Toyota Sienna Service Manual: How to proceed with troubleshooting
HINT:
- Use the following procedures to troubleshoot the tire pressure warning system.
- *: Use the intelligent tester.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
(a) Interview the customer to confirm the trouble.
HINT: It is important to collect as much specific information as possible from the customer to allow for a quick repair.
3 ADJUST TIRE PRESSURE
(a) Adjust all tire pressures to the standard values.
Result
4 CHECK FOR DTC*
(a) Check for DTCs (See page TW-34).
Result 
5 DTC CHART
(a) Refer to DIAGNOSTIC TROUBLE CODE CHART (See page TW-37).
Go to step 7
6 PROBLEM SYMPTOMS TABLE
(a) Refer to PROBLEM SYMPTOMS TABLE (See page TW- 28).
7 CIRCUIT INSPECTION*
(a) Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE (See page IN-30).
8 REPAIR OR REPLA
(a) Repair or replace parts based on the diagnosis result.
9 CONFIRMATION TEST
(a) Check the DATA LIST to confirm that the tire inflation pressure has been received (See page TW-35).
(b) Perform initialization (See page TW-23).
(c) Confirm that the initialization has been completed.
END
System description
1. DESCRIPTION OF SYSTEM
(a) A tire pressure warning valve and transmitter is
equipped with a tire pressure sensor and a
transmitter and is installed in a tire wheel assembly.
The sensor measure ...
Registration
...
Other materials:
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspect Area"
column of the table. Check each symptom by checking the
suspected areas in the order they are listed ...
Installation
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1. INSTALL REAR AIRBAG SENSOR LH
Check that the ignition switch is off.
Check that the battery negative (-) terminal is
disconnected.
CAUTION:
...
Calling the message sender
Calls can be made to an e-mail/SMS/MMS message sender’s phone
number.
Display the message inbox screen.
Select the desired message.
Select .
Check that the “Call” screen is displayed.
Calling from a number within a message
Calls can be made to a number identified in a message ...
