| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM10000000214QT |
| 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): C141C49; Brake Booster Motor "A" Control Internal Electronic Failure; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
C141C49 |
Brake Booster Motor "A" Control Internal Electronic Failure |
DESCRIPTION
Refer to DTC C059400.
Click here
![2022 - 2023 MY RAV4 RAV4 HV [12/2021 - 10/2023]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C059400; Brake Booster Motor "A" Performance](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
C141C49 |
Brake Booster Motor "A" Control Internal Electronic Failure |
Either of the following is detected:
|
No. 1 skid control ECU (brake booster with master cylinder assembly) |
Comes on |
|
C141C49 DTC Detection Conditions
|
Vehicle Condition |
|||
|---|---|---|---|
|
Pattern 1 |
Pattern 2 |
||
|
Diagnosis Condition |
When the voltage at terminal +BI1 is between 7.3 and 16.6 V |
○ |
- |
|
Malfunction Status |
Overcurrent is detected in the motor relay |
○ |
- |
|
Overcurrent is detected in the motor fail-safe relay |
- |
○ |
|
|
Detection Time |
0.054 seconds or more. |
0.054 seconds or more. |
|
|
Number of Trips |
1 trip |
1 trip |
|
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
MONITOR DESCRIPTION
The motor relay which drives the pump motor and the motor fail-safe relay are built into the No. 1 skid control ECU (brake booster with master cylinder assembly). When the No. 2 skid control ECU (brake actuator assembly) judges that there is a malfunction such as overcurrent in the motor relay or motor fail-safe relay, the MIL is illuminated and a DTC is stored.
MONITOR STRATEGY
|
Related DTCs |
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 |
|
Required Sensors/Components(Main) |
No. 2 skid control ECU (brake actuator assembly) |
|
Required Sensors/Components(Related) |
No. 2 skid control ECU (brake actuator assembly) |
|
Frequency of Operation |
Continuous |
|
Duration |
0.054 seconds: C141C (Case 1 and 2) 0.120 seconds: C141C (Case 3 to 9) 4.002 seconds: C141C (Case 10) |
|
MIL Operation |
Immediately |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
C141C (Case 1)
|
Monitor runs whenever the following DTCs are not stored |
C14C7 (Case 3 to 9): Brake system voltage circuit low C14C8: Brake system voltage circuit high |
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Less than 23.2 V, and higher than 7.3 V |
|
Output duty order value (command to motor relay port) |
100% |
|
History of motor power supply voltage drop |
Off |
C141C (Case 2)
|
Monitor runs whenever the following DTCs are not stored |
None |
C141C (Case 3)
|
Monitor runs whenever the following DTCs are not stored |
C14C7 (Case 3 to 9): Brake system voltage circuit low C14C8: Brake system voltage circuit high |
|
Both of the following conditions are met |
- |
|
Brake system voltage 1 |
Less than 23.2 V, and higher than 7.3 V |
|
Command to reverse battery protection MOS |
On |
C141C (Case 4)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Less than 23.2 V, and higher than 7.3 V |
|
Motor circuit current |
Less than 264.00 A |
|
Freewheeling MOS overcurrent signal |
Off |
|
Output duty order value (command to motor relay port) |
100% |
C141C (Case 5 and 9)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Higher than 7.3 V, and less than 23.2 V |
|
MRI1 voltage |
5.7 V or more |
|
Motor relay input signal permission |
Off |
|
Command to motor relay |
Off |
|
Motor duty output order value |
0% |
|
Command to reverse battery protection MOS |
Off |
|
Command to motor fail-safe relay |
Off |
C141C (Case 6)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
+BI1 voltage |
Higher than 9.0 V |
|
Brake system voltage 1 |
Higher than 7.3 V, and less than 23.2 V |
|
MRI1 voltage |
5.7 V or more |
|
Motor relay input signal permission |
On |
|
Command to motor relay |
Off |
|
Motor duty output order value |
0% |
|
Command to reverse battery protection MOS |
Off |
|
Command to motor fail-safe relay |
Off |
C141C (Case 7)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Higher than 7.3 V, and less than 23.2 V |
