| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EEK2 |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 12/2021] |
| Title: STOP AND START: STOP AND START SYSTEM: P055511,P055515; Brake Booster Pressure Sensor Circuit Short to Ground; 2019 - 2021 MY RAV4 [11/2018 - 12/2021] | ||
|
DTC |
P055511 |
Brake Booster Pressure Sensor Circuit Short to Ground |
|
DTC |
P055515 |
Brake Booster Pressure Sensor Circuit Short to Battery or Open |
DESCRIPTION
The engine stop and start ECU determines changes in the brake booster assembly pressure based on the voltage signal received from the vacuum sensor assembly in the brake booster assembly.
If the engine stop and start ECU judges that the signal received from the vacuum sensor assembly is abnormal, it stores DTC P055511 or P055515 and blinks the stop and start cancel indicator.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P055511 |
Brake Booster Pressure Sensor Circuit Short to Ground |
Both of the following conditions are met for 2 seconds or more (1 trip detection logic):
|
|
Blinks |
DTC stored |
SAE Code: P0557 |
|
P055515 |
Brake Booster Pressure Sensor Circuit Short to Battery or Open |
Both of the following conditions are met for 2 seconds or more (1 trip detection logic):
|
|
Blinks |
DTC stored |
SAE Code: P0558 |
CONFIRMATION DRIVING PATTERN
CONFIRMATION AFTER TROUBLESHOOTING
HINT:
-
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)
-
If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
- After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
- Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Stop and Start > Clear DTCs
(e) Start the engine and allow it to idle for 15 seconds or more.
(f) Stop the engine and turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Enter the following menus: Powertrain / Stop and Start / Data List / Brake Boost Pressure.
Powertrain > Stop and Start > Data List
|
Tester Display |
|---|
|
Brake Boost Pressure |
(i) While depressing the brake pedal several times, check that the Brake Boost Pressure value changes.
(j) Check that DTCs are not output.
Powertrain > Stop and Start > Trouble Codes
STOP AND START SYSTEM OPERATION CHECK
HINT:
-
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)
-
If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
- After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
(a) Start the engine and warm it up.
(b) Turn the air conditioning system off.
(c) Drive the vehicle at 7 km/h (4 mph) or more.
CAUTION:
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
(d) Depress the brake pedal and stop the vehicle.
(e) Allow the engine to stop by stop and start control. (Keep the shift lever in D.)
(f) Release the brake pedal with the shift lever in D to start the engine.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.
Click here
![2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION](/t3Portal/stylegraphics/info.gif)
-
After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.
Click here
-
After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.
Click here
-
When the engine stop and start ECU or oil pump with solenoid assembly is replaced, check the oil pump with solenoid assembly.
Click here
HINT:
-
Using the Techstream, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.
Click here
-
DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.
Click here
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (PB TERMINAL VOLTAGE) |
|
*a |
Component with harness connected (Engine Stop and Start ECU) |
- |
- |
(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A34-13 (PB) - A34-3 (BRE2) |
Ignition switch ON |
Higher than 0.6 V or below 4.5 V |
| OK |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - VACUUM SENSOR ASSEMBLY) |
(a) Disconnect the engine stop and start ECU connector.
(b) Disconnect the vacuum sensor assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A34-13 (PB) - A35-2 (PB) |
Always |
Below 1 Ω |
|
A34-14 (BRVC) - A35-3 (VC) |
Always |
Below 1 Ω |
|
A34-3 (BRE2) - A35-1 (E2) |
Always |
Below 1 Ω |
|
A34-13 (PB) or A35-2 (PB) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
A34-14 (BRVC) or A35-3 (VC) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK ENGINE STOP AND START ECU (BRVC TERMINAL VOLTAGE) |
|
*a |
Component with harness connected (Engine Stop and Start ECU) |
- |
- |
(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A34-14 (BRVC) - A34-3 (BRE2) |
Ignition switch ON |
4.5 to 5.5 V |
| NG |
|
REPLACE ENGINE STOP AND START ECU
|
|
|
4. |
REPLACE VACUUM SENSOR ASSEMBLY |
(a) Replace the vacuum sensor assembly.
Click here
|
|
5. |
CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.
(e) Clear the DTC.
Powertrain > Stop and Start > Clear DTCs
|
|
6. |
CHECK DTC OUTPUT |
(a) Enter the following menus: Powertrain / Stop and Start / Trouble Codes.
(b) Check that no DTCs are output.
Powertrain > Stop and Start > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC P055511 or P055515 is output |
B |
| A |
|
END |
| B |
|
REPLACE ENGINE STOP AND START ECU
|
|
|