| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000021JQL |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): C050C49,C051249; Left Rear Wheel Speed Sensor Internal Electronic Failure; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
C050C49 |
Left Rear Wheel Speed Sensor Internal Electronic Failure |
|
DTC |
C051249 |
Right Rear Wheel Speed Sensor Internal Electronic Failure |
DESCRIPTION
When the system is starting up and the skid control ECU (brake actuator assembly) detects a speed sensor circuit malfunction via the speed sensor circuit self-diagnosis function, this DTC is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C050C49 |
Left Rear Wheel Speed Sensor Internal Electronic Failure |
A circuit malfunction in the speed sensor is detected during the self test. |
|
|
C051249 |
Right Rear Wheel Speed Sensor Internal Electronic Failure |
A circuit malfunction in the speed sensor is detected during the self test. |
|
*1: for 2WD
*2: for AWD
WIRING DIAGRAM
Refer to DTC C050C12.
Click here
![2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): C050C12,C051212; Left Rear Wheel Speed Sensor Circuit Short to Battery](/t3Portal/stylegraphics/info.gif)
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
Click here
-
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Click here
PROCEDURE
|
1. |
CHECK VEHICLE |
(a) Check the vehicle specification.
|
Result |
Proceed to |
|---|---|
|
for 2WD |
A |
|
for AWD |
B |
| B |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the M50 or N58 rear speed sensor (rear axle hub and bearing assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Turn the ignition switch to ON.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N58-2 (LA+) - N58-1 (LA-) |
Ignition switch ON |
11 to 14 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M50-2 (RA+) - M50-1 (RA-) |
Ignition switch ON |
11 to 14 V |
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the M50 or N58 rear speed sensor (rear axle hub and bearing assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N58-2 (LA+) - Body ground |
Ignition switch off |
Below 1.5 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M50-2 (RA+) - Body ground |
Ignition switch off |
Below 1.5 V |
| NG |
|
|
|
4. |
INSPECT PARKING BRAKE WIRE ASSEMBLY |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the M50 or N58 rear speed sensor (rear axle hub and bearing assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N58-1 (LA-) or NN12-4 - Body ground and other terminals |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M50-1 (RA-) or MM4-4 - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPLACE PARKING BRAKE WIRE ASSEMBLY |
|
|
5. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-4 or A39-23 (RL-) - Body ground |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-4 or A39-37 (RR-) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE REAR AXLE HUB AND BEARING ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-3 - Body ground |
Ignition switch off |
Below 1.5 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-3 - Body ground |
Ignition switch off |
Below 1.5 V |
| OK |
|
REPLACE PARKING BRAKE WIRE ASSEMBLY |
|
|
7. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-3 - Body ground |
Always |
Below 1.5 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-3 - Body ground |
Always |
Below 1.5 V |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. |
CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Turn the ignition switch to ON.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-3 - NN12-4 |
Ignition switch ON |
11 to 14 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-3 - MM4-4 |
Ignition switch ON |
11 to 14 V |
| OK |
|
REPLACE PARKING BRAKE WIRE ASSEMBLY |
|
|
9. |
CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Turn the ignition switch to ON.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-3 - Body ground |
Ignition switch ON |
11 to 14 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-3 - Body ground |
Ignition switch ON |
11 to 14 V |
| NG |
|
|
|
10. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-4 - Body ground |
Always |
Below 1.5 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-4 - Body ground |
Always |
Below 1.5 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
11. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-4 - A39-23 (RL-) |
Always |
Below 1 Ω |
|
NN12-3 or A39-39 (RL+) - NN12-4 or A39-23 (RL-) |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-4 - A39-37 (RR-) |
Always |
Below 1 Ω |
|
MM4-3 or A39-22 (RR+) - MM4-4 or A39-37 (RR-) |
Always |
10 kΩ or higher |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
12. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-3 - A39-39 (RL+) |
Always |
Below 1 Ω |
|
NN12-3 or A39-39 (RL+) - Body ground |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-3 - A39-22 (RR+) |
Always |
Below 1 Ω |
|
MM4-3 or A39-22 (RR+) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
13. |
CHECK HARNESS AND CONNECTOR (SENSOR CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the M50 or N58 rear speed sensor connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Turn the ignition switch to ON.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N58-2 (LA+) - N58-1 (LA-) |
Ignition switch ON |
11 to 14 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M50-2 (RA+) - M50-1 (RA-) |
Ignition switch ON |
11 to 14 V |
| NG |
|
|
|
14. |
CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE CIRCUIT) |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the M50 or N58 rear speed sensor connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N58-2 (LA+) - Body ground |
Ignition switch off |
Below 1.5 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M50-2 (RA+) - Body ground |
Ignition switch off |
Below 1.5 V |
| NG |
|
|
|
15. |
INSPECT PARKING BRAKE WIRE ASSEMBLY |
|
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors. OK: The connector is securely connected. |
|
(b) Disconnect the M50 or N58 rear speed sensor connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N58-1 (LA-) or NN12-4 - Body ground and other terminals |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M50-1 (RA-) or MM4-4 - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPLACE PARKING BRAKE WIRE ASSEMBLY |
|
|
16. |
CHECK HARNESS AND CONNECTOR (PARKING BRAKE WIRE ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the MM4 or NN12 skid control sensor wire (parking brake wire assembly) connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
NN12-4 or A39-23 (RL-) - Body ground |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
MM4-4 or A39-37 (RR-) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|