| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EA9G |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): C050012,C050612; Left Front Wheel Speed Sensor Circuit Short to Battery; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ] | ||
|
DTC |
C050012 |
Left Front Wheel Speed Sensor Circuit Short to Battery |
|
DTC |
C050612 |
Right Front Wheel Speed Sensor Circuit Short to Battery |
DESCRIPTION
Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS and VSC control.
The speed sensor detects the magnetic fields of the speed sensor rotor as it rotates and outputs a pulse signal.
The frequency of the pulse varies in accordance with the rotational speed of the speed sensor rotor and the system uses this to determine the wheel speed.
HINT:
The following example shows a pulse signal that is output when the wire harness connectors are connected to the speed sensors and skid control ECU (brake actuator assembly).
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C050012 |
Left Front Wheel Speed Sensor Circuit Short to Battery |
A short to +B in the speed sensor signal circuit is detected for 0.12 seconds or more. |
|
|
C050612 |
Right Front Wheel Speed Sensor Circuit Short to Battery |
A short to +B in the speed sensor signal circuit is detected for 0.12 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
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![2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): UTILITY](/t3Portal/stylegraphics/info.gif)
-
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
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PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (SENSOR GROUND 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 A91 or A92 front 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 |
|---|---|---|
|
A92-1 (FL+) - A92-2 (FL-) |
Ignition switch ON |
11 to 14 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A91-1 (FR+) - A91-2 (FR-) |
Ignition switch ON |
11 to 14 V |
| OK |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - 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 A91 or A92 front speed sensor 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 |
|---|---|---|
|
A92-2 (FL-) - Body ground |
Always |
Below 1.5 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A91-2 (FR-) - Body ground |
Always |
Below 1.5 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - 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 A91 or A92 front speed sensor 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 |
|---|---|---|
|
A92-1 (FL+) or A39-24 (FL+) - A92-2 (FL-) or A39-7 (FL-) |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A91-1 (FR+) or A39-21 (FR+) - A91-2 (FR-) or A39-26 (FR-) |
Always |
10 kΩ or higher |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|