Toyota Sienna Service Manual: How to proceed with troubleshooting

Check and replace ecu

NOTICE: • The connector should not be disconnected from the ECU. Perform the inspection from the backside of the connector on the wire harness side. • When no measuring condition is s ...

Operation flow

HINT: Perform troubleshooting in accordance with the procedures below. The following is an outline of basic troubleshooting procedures. Confirm the troubleshooting procedures for the circuit you a ...

Other materials:

If your vehicle overheats
The following may indicate that your vehicle is overheating. The needle of the engine coolant temperature gauge enters the red zone or a loss of engine power is experienced. (For example, the vehicle speed does not increase.) The warning message indicating overheats is shown on the mult ...

Eject Error/ Elevator Error/ Clamp Error
DTC 63-45 Eject Error DTC 63-51 Elevator Error DTC 63-52 Clamp Error DESCRIPTION DTC No. DTC Detection Condition Trouble Area 63-45 Magazine cannot be ejected. Radio and navigation assembly 63-51 Mechanical error occurs during elevator ...

CAN Bus Line
DESCRIPTION When any DTC for the CAN communication system is output, first measure the resistance between the terminals of the DLC3 to specify the trouble area, and check that there is no short in the CAN main wire, between the main wire, and +B or GND. WIRING DIAGRAM INSPECTION PRO ...