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 DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSSERVICE PRECAUTIONSCAN 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
PRECAUTION
1. BUS LINE REPAIR
a. After repairing the bus line with solder, wrap the repaired part with vinyl tape.
NOTE:
- The CANL bus line and CANH bus line must be installed together all the time. When installing, make sure to twist them. CAN bus lines are likely to be influenced by noise if the bus lines are not twisted.
- The difference in length of the CANL bus line and CANH bus line should be within 100 mm (3.937 in.).
- Leave approximately 80 mm (3.150 in.) loose in the twist around the connector.
b. Do not use a bypass wire between the connectors.
NOTE: The feature of the twisted wire harness will be lost if you use a bypass wire.
2. CONNECTOR HANDLING
a. When inserting tester probes into a connector, insert them from the rear of the connector.
b. If it is impossible to check continuity from the rear of the connector, then use a repair wire to check the connector.
3. PRECAUTION FOR DISCONNECTING THE BATTERY CABLE
NOTE: When disconnecting the battery terminal, initialize the following system after the terminal is reconnected.
System Name
Back Door Power Window Control System
1. BUS LINE REPAIR
a. After repairing the bus line with solder, wrap the repaired part with vinyl tape.
NOTE:
- The CANL bus line and CANH bus line must be installed together all the time. When installing, make sure to twist them. CAN bus lines are likely to be influenced by noise if the bus lines are not twisted.
- The difference in length of the CANL bus line and CANH bus line should be within 100 mm (3.937 in.).
- Leave approximately 80 mm (3.150 in.) loose in the twist around the connector.
b. Do not use a bypass wire between the connectors.
NOTE: The feature of the twisted wire harness will be lost if you use a bypass wire.
2. CONNECTOR HANDLING
a. When inserting tester probes into a connector, insert them from the rear of the connector.
b. If it is impossible to check continuity from the rear of the connector, then use a repair wire to check the connector.
3. PRECAUTION FOR DISCONNECTING THE BATTERY CABLE
NOTE: When disconnecting the battery terminal, initialize the following system after the terminal is reconnected.
System Name
Back Door Power Window Control System
RENDER: 1.0x
NO RELATED
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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.