| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM10000000214R8 |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): P057112; Brake Switch "A" Circuit Short to Battery; 2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
P057112 |
Brake Switch "A" Circuit Short to Battery |
DESCRIPTION
The No. 2 skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied.
DTCs may be stored if either of the following occurs:
- Stop light switch assembly stuck on malfunction.
- The accelerator and brake pedals are depressed simultaneously.*
HINT:
*: The No. 2 skid control ECU (brake actuator assembly) may store this DTC upon judging that a stuck on malfunction has occurred when the accelerator pedal and brake pedal are depressed simultaneously. However, this does not indicate a malfunction.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
P057112 |
Brake Switch "A" Circuit Short to Battery |
When the stop light switch assembly is continuously stuck on, the vehicle decelerates from 30 km/h (19 mph) or more to 3 km/h (2 mph) or less 10 times or more. |
|
Does not come on |
Output ECU: No. 2 skid control ECU (brake actuator assembly) |
WIRING DIAGRAM
Refer to DTC C13807E.
Click here
![2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C13807E; Stop Lamp Relay Actuator Stuck On](/t3Portal/stylegraphics/info.gif)
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
After replacing the No. 2 skid control ECU (brake actuator assembly), perform "Calibration" after performing "Reset Memory".
Click here
PROCEDURE
|
1. |
CHECK BRAKE PEDAL HEIGHT AND STOP LIGHT SWITCH ASSEMBLY INSTALLATION |
Click here
| NG |
|
|
|
2. |
CHECK BRAKE ACTUATOR ASSEMBLY |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. |
|
(b) Disconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A40-1 (OUT) - Body ground |
Brake pedal released |
Below 1.5 V |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|
3. |
CHECK STOP LIGHT SWITCH ASSEMBLY |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector. OK: The connector is securely connected. |
|
(b) Disconnect the A40 stop light switch assembly connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A40-1 (OUT) - Body ground |
Always |
Below 1.5 V |
| OK |
|
|
|
4. |
CHECK FOR SHORT TO +B IN STP CIRCUIT |
(a) Check that there is no short to +B in the STP circuit (wire harnesses, connectors, ECUs and stop lights).
OK:
No short to +B.
| OK |
|
| NG |
|
REPAIR OR REPLACE MALFUNCTIONING PART |
|
|