Toyota Sienna Service Manual: System diagram

Definition of terms

Terms Definitions Monitor Description Description of what ECM monitors and how to detect malfunctions (monitoring purpose and details). Related DTCs A gro ...

How to proceed with troubleshooting

HINT: The intelligent tester can be used in steps 2, 3, 4, 6 and 9. 1 VEHICLE BROUGHT TO WORKSHOP 2 CONNECT INTELLIGENT TESTER TO DLC3 HINT: If the display indicates a communication fault in th ...

Other materials:

On-vehicle inspection
1. INSPECT COOLER CONDENSER CORE (a) If the fin of the cooler condenser core is dirty, clean it with water and dry it with compressed air. NOTICE: Do not damage the fin of the cooler condenser core. (b) If the fin of the cooler condenser core is bent, make it straight using a screwdriver or p ...

DTC check / clear
1. CHECK DTC (USING INTELLIGENT TESTER)  Checking DTCs.  Connect the intelligent tester to the DLC3.  Turn the ignition switch ON. Read DTCs by following the prompts on the tester screen. HINT: Refer to the intelligent tester operator's manual for further deta ...

Terminals of ECU
1. CENTER AIRBAG SENSOR ASSEMBLY (w/ Side Airbag) 2. CENTER AIRBAG SENSOR ASSEMBLY (w/o Side Airbag) ...