| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000260RM |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C050C14; Left Rear Wheel Speed Sensor Circuit Short to Ground or Open; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ] | ||
|
DTC |
C050C14 |
Left Rear Wheel Speed Sensor Circuit Short to Ground or Open |
DESCRIPTION
Refer to DTC C050C12.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C050C12; Left Rear Wheel Speed Sensor Circuit Short to Battery](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C050C14 |
Left Rear Wheel Speed Sensor Circuit Short to Ground or Open |
An open in the speed sensor signal circuit continues for 0.5 seconds or more. |
|
WIRING DIAGRAM
Refer to DTC C050C12.
Click here
PROCEDURE
|
1. |
READ VALUE USING GTS (MOMENTARY INTERRUPTION) |
(a) Select the line graph display on the GTS.
(b) Check for any momentary interruption in the wire harness and connector.
Click here
Chassis > Brake/EPB > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
RL Speed Open |
Rear speed sensor LH open detection |
Normal / Under intermittent |
Normal: Momentary interruption not detected Under intermittent: Momentary interruption detected |
- |
|
RL Speed Sensor Voltage Open |
Rear speed sensor LH voltage open detection |
Normal / Under intermittent |
Normal: Momentary interruption not detected Under intermittent: Momentary interruption detected |
- |
Chassis > Brake/EPB > Data List
|
Tester Display |
|---|
|
RL Speed Open |
|
RL Speed Sensor Voltage Open |
OK:
Normal (There are no momentary interruptions.)
NOTICE:
Perform the above inspection before removing the sensor and connector.
| OK |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR LH - 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 A140 skid control ECU (brake actuator assembly) connector.
(c) Disconnect the O205 rear speed sensor LH 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:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O205-2 (RL+) - A140-5 (RL+) |
Always |
Below 1 Ω |
|
O205-2 (RL+) or A140-5 (RL+) - Body ground |
Always |
10 kΩ or higher |
|
O205-1 (RL-) - A140-4 (RL-) |
Always |
Below 1 Ω |
|
O205-1 (RL-) or A140-4 (RL-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT BRAKE ACTUATOR ASSEMBLY (SENSOR POWER SOURCE CIRCUIT) |
|
(a) Reconnect the A140 skid control ECU (brake actuator assembly) connector. |
|
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O205-2 (RL+) - Body ground |
Ignition switch ON |
11 to 14 V |
| OK |
|
| NG |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|