| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM10000000214PK |
| 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): C05732A; Brake Pressure Sensor "C" Signal Stuck In Range; 2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
C05732A |
Brake Pressure Sensor "C" Signal Stuck In Range |
DESCRIPTION
The accumulator pressure sensor is built into the brake booster with master cylinder assembly and detects the accumulator pressure.
If the No. 1 skid control ECU (brake booster with master cylinder assembly) detects that the accumulator pressure sensor value is below the threshold, operation of the motor relay is requested and the pump motor built into the brake booster with accumulator pump assembly operates.
HINT:
Brake pressure sensor "C": Accumulator pressure sensor
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
C05732A |
Brake Pressure Sensor "C" Signal Stuck In Range |
When the pump motor is operating, the accumulator pressure sensor signal does not change for 14 seconds or more. |
No. 1 skid control ECU (brake booster with master cylinder assembly) |
Comes on |
|
MONITOR DESCRIPTION
When the volume of brake fluid within the accumulator is below a certain amount, the No. 1 skid control ECU (brake booster with master cylinder assembly) operates the pump motor. When the pump motor is being operated and the output value of the accumulator pressure sensor does not change substantially for a certain period of time, the No. 2 skid control ECU (brake actuator assembly) judges that the accumulator pressure sensor has a stuck malfunction and illuminates the MIL and stores this DTC.
MONITOR STRATEGY
|
Related DTCs |
C0574: Brake booster motor pressure sensor stuck |
|
Required Sensors/Components(Main) |
Brake actuator (brake booster with master cylinder assembly) Brake booster with accumulator pump assembly |
|
Required Sensors/Components(Related) |
No. 2 skid control ECU (brake actuator assembly) Brake actuator (brake booster with master cylinder assembly) Brake booster with accumulator pump assembly |
|
Frequency of Operation |
Continuous |
|
Duration |
7 to 14 seconds (Time depends on auxiliary battery voltage) |
|
MIL Operation |
Immediately |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
|
Monitor runs whenever the following DTCs are not stored |
C0573 (Case 1): Accumulator pressure sensor lost communication C0573 (Case 2): Accumulator pressure sensor internal malfunction C0573 (Case 3): Accumulator pressure sensor invalid data C05A1 (Case 1): Servo pressure sensor lost communication C05A1 (Case 2): Servo pressure sensor internal malfunction C05A1 (Case 3): Servo pressure sensor invalid data C05A2: Servo pressure sensor exceeded learning limit C110F: Brake system voltage circuit low C140F: Brake booster motor circuit open C141C (Case 1): Brake booster motor relay output shorted high C141C (Case 2): Brake booster motor freewheeling MOS output shorted high C141C (Case 3 to 10): Brake booster motor gate voltage output functional C141D: Brake booster motor open circuit C141E: Brake booster motor circuit high C1498: Servo pressure sensor voltage circuit low C1499: Servo pressure sensor voltage circuit high C149E: Accumulator pressure sensor voltage circuit low C149F: Accumulator pressure sensor voltage circuit high C14C4: Servo pressure sensor intermittent/erratic C14CA: Brake system voltage open circuit C14D3: Accumulator pressure sensor intermittent/erratic |
|
All of the following conditions are met |
- |
|
Brake booster pressure sensor fail |
Not detected |
|
Brake booster motor control circuit fail |
Not detected |
|
ABS/TRAC/VSC |
Off |
|
Brake booster pressure |
16.2 Mpa (165.2 kgf/cm2, 2349 psi) |
|
Brake booster motor request |
Off |
|
Hydraulic used by brake booster |
15 cc (0.9 cu.in.) or more |
|
Change of brake booster pressure |
Less than 0.12 MPa (1.2 kgf/cm2, 17 psi) |
|
Servo pressure sensor fail |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
|
Change of brake booster pressure while brake booster motor is intrusively operated |
Less than 0.12 MPa (1.2 kgf/cm2, 17 psi) |
COMPONENT OPERATING RANGE
|
All of the following conditions are met |
- |
|
Brake booster pressure sensor fail |
Not detected |
|
Brake booster pressure |
Less than 20.85 MPa (212.6 kgf/cm2, 3023 psi) |
|
Change of brake booster pressure |
0.12 MPa (1.2 kgf/cm2, 17 psi) or more |
CONFIRMATION DRIVING PATTERN
NOTICE:
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
HINT:
- After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off.
- Turn the ignition switch to ON (READY) and turn the GTS on.
-
Repeat the following step 3 times. [*1]
- Fully depress the brake pedal for 2 seconds, release it and wait 1 second.
-
Wait 14 seconds. [*2]
HINT:
[*1] to [*2]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Chassis / Brake/EPB / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
CAUTION / NOTICE / HINT
NOTICE:
After replacing the No. 1 skid control ECU (brake booster with master cylinder assembly), perform "Calibration" after performing "Reset Memory".
Click here
![2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK DTC |
(a) Turn the ignition switch to ON.
(b) Depress the brake pedal 10 times or more to operate the pump motor.
(c) After the pump motor stops, check for DTCs.
Chassis > Brake Booster > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C05732A is not output. |
A |
|
DTC C05732A is output. |
B |
| A |
|
| B |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
|
|