Toyota Yaris: Vehicle Stability Control System / ABS Pump Motor Actuator Stuck (C142771)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| C142771 | ABS Pump Motor Actuator Stuck | Actuator pump motor does not operate properly. |
| Brake |
WIRING DIAGRAM
Refer to DTC C052C13.
Click here
CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform "Calibration".
Click here
PROCEDURE
| 1. | PERFORM ACTIVE TEST USING GTS (MOTOR RELAY) |
(a) Perform the Active Test of the motor relay using the GTS.
Chassis > Brake > Active Test| Tester Display | Measurement Item | Control Range | Restrict Condition | Diagnostic Note |
|---|---|---|---|---|
| Motor Relay | ABS motor relay | OFF / ON | Vehicle condition: Vehicle stopped HINT: To protect this Actuator and Solenoid, this test will only last 5 seconds. | - |
| Tester Display |
|---|
| Motor Relay |
(b) Check the operating sound of the pump motor when operating it using the GTS.
| Result | Proceed to |
|---|---|
| Operating sound is heard | A |
| Operating sound is not heard | B |
| B |
 | GO TO STEP 4 |
|
| 2. | CLEAR DTC |
(a) Operate the GTS to clear the codes.
Chassis > Brake > Clear DTCs(b) Press the DTC clear button.
(c) Turn the ignition switch off.
|
| 3. | RECONFIRM DTC |
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Operate the GTS to read the DTCs.
Chassis > Brake > Trouble Codes(c) Check if the same DTC is output.
| Result | Proceed to |
|---|---|
| C142771 is not output | A |
| C142771 is output | B |
HINT:
- If a speed signal of 20 km/h (12 mph) or more is input to the skid control ECU (brake actuator assembly) with the ignition switch ON and the stop light switch assembly off, the ECU performs self-diagnosis of the pump motor circuit.
- If the normal system code is output (no DTCs are output), slightly jiggle the connectors, wire harness, and fuses of the skid control ECU (brake actuator assembly).
- If any DTCs are output while jiggling a connector or wire harness of the skid control ECU (brake actuator assembly), inspect and repair the connector or wire harness.
- If no DTCs were output when reconfirming DTCs, checking for intermittent problems is necessary because it is suspected that the original DTCs were stored due to the poor connection of a connector terminal.
| A |
 | USE SIMULATION METHOD TO CHECK |
| B |
 | REPLACE BRAKE ACTUATOR ASSEMBLY |
| 4. | CHECK HARNESS AND CONNECTOR (GND2 TERMINAL) |
(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) Disconnect the A108 skid control ECU (brake actuator 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:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A108-1 (GND2) - Body ground | 1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal | Below 1 Ω |
| OK |
 | REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG |
 | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Stop Lamp Relay Actuator Stuck Off (C13807F)
DESCRIPTION Refer to DTC C13807E. Click here
DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from C13807F Stop Lamp Relay Actuator Stuck Off Either of the following is detected:
When the IGR terminal voltage exceeds 10 V and the +BS terminal voltage is from 9...
ABS Solenoid Control Module Actuator Stuck On (C143A7E,C143A7F)
DESCRIPTION The ABS solenoid relay is built into the skid control ECU in the brake actuator assembly. The ABS solenoid relay supplies power to the holding solenoid and reduction solenoid...
Other information:
Toyota Yaris XP210 (2020-2024) Owner's Manual: Using Automatic Locking Mode (if equipped)
Follow these instructions when using a child-restraint system, unless you are attaching a LATCH-equipped child-restraint system to the rear LATCH lower anchors. Refer to “Using LATCH Lower Anchor”. Make sure the seatback is securely latched by pushing it back until it is fully locked...
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Cooling is Poor
DESCRIPTION If the cooling effect of the air conditioning system is weak, the following factors may be the cause. Symptom Factor Cooling effectiveness is poor Cooling response is slow ECO drive mode function (air flow volume is restricted due to ECO drive mode being selected) Compressor with pulley assembly malfunction Refrigerant volume (high) Refrigerant volume (low) Clogged cooler condenser assembly fins Cooling fan system malfunction Mechanical locking of damper and damper link Automatic light control sensor malfunction High inlet air temperature PROCEDURE 1...
Categories
- Manuals Home
- Toyota Yaris Owners Manual
- Toyota Yaris Service Manual
- Key Battery Replacement
- Diagnostic Trouble Code Chart
- Low Engine Coolant Temperature Indicator Light (Blue)
- New on site
- Most important about car
Fuel Gauge
The fuel gauge shows approximately how much fuel is remaining in the tank when the ignition is switched ON. We recommend keeping the tank over 1/4 full.
