| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM10000000214QM |
| 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): C139A00,C13D900,C14EC7E; Brake Pressure Control solenoid Circuit Malfunction; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
C139A00 |
Brake Pressure Control solenoid Circuit Malfunction |
|
DTC |
C13D900 |
Brake Pressure Too Low (Brake Booster) |
|
DTC |
C14EC7E |
Brake Pressure Control solenoid "C" Actuator Stuck On |
DESCRIPTION
The No. 1 skid control ECU (brake booster with master cylinder assembly) controls the brake fluid pressure of the master cylinder based on the output of the brake fluid pressure sensor.
DTCs may be stored if one of the following occurs:
- Brake fluid leaks.
- Foreign matter enters a solenoid valve.
- Line pressure drops during air bleeding.
- Brake pads are replaced.
- Rotors are replaced.
HINT:
Brake pressure control solenoid "C": Solenoid SLA
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
C139A00 |
Brake Pressure Control solenoid Circuit Malfunction |
Malfunction in one of the two circuits (leakage, etc.). |
|
Does not come on |
Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) |
|
C13D900 |
Brake Pressure Too Low (Brake Booster) |
Fluid pressure control performance degraded (pressure excessively low) |
|
Does not come on |
Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) |
|
C14EC7E |
Brake Pressure Control solenoid "C" Actuator Stuck On |
SLA valve malfunction (stuck closed, etc.) |
|
Does not come on |
Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) |
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 - 2024 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. |
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 (yellow indicator) illuminated.
(b) Using the GTS, check for Freeze Frame Data that is recorded when a DTC is stored.
Click here
Chassis > Brake Booster > Trouble Codes
HINT:
Freeze Frame Data is only stored once when a DTC is stored.
|
|
2. |
CLEAR DTC |
(a) Clear the DTCs.
Chassis > Brake Booster > Clear DTCs
Chassis > Brake/EPB > Clear DTCs
(b) Turn the ignition switch off.
|
|
3. |
CHECK DTC |
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Check if the same DTC is output.
Chassis > Brake Booster > Trouble Codes
Chassis > Brake/EPB > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
Only DTCs C139A00, C13D900 and/or C14EC7E are output. |
A |
|
DTCs other than C139A00, C13D900 and/or C14EC7E are output. |
B |
| B |
|
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
|
4. |
CHECK FOR FLUID LEAK |
(a) Based on the Freeze Frame Data or interview with the customer, inspect the following items for brake fluid leaks:
- The brake lines from the brake booster with master cylinder assembly to each wheel cylinder.
- The main body of the brake booster with master cylinder assembly and brake actuator assembly.
OK:
There are no fluid leaks.
| NG |
|
REPAIR OR REPLACE APPLICABLE PART |
|
|
5. |
PERFORM AIR BLEEDING |
(a) Clear the DTCs.
Chassis > Brake Booster > Clear DTCs
Chassis > Brake/EPB > Clear DTCs
(b) Perform the air bleeding procedure in Bleed Brake System.
Click here
|
|
6. |
CHECK BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (ACTUATOR SIDE) |
(a) Turn the ignition switch off.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(c) After 4 minutes elapse after turning the power switch off, disconnect the A104 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
| NG |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
|
|
7. |
CHECK HARNESS AND CONNECTOR (VEHICLE SIDE) |
(a) Reconnect the A104 No. 1 skid control ECU (brake booster with master cylinder assembly) connector.
(b) Measure the voltage and resistance on the wire harness side.
Click here
OK:
Voltage and resistance readings are all normal.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. |
CLEAR DTC |
(a) Clear the DTCs.
Chassis > Brake Booster > Clear DTCs
(b) Turn the ignition switch off.
|
|
9. |
RECONFIRM DTC |
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Check if the same DTC is output.
Chassis > Brake Booster > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs C139A00, C13D900 and C14EC7E are not output. |
A |
|
DTCs C139A00, C13D900 and/or C14EC7E are output. |
B |
|
DTC C139A00 and C140A00 are output at the same time. |
C |
HINT:
If the system returns to normal, it is suspected that a DTC was stored due to a poor connection of a terminal in a connector, air in the system, etc.
| A |
|
| B |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
|
| C |
|
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY AND BRAKE ACTUATOR ASSEMBLY for Brake Booster with Master Cylinder Assembly: Click here
for Brake Actuator Assembly: Click here
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