Dtc C1430 Brake Pedal Load Sensing Switch Off Stuck Malfunction
Brake. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH/BRAKE PEDAL LOAD SENSING SWITCH)
RECONFIRM DTC
INSPECT BRAKE PEDAL LOAD SENSING SWITCH
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE PEDAL LOAD SENSING SWITCH)
CHECK BRAKE PEDAL AND STOP LIGHT SWITCH INSTALLATION
DTC C1430 Brake Pedal Load Sensing Switch OFF Stuck Malfunction |
DTC C1431 Brake Pedal Load Sensing Switch ON Stuck Malfunction |
DESCRIPTION
The brake pedal load sensing switch operates when the brake pedal is depressed with force exceeding a predetermined level.The skid control ECU detects if the brake pedal is depressed or not via this circuit.DTC Code
| DTC Detection Condition
| Trouble Area
|
C1430
| Either of the following is detected:
- With the stop light switch on, the brake pedal load sensing switch off and the master cylinder pressure 6 MPa or more, the deceleration is 0.4 G or more for 1 second or more.
- With the stop light switch on, the brake pedal load sensing switch off and the master cylinder pressure 6 MPa or more, the vehicle speed is 0 km/h (0 mph) for 5 seconds or more.
| - Brake pedal load sensing switch
- Brake pedal load sensing switch circuit
|
C1431
| Either of the following is detected:
- Immediately after the ignition switch is turned to ON, the brake pedal load sensing switch is on and the stop light switch is off for 10 seconds or more.
- The condition that the brake pedal load sensing switch remains on while the vehicle speed increases from 0 km/h (0 mph) to 30 km/h (18 mph) occurs 5 times in succession.
| - Brake pedal load sensing switch
- Brake pedal load sensing switch circuit
|
WIRING DIAGRAM
Refer to DTC C1429 (RAV4_ACA30 RM000000XIR026X_02.html).
INSPECTION PROCEDURE
- NOTICE:
- When replacing the brake actuator assembly, perform zero point calibration (RAV4_ACA30 RM000001K1O00SX.html).
- HINT:
- When C1425 is output together with C1430 and/or C1431, inspect and repair the trouble areas indicated by C1425 first (RAV4_ACA30 RM000000XIE04TX.html).
| 1.READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH/BRAKE PEDAL LOAD SENSING SWITCH) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Select the Data List mode on the intelligent tester (RAV4_ACA30 RM000000ONK01EX.html).
ABS/VSC/TRC:Tester Display
| Measurement Item/Range
| Normal Condition
| Diagnostic Note
|
Stop Light SW
| Stop light switch / ON or OFF
| ON: Brake pedal depressed
OFF: Brake pedal released
| -
|
Brake Pedal Load Sensing SW
| Brake pedal load sensing switch / ON or OFF
| ON: Brake pedal depressed beyond the specified point
OFF: Brake pedal not depressed beyond the specified point
| -
|
Check that the stop light switch display and brake pedal load sensing switch display observed on the intelligent tester change according to brake pedal operation.
- OK:
- The intelligent tester displays ON or OFF according to brake pedal operation.
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 should turn ON, and then the brake pedal load sensing switch should turn ON.
- Result:
Result
| Proceed to
|
OK
| A
|
NG
| Turning on of the brake pedal load sensing switch is not confirmed.
| B
|
The brake pedal load sensing switch turns on first.
| C
|
Turn the ignition switch off.
Clear the DTCs (RAV4_ACA30 RM000000ONJ027X.html).
Start the engine.
Perform the road and braking test.
Check if the same DTC is output (RAV4_ACA30 RM000000ONJ027X.html).
- Result:
Result
| Proceed to
|
DTCs (C1430 and C1431) are not output.
| A
|
DTCs (C1430 and/or C1431) are output.
| B
|
| 3.INSPECT BRAKE PEDAL LOAD SENSING SWITCH |
- NOTICE:
- Do not remove the brake pedal load sensing switch from the brake pedal support assembly.
- When there is a malfunction in the brake pedal load sensing switch, replace the brake pedal support assembly.
Turn the ignition switch off.
Make sure that there is no looseness in the locking part and connecting part of the connector.
Disconnect the brake pedal load sensing switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Switch Condition
| Specified Condition
|
1 - 2
| Brake pedal load sensing switch off
(Brake pedal depressed)
| 0.9 to 1.1 kΩ
|
Brake pedal load sensing switch on
(Brake pedal released)
| 192 to 234 Ω
|
| 4.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE PEDAL LOAD SENSING SWITCH) |
Make sure that there is no looseness in the locking part and connecting part of the connector.
Disconnect the skid control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
A67-27 (FSW+) - A3-2
| Always
| Below 1 Ω
|
A67-27 (FSW+) - Body ground
| Always
| 10 kΩ or higher
|
A3-1 - Body ground
| Always
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 5.CHECK BRAKE PEDAL AND STOP LIGHT SWITCH INSTALLATION |
Turn the ignition switch off.
Check the brake pedal height and stop light switch installation (RAV4_ACA30 RM000001HJ300JX.html).
- OK:
- The brake pedal height and stop light switch installation are normal.
