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:

Removal
1. REMOVE REAR WHEEL 2. REMOVE SKID CONTROL SENSOR WIRE (for 2WD) (a) Disconnect the skid control sensor connector. (b) Remove the bolt and disconnect the bracket from the rear axle beam assembly. HINT: Separate the RH side by the same procedures as the LH side. 3. SEPARATE SPEED SENSO ...

No Communication in Immobiliser System
DTC B2796 No Communication in Immobiliser System DTC B2798 Communication Malfunction No. 2 DESCRIPTION These codes are stored in the memory when a key that does not have a transponder chip is inserted or if communication between the key and transponder key ECU is impossible. DTC No ...

Brake fluid
Bleeding HINT: If any work is performed on the brake system or if air in the brake lines is suspected, bleed the air out of the brake system. NOTICE: Wash the brake fluid off immediately if it adheres to any painted surfaces. 1. REMOVE COWL TOP PANEL SUB-ASSEMBLY OUTER FRONT (See page SP-13 ...