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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 982 (CHASSIS DIAGNOSTIC PROCEDURES - ANTI-LOCK BRAKE SYSTEM)
2004 Toyota Matrix XR, FWD, Standard
Section 982 (Chassis Diagnostic Procedures - Anti-Lock Brake System)
2004 Toyota Matrix XR, FWD, StandardSECTION Section 982 (Chassis Diagnostic Procedures - Anti-Lock Brake System)
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Identification Of System
- System Description And Functional Operation
- Disclaimers, Safety, Warnings
- Required Tools And Equipment
- Glossary Of Terms
- Diagnostic Information And Procedures
- Notes
- Brakes (Cab) - Symptoms
- Symptom: BATTERY VOLTAGE OUT OF RANGE
- Symptom: BCM MESSAGES NOT RECEIVED
- Symptom: CAB INTERNAL FAILURE
- Symptom: INSTRUMENT CLUSTER BULB FAILURE
- Symptom List: LEFT FRONT SENSOR CIRCUIT FAILURE; LEFT REAR SENSOR CIRCUIT FAILURE; RIGHT FRONT SENSOR CIRCUIT FAILURE; RIGHT REAR SENSOR CIRCUIT FAILURE
- Symptom List: LEFT FRONT WHEEL SPEED SIGNAL FAILURE; LEFT REAR WHEEL SPEED SIGNAL FAILURE; RIGHT FRONT WHEEL SPEED SIGNAL FAILURE; RIGHT REAR WHEEL SPEED SIGNAL FAILURE
- Symptom: MIC MESSAGES NOT RECEIVED
- Symptom: PCI BUS COMMUNICATION FAULT
- Symptom: PCI BUS LOOPBACK FAILURE
- Symptom: PCI BUS SHORTED TO GROUND
- Symptom: PCI BUS SHORTED TO VOLTAGE
- Symptom: PCI HARDWARE FAILURE
- Symptom: PCM MESSAGES NOT RECEIVED
- Symptom: PUMP MOTOR CIRCUIT FAILURE
- Communication - Symptoms
- Verification Tests
- Component Locations
- Connector PINOUTS
- Brake Lamp Switch - Black 6 Way
- Controller Antilock Brake - Black 47 Way
- Data Link Connector - Black 16 Way
- Traction Control Switch - Black 3 Way
- Wheel Speed Sensor - Left Front - LT. Gray 2 Way
- Wheel Speed Sensor - Left Rear - LT. Gray 2 Way
- Wheel Speed Sensor - Right Front - LT. Gray 2 Way
- Wheel Speed Sensor - Right Rear - LT. Gray 2 Way
- Schematic Diagram
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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.