Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2009YARIS BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLBRAKE CONTROLANTI-LOCK BRAKE SYSTEM (FOR HATCHBACK)PROBLEM SYMPTOMS TABLE
2009 Toyota Yaris Base, 4D Sedan, Automatic
Problem Symptoms Table
2009 Toyota Yaris Base, 4D Sedan, AutomaticSECTION Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
NOTE:
When replacing the brake actuator assembly, sensor, etc., turn the ignition switch off.
Anti-Lock Brake System
ANTI-LOCK BRAKE SYSTEM - PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | Reference |
|---|---|---|
| ABS and/or EBD does not operate | Check for DTCs again and make sure that the normal system code is output. | DIAGNOSIS SYSTEM |
| IG power source circuit (Low power supply) | DTC C1241 LOW POWER SUPPLY VOLTAGE MALFUNCTION | |
| IG power source circuit (High power supply) | DTC C1417 HIGH POWER SUPPLY VOLTAGE MALFUNCTION | |
| Front speed sensor (Comparison malfunction) | DTC C1401 FRONT SPEED SENSOR RH MALFUNCTION; DTC C1402 FRONT SPEED SENSOR LH MALFUNCTION | |
| Front speed sensor (Open or short circuit) | DTC C1405 OPEN OR SHORT IN FRONT SPEED SENSOR RH CIRCUIT; DTC C1406 OPEN OR SHORT IN FRONT SPEED SENSOR LH CIRCUIT | |
| Front speed sensor (Signal malfunction) | DTC C1413 FRONT SPEED SENSOR RH OUTPUT MALFUNCTION; DTC C1414 FRONT SPEED SENSOR LH OUTPUT MALFUNCTION | |
| Rear speed sensor (Comparison malfunction) | DTC C1403 REAR SPEED SENSOR RH MALFUNCTION; DTC C1404 REAR SPEED SENSOR LH MALFUNCTION | |
| Rear speed sensor (Open or short circuit) | DTC C1407 OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; DTC C1408 OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |
| Rear speed sensor (Signal malfunction) | DTC C1415 REAR SPEED SENSOR RH OUTPUT MALFUNCTION; DTC C1416 REAR SPEED SENSOR LH OUTPUT MALFUNCTION | |
| Check the brake actuator assembly with the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | DATA LIST/ACTIVE TEST | |
| If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | BRAKE ACTUATOR | |
| ABS and/or EBD does not operate efficiently | Check for DTCs again and make sure that the normal system code is output. | DIAGNOSIS SYSTEM |
| Front speed sensor (Comparison malfunction) | DTC C1401 FRONT SPEED SENSOR RH MALFUNCTION; DTC C1402 FRONT SPEED SENSOR LH MALFUNCTION | |
| Front speed sensor (Open or short circuit) | DTC C1405 OPEN OR SHORT IN FRONT SPEED SENSOR RH CIRCUIT; DTC C1406 OPEN OR SHORT IN FRONT SPEED SENSOR LH CIRCUIT | |
| Front speed sensor (Signal malfunction) | DTC C1413 FRONT SPEED SENSOR RH OUTPUT MALFUNCTION; DTC C1414 FRONT SPEED SENSOR LH OUTPUT MALFUNCTION | |
| Rear speed sensor (Comparison malfunction) | DTC C1403 REAR SPEED SENSOR RH MALFUNCTION; DTC C1404 REAR SPEED SENSOR LH MALFUNCTION | |
| Rear speed sensor (Open or short circuit) | DTC C1407 OPEN OR SHORT IN REAR SPEED SENSOR RH CIRCUIT; DTC C1408 OPEN OR SHORT IN REAR SPEED SENSOR LH CIRCUIT | |
| Rear speed sensor (Signal malfunction) | DTC C1415 REAR SPEED SENSOR RH OUTPUT MALFUNCTION; DTC C1416 REAR SPEED SENSOR LH OUTPUT MALFUNCTION | |
| Stop light switch circuit | DTC C1425 OPEN IN STOP LIGHT SWITCH CIRCUIT | |
| Check the brake actuator assembly with the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. | DATA LIST/ACTIVE TEST | |
| If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | BRAKE ACTUATOR | |
| ABS sensor DTC check cannot be done | Check for DTCs again and make sure that the normal system code is output. | DIAGNOSIS SYSTEM |
| TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT | |
| If the symptoms still occur even after the above circuit in the suspected area has been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). | BRAKE ACTUATOR | |
| ABS warning light abnormal (Remains on) | ABS warning light circuit | ABS WARNING LIGHT REMAINS ON |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR | |
| ABS warning light abnormal (Does not come on) | ABS warning light circuit | ABS WARNING LIGHT DOES NOT COME ON |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR | |
| Brake warning light abnormal (Remains on) | Brake warning light circuit | BRAKE WARNING LIGHT REMAINS ON |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR | |
| Brake warning light abnormal (Does not come on) | Brake warning light circuit | BRAKE WARNING LIGHT DOES NOT COME ON |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR | |
| Sensor check cannot be done | TS and CG terminal circuit | TS AND CG TERMINAL CIRCUIT |
| Brake actuator assembly (Skid control ECU) | BRAKE ACTUATOR |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.