- Brake booster with master cylinder assembly
- Brake pedal stroke sensor assembly
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000021IE7 |
| 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): Brake Pressure Sensor / Brake Pedal Position Sensor Signal Compare Failure (X21D2); 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
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Brake Pressure Sensor / Brake Pedal Position Sensor Signal Compare Failure (X21D2) |
DESCRIPTION
|
Code |
Tester Display |
Measurement Item |
Trouble Area |
Output ECU |
|---|---|---|---|---|
|
X21D2 |
Brake Pressure Sensor / Brake Pedal Position Sensor Signal Compare Failure |
History of mismatch between brake pedal stroke sensor assembly and reaction force pressure sensor |
|
No. 1 skid control ECU (brake booster with master cylinder assembly) |
PROCEDURE
|
1. |
CHECK DTC (HEALTH CHECK) |
(a) Perform the Health Check using the GTS.
|
Result |
Proceed to |
|---|---|
|
DTCs are not output. |
A |
|
DTCs are output. |
B |
| B |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
|
2. |
CUSTOMER PROBLEM ANALYSIS (CHECK CONDITION WHEN MALFUNCTION OCCURRED) AND FREEZE FRAME DATA |
(a) Interview the customer to check the vehicle conditions when the brake system warning light (red indicator) and brake system warning light (yellow indicator) illuminated.
(b) Using the GTS, check for Freeze Frame Data that is recorded when a X21D2 is stored.
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![2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): VEHICLE CONTROL HISTORY (RoB)](/t3Portal/stylegraphics/info.gif)
Chassis > Brake Booster > Utility
|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
HINT:
- Freeze Frame Data is only stored once when a X21D2 is stored.
- If other vehicle control history (RoB) are output, repair any malfunctions related to those vehicle control history (RoB) first, and then reproduce the conditions that caused X21D2 to be stored based on the interview with the customer.
|
|
3. |
READ VALUE USING GTS (BRAKE PEDAL STROKE SENSOR ASSEMBLY) |
(a) With the brake pedal released, confirm the brake pedal stroke sensor assembly output voltage.
Chassis > Brake Booster > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Stroke Sensor |
Brake pedal stroke sensor 1 |
Min.: 0.0 V Max.: 5.0 V |
Brake pedal released: 0.6 to 1.4 V |
Reading increases when brake pedal is depressed |
Chassis > Brake Booster > Data List
|
Tester Display |
|---|
|
Stroke Sensor |
OK:
0.6 to 1.4 V
| NG |
|
INSPECT/ADJUST INSTALLATION CONDITION OF BRAKE PEDAL STROKE SENSOR ASSEMBLY |
|
|
4. |
READ VALUE USING GTS (BRAKE PEDAL STROKE SENSOR ASSEMBLY) |
(a) Turn the ignition switch off.
(b) Mount a pedal effort gauge.
(c) Turn the ignition switch to ON (READY) and depress the brake pedal once.
HINT:
Depress the brake pedal after turning the ignition switch to ON (READY) to set the vehicle to linear mode (switching solenoid (SSA) on).
(d) Depress the brake pedal slowly and check the brake pedal stroke sensor assembly output voltages with respect to brake pedal depression force.
Chassis > Brake Booster > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Stroke Sensor |
Brake pedal stroke sensor 1 |
Min.: 0.0 V Max.: 5.0 V |
Brake pedal released: 0.6 to 1.4 V |
Reading increases when brake pedal is depressed |
Chassis > Brake Booster > Data List
|
Tester Display |
|---|
|
Stroke Sensor |
HINT:
Perform this procedure in linear mode (switching solenoid (SSA) on).
Standard Voltage:
|
Brake Effort [N (kgf, lbf)] |
Stroke Sensor [V] |
|---|---|
|
50 (5, 11.2) |
1.20 to 1.90 |
|
100 (10, 22.5) |
1.41 to 2.11 |
|
150 (15, 33.7) |
1.60 to 2.30 |
| NG |
|
REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY
|
|
|
5. |
READ VALUE USING GTS (REACTION FORCE PRESSURE) |
(a) Depress the brake pedal slowly and check the reaction force pressure sensor output values with respect to brake pedal depression force.
Chassis > Brake Booster > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Reaction Force Pressure |
Pressure value of stroke simulator |
Min.: 0.00 MPa Max.: 24.48 MPa |
Brake pedal released: 0.00 to 1.53 MPa |
Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal |
Chassis > Brake Booster > Data List
|
Tester Display |
|---|
|
Reaction Force Pressure |
HINT:
Perform this procedure in linear mode (switching solenoid (SSA) on).
Standard Pressure:
|
Brake Effort [N (kgf, lbf)] |
Reaction Force Pressure [MPa] |
|---|---|
|
50 (5, 11.2) |
0.00 to 0.70 |
|
100 (10, 22.5) |
0.57 to 1.37 |
|
150 (15, 33.7) |
1.18 to 1.98 |
|
200 (20, 45.0) |
1.87 to 2.67 |
| NG |
|
CHECK AND REPAIR BRAKE FLUID LEAKS |
|
|
6. |
CLEAR VEHICLE CONTROL HISTORY (RoB) |
(a) Using the GTS, clear the Vehicle Control History (RoB).
Chassis > Brake Booster > Utility
|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
|
|
7. |
CHECK VEHICLE CONTROL HISTORY (RoB) |
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Using the GTS, check for Vehicle Control History (RoB).
Chassis > Brake Booster > Utility
|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
|
Result |
Proceed to |
|---|---|
|
X21D2 is not output. |
A |
|
X21D2 is output. |
B |
| A |
|
END |
| B |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
|
|