Toyota Sienna Service Manual: How to troubleshoot ecu controlled systems

Vehicle lift and support locations

1. NOTICE ABOUT VEHICLE CONDITION WHEN JACKING UP VEHICLE (a) The vehicle must be unloaded before jacking up/ lifting up the vehicle. Never jack up/lift up a heavily loaded vehicle. (b) When re ...

General information

A large number of ECU controlled systems are used in the SIENNA. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoo ...

Other materials:

Chassis
GENERAL MAINTENANCE 1. INSPECT STEERING LINKAGE (a) Check the steering linkage for looseness or damage. Check that: Tie rod ends do not have excessive play. Dust seals and boots are not damaged. Boot clamps are not loose. (b) Inspect the dust cover for damage. 2. INSPECT STEERING G ...

Diagnosis system
1. DESCRIPTION (a) Release the parking brake pedal. (b) Check the warning lights. When ignition switch is turned ON, check that the ABS warning light and brake warning light come on for 3 seconds. HINT: When parking brake is applied or the level of the brake fluid is low, the bra ...

Grocery bag hooks
The hooks are designed to hang things like a grocery bag. Type A (front seatback) (if equipped) Type B (third seatback) Type C (luggage compartment) Type D (luggage compartment) Pull the hook up. WARNING Type C: When not in use, keep the grocery ...