Toyota Sienna Service Manual: Electronic circuit inspection procedure

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 ...

Basic inspection

(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS (1) Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°C (68°F). Resistance measurements may b ...

Other materials:

Removal
1. Remove rear wheel 2. Remove exhaust pipe assembly Hint: (see page ex-8) 3. Remove propeller with center bearing shaft assembly Hint: (see page pr-3) 4. REMOVE REAR DIFFERENTIAL FILLER PLUG (A) using a hexagon wrench (10 mm), remove the filler plug and gasket. 5. Remove rear differentia ...

Precaution
1. SRS AIRBAG SYSTEM HANDLING PRECAUTIONS This vehicle is equipped with an SRS (Supplemental Restraint System) such as the driver airbag and front passenger airbag. Failure to carry out service operations in the correct sequence could cause unexpected SRS deployment during servicing an ...

How to proceed with troubleshooting
HINT:  Use these procedures to troubleshoot the power door lock control system.  The intelligent tester should be used in steps 3 and 5. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS Interview the customer to confirm the trouble 3 INSPECT COMMUNICATION FUNCTI ...