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:
Setting the vehicle speed
Press the “ON-OFF” button to
activate the cruise control.
Cruise control indicator will come
on*1 or will be displayed on the
multi-information display*2.
Press the button again to deactivate
the cruise control.
Accelerate or decelerate the
vehicle to the desired s ...
SRS Warning Light Remains ON
DESCRIPTION
The SRS warning light is located on the combination meter assembly.
When the SRS is normal, the SRS warning light comes on for approximately 6
seconds after the ignition
switch is turned from the LOCK position to ON position, and then goes off
automatically.
If there is a mal ...
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptom. The likely causes of the problem are
indicated in descending order. Check each suspected area
in order. Repair or replace faulty parts or perform
adjustments as necessary.
Inspect the fuse and rel ...
