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 MANUALSTOYOTA20054 RUNNER 2WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE DESCRIPTIONSCAN COMMUNICATION SYSTEM
2005 Toyota 4 Runner 2WD V8-4.7L (2UZ-FE)
CAN Communication System
2005 Toyota 4 Runner 2WD V8-4.7L (2UZ-FE)SECTION CAN Communication System
DIAGNOSTIC TROUBLE CODE CHART
1. DTC TABLE BY ECU
HINT: If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING".
a. Skid Control ECU
HINT: DTC communication uses the SIL line.
b. ECM
HINT: The ECM is connected to the CAN communication system but CAN communication system DTCs are not output.
U0073/94 - U0126/63:
1. DTC TABLE BY ECU
HINT: If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING".
a. Skid Control ECU
HINT: DTC communication uses the SIL line.
b. ECM
HINT: The ECM is connected to the CAN communication system but CAN communication system DTCs are not output.
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.