Toyota Sienna Service Manual: How to proceed with troubleshooting
1 VEHICLE BROUGHT TO WORKSHOP
2 INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
3 BASIC INSPECTION
- Turn the ignition switch ON.
- Check whether or not the radio receiver turns on.
Result
4 CHECK FOR DTC
- Check for DTCs and note any codes that are output.
- Delete the DTCs.
- Recheck for DTCs by simulating the operation indicated by the DTCs.
HINT:
- If the system cannot enter the diagnosis mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part.
- Even if the malfunction symptom is not confirmed, check the DTCs. This is because the system stores past DTCs.
- Check and clear past DTCs. Then check for DTCs.
Result
5 DIAGNOSTIC TROUBLE CODE CHART
Find the output code on the diagnostic trouble code chart
6 PROBLEM SYMPTOMS TABLE
Refer to the problem symptoms table
Result
7 OVERALL ANALYSIS AND TROUBLESHOOTING
- Terminals of ECU
8 ADJUST, REPAIR OR REPLACE
9 CONFIRMATION TEST
END
System diagram
1. DISC PLAYER OUTLINE
A CD player uses a laser pickup to read digital
signals recorded on CDs. By converting the digital
signals to analog, music and other content can be
played.
C ...
Identification of noise source
1. Radio Description
Radio frequency band
Radio broadcasts use the radio frequency bands
shown in the table below.
Service area
The service areas of A ...
Other materials:
Precaution
Keep in mind the following points when inspecting the
dynamic laser cruise control system.
As there is a limitation on the vehicle-to-vehicle distance
controlling capability, do not overly rely on the dynamic
laser cruise control system.
Do not neglect to pay constant attentio ...
Inspection
1. INSPECT FRONT STABILIZER LINK ASSEMBLY LH
(a) As shown in the illustration, flip the ball joint stud
back and forth 5 times, before installing the nut.
(b) Using a torque wrench, turn the nut continuously at
a rate of 2 to 4 seconds per 1 turn and take the
torque reading on the 5th tur ...
CAN Bus Line
DESCRIPTION
When any DTC for the CAN communication system is output, first measure the
resistance between the
terminals of the DLC3 to specify the trouble area, and check that there is no
short in the CAN main wire,
between the main wire, and +B or GND.
WIRING DIAGRAM
INSPECTION PRO ...