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 MANUALSTOYOTA2006SEQUOIA 4WD V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE DESCRIPTIONSCAN COMMUNICATION SYSTEM
2006 Toyota Sequoia 4WD V8-4.7L (2UZ-FE)
CAN Communication System
2006 Toyota Sequoia 4WD 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.
- If C1201/51, C1202/52 or C1203/53 is output from skid control ECU, perform troubleshooting of each diagnosis code.
b. ECM
HINT: The ECM is connected to the CAN communication system, but CAN communication system DTCs are not output.
c. Translate ECU
HINT: The translate ECU outputs DTCs only via the BRAKE warning light. Therefore, the DTCs cannot be checked on the intelligent tester display via the CAN VIM.
d. Suspension Control ECU
HINT: DTC communication uses the SIL line.
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.
- If C1201/51, C1202/52 or C1203/53 is output from skid control ECU, perform troubleshooting of each diagnosis code.
b. ECM
HINT: The ECM is connected to the CAN communication system, but CAN communication system DTCs are not output.
c. Translate ECU
HINT: The translate ECU outputs DTCs only via the BRAKE warning light. Therefore, the DTCs cannot be checked on the intelligent tester display via the CAN VIM.
d. Suspension Control ECU
HINT: DTC communication uses the SIL line.
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.