/s² for 1 second or more. With the stop light switch on, the brake pedal load sensing switch off, and the master cylinder pressure more than 6 MPa (61.2 kgf/ cm², 870 psi), the vehicle speed is 0 km/h (0 mph) for 5 seconds or more.	Brake pedal load sensing switch (Brake pedal support assembly) Brake pedal load sensing switch circuit

DTC Detection Conditions: C00409E

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	-	-	-
Malfunction Status	With the stop light switch off, the brake pedal load sensing switch on, and the master cylinder pressure less than 0.7 MPa (7.13 kgf/cm², 101 psi), the vehicle acceleration rate is more than -0.8 m/s². (Only when the engine is running and booster malfunctions are not detected.)	○	-
Malfunction Status	Condition which the brake pedal load sensing switch remains on while the vehicle speed increases from 0 km/h (0 mph) to 30 km/h (19 mph) occurs 5 times in succession.	-	○
Detection Time		10 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.

DTC Detection Conditions: C00409F

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	-	-	-
Malfunction Status	With the stop light switch on, the brake pedal load sensing switch off, and the master cylinder pressure more than 6 MPa (61.2 kgf/ cm², 870 psi), the vehicle acceleration rate is less than -4 m/s².	○	-
Malfunction Status	With the stop light switch on, the brake pedal load sensing switch off, and the master cylinder pressure more than 6 MPa (61.2 kgf/ cm², 870 psi), the vehicle speed is 0 km/h (0 mph).	-	○
Detection Time		1 second or more	5 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.

WIRING DIAGRAM

Refer to DTC C004013

Click here

CAUTION / NOTICE / HINT

HINT:

When P057111, P057112, and/or P057113 is output together with C00409E and/or C00409F, inspect and repair the trouble areas indicated by P057111, P057112, and/or P057113 first (Click here ), (Click here ), and/or (Click here )

PROCEDURE

1.	READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH ASSEMBLY AND BRAKE PEDAL LOAD SENSING SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

Click here

Chassis > Brake/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop Light SW

Stop light switch assembly (STP terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

HINT:

The brake pedal state is determined using the voltage at terminal STP

Brake Pedal Load Sensing SW

Brake pedal load sensing switch (brake pedal support assembly)

OFF / ON

OFF: Brake pedal load sensing switch (brake pedal support assembly) OFF

ON: Brake pedal load sensing switch (brake pedal support assembly) ON

Chassis > Brake/EPB > Data List

Tester Display
Stop Light SW
Brake Pedal Load Sensing SW

(d) Check that the stop light switch display and brake pedal load sensing switch display observed on the Techstream change according to brake pedal operation.

OK:

The Techstream displays ON or OFF according to brake pedal operation.

(e) Slowly depress the brake pedal, and check when the stop light switch and brake pedal load sensing switch turn on.

OK:

First the stop light switch turns on, and then the brake pedal load sensing switch turns on.

Result	Proceed to
OK	A
NG (Turning on of the brake pedal load sensing switch is not confirmed.)	B
NG (The brake pedal load sensing switch turns on first.)	C

GO TO STEP 4

GO TO STEP 6

CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

Chassis > Brake/EPB > Clear DTCs

(d) Press the DTC clear button.

3.	RECONFIRM DTC

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.

(d) Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.

Chassis > Brake/EPB > Trouble Codes

(e) Check if the same DTC is output.

Result	Proceed to
C00409E and C00409F is not output	A
C00409E and/or C00409F is output	B

END

REPLACE BRAKE ACTUATOR ASSEMBLY

4.	INSPECT BRAKE PEDAL LOAD SENSING SWITCH

(a) Inspect the brake pedal load sensing switch (brake pedal support assembly).

Click here

OK:

The brake pedal load sensing switch (brake pedal support assembly) is normal.

REPLACE BRAKE PEDAL SUPPORT ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - BRAKE PEDAL LOAD SENSING SWITCH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A39-10 (HZRI) - A43-2 (FSW+)	Always	Below 1 Ω
A39-10 (HZRI) - Body ground	Always	10 kΩ or higher
A43-2 (FSW+) - Body ground	Always	10 kΩ or higher
A43-1 (FSW-) - Body ground	Always	Below 1 Ω

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK BRAKE PEDAL AND STOP LIGHT SWITCH ASSEMBLY INSTALLATION

(a) Turn the ignition switch off.

(b) Check the brake pedal height.

Click here

OK:

The brake pedal height and stop light switch assembly installation are normal.

REPLACE BRAKE PEDAL SUPPORT ASSEMBLY

ADJUST BRAKE PEDAL OR STOP LIGHT SWITCH ASSEMBLY