Sienna FWD V6-3.3L (3MZ-FE) (2006)
a. Check the DTCs.
1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position.
3. Check the DTCs by following the prompts on the tester screen.
HINT: Refer to the intelligent tester operator's manual for further details.
Without Scan Tool
TOYOTA does not provide a procedure for Reading Trouble Codes Without Scan Tool.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
Problem Symptoms Table - Occupant Classification System
HINT: Proceed to the troubleshooting for each circuit in the table.
Symptom Simulation
SYMPTOM SIMULATION
HINT: The most difficult case in troubleshooting is when no symptoms occur. In such cases, a thorough customer problem analysis must be carried out.
Then the same or similar conditions and environment in which the problem occurred in the customer's vehicle should be simulated. No matter how
experienced or skilled a technician may be, if he proceeds to troubleshoot without confirming the problem symptoms, he will likely overlook something
important and make a wrong guess at some points in the repair operation.
This leads to a standstill in troubleshooting.