|
MRI1 voltage |
5.7 V or more |
|
Motor relay input signal permission |
On |
|
Command to motor relay |
On |
|
Motor duty output order value |
100% |
|
Command to reverse battery protection MOS |
Off |
|
Command to motor fail-safe relay |
Off |
C141C (Case 8)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Higher than 7.3 V, and less than 23.2 V |
|
MRI1 voltage |
5.7 V or more |
|
Motor relay input signal permission |
Off |
|
Command to motor relay |
Off |
|
Motor duty output order value |
0% |
|
Command to reverse battery protection MOS |
On |
|
Command to motor fail-safe relay |
Off |
C141C (Case 10)
|
Monitor runs whenever the following DTCs are not stored |
None |
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Less than 23.2 V |
|
MRI1 voltage |
5.7 V or more |
|
Motor relay input signal permission |
On |
|
Command to motor relay |
On |
|
Motor duty output order value |
100% |
|
Command to reverse battery protection MOS |
Off |
|
Command to motor fail-safe relay |
Off |
|
ASIC output permission |
Off |
TYPICAL MALFUNCTION THRESHOLDS
C141C (Case 1)
|
Motor circuit current |
264.00 A or more |
C141C (Case 2)
|
Freewheeling MOS overcurrent signal |
On |
C141C (Case 3)
|
Reverse battery protection MOS gate voltage monitor |
On |
C141C (Case 4)
|
Motor relay gate voltage monitor |
On |
C141C (Case 5 and 9)
|
One of the following conditions is met |
- |
|
Motor relay gate voltage monitor |
On |
|
Freewheeling MOS gate voltage monitor |
On |
|
Reverse battery protection MOS gate voltage monitor |
On |
C141C (Case 6)
|
Freewheeling MOS gate voltage monitor |
Off |
C141C (Case 7)
|
Motor relay gate voltage monitor |
Off |
C141C (Case 8)
|
Reverse battery protection MOS gate voltage monitor |
Off |
C141C (Case 10)
|
High side voltage of motor |
3.0 V or less or 6.1 V or more |
COMPONENT OPERATING RANGE
C141C (Case 1)
|
All of the following conditions are met |
- |
|
Brake system voltage 1 |
Less than 23.2 V, and higher than 7.3 V |
|
Output duty order value (command to motor relay port) |
100% |
|
Motor circuit current |
Less than 264.00 A |
C141C (Case 2 to 9)
|
Both of the following conditions are met |
A and B |
|
A. All of the following conditions are met at the ECU status (last IG ON timing final) |
- |
|
Brake system voltage fail (C12FA, C12FB) |
Not detected |
|
Brake booster motor fail (C141C, C141D, C141E, C141F) |
Not detected |
|
Brake pressure control solenoid fail (C14F4, C14FD, C150A, C1510) |
Not detected |
|
B. All of the following conditions are met at the ECU status (pre main) |
- |
|
Brake system voltage fail (C121F, C12FA, C12FB) |
Not detected |
|
Brake booster motor fail (C141C) |
Not detected |
|
Brake pressure control solenoid fail (C14F3, C14F4, C14FC, C14FD, C1509, C150A, C150F, C1510) |
Not detected |
C141C (Case 10)
|
All of the following conditions are met |
A, B, C, D, E, F, G, H, I and J |
|
A. Brake system voltage 1 |
Less than 23.2 V |
|
B. MRI1 voltage |
5.7 V or more |
|
C. Motor relay input signal permission |
On |
|
D. Command to motor relay |
On |
|
E. Motor duty output order value |
100% |
|
F. Command to reverse battery protection MOS |
Off |
|
G. Command to motor fail-safe relay |
Off |
|
H. ASIC output permission |
Off |
|
I. All of the following conditions are met at the ECU status (last IG ON timing final) |
- |
|
Brake system voltage fail (C12FA, C12FB) |
Not detected |
|
Brake booster motor fail (C141C, C141D, C141E, C141F) |
Not detected |
|
Brake pressure control solenoid fail (C14F4, C14FD, C150A, C1510) |
Not detected |
|
J. All of the following conditions are met at the ECU status (pre main) |
- |
|
Brake system voltage fail (C121F, C12FA, C12FB) |
Not detected |
|
Brake booster motor fail (C141C) |
Not detected |
|
Brake pressure control solenoid fail (C14F3, C14F4, C14FC, C14FD, C1509, C150A, C150F, C1510) |
Not detected |
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.
-
Wait for 5 seconds or more. [*]
HINT:
[*]: 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
PROCEDURE
|
1. |
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY |
Click here
| NEXT |
|
END |
|
|