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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 635 (CAN COMMUNICATION SYSTEM - DIAGNOSTICS)DIAGNOSTIC TROUBLE CODE CHART
2004 Toyota Matrix XR, FWD, Standard
Diagnostic Trouble Code Chart
2004 Toyota Matrix XR, FWD, StandardSECTION Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
- DTC COMBINATION TABLE NOTE: Complete "CHECK CAN BUS LINE" (See CHECK CAN BUS LINE ), to confirm that there is no disconnection in the CAN main bus lines and there is short circuit, short to B+ or short to ground in CAN main bus lines, and then perform troubleshooting according to the DTC combination table.
- Confirm the trouble mode according to the combination of output DTCs.TROUBLE MODE OUTPUT
Trouble Mode (1) U0121/94 U0123/62 U0124/95 U0126/63 Skid Control ECU Communication Stop Mode X X X X Yaw Rate Sensor Communication Stop Mode - X X X Steering Sensor Communication Stop Mode - - - X (1) Refer to DIAGNOSTIC TROUBLE CODES for diagnostic procedure HINT:
- U0121/94, U0123/62, U0124/95 and U0126/63 are the DTCs in the CAN communication system.
- The above table shows combinations of these DTCs.
- "X" DTCs that are being output.
- "-" DTCs that are not being output.
- Confirm the trouble mode by referring to the above table. Then check the parts to be replaced and procedure to perform, by referring to the table below.DIAGNOSTIC TROUBLE CODES
DTC No. Description Suspect Area Action U0121/94, U0123/62, U0124/95 & U0126/63 Skid Control ECU Communication Stop Mode, These Codes Are Output Simultaneously Skid Control ECU Replace Skid Control ECU U0126/63 & U0124/95 Yaw Rate Sensor Communication Stop Mode, These Codes Are Output Simultaneously - Open circuit between Yaw rate sensor and junction connector
- Yaw rate sensor power source / internal malfunction
Refer to DTC No. U0126/63 Steering Sensor Communication Stop Mode, This Code Only - Steering sensor power source / internal malfunction
Refer to DTC No.
- Confirm the trouble mode according to the combination of output DTCs.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.