Toyota Sienna Service Manual: How to proceed with troubleshooting
1 VEHICLE BROUGHT TO WORK SHOP
2 CUSTOMER PROBLEM ANALYSIS
3 CHECK BODY MULTIPLEX COMMUNICATION SYSTEM
- Check for the DTC outputs.
4 DTC CHECK
5 DTC CHART
6 PROBLEM SYMPTOMS TABLE
7 TERMINAL OF ECU
8 CIRCUIT INSPECTION
9 IDENTIFICATION OF PROBLEM
10 REPAIR OR REPLACE
11 CONFIRMATION TEST
END
Parts location
...
Operation check
1. ILLUMINATED ENTRY SYSTEM OPERATION CHECK
The illuminated entry system is explained below:
Turn the ignition switch OFF, close all the doors,
and set them in the lock conditi ...
Other materials:
No Sound can be Heard from Speakers
INSPECTION PROCEDURE
1 CHECK AUDIO SETTINGS
Enter the sound adjustment screen by pressing the
"SOUND" switch on the AUDIO display.
Set volume, fader, and balance to the initial values and
check that sound is normal.
OK:
Audio system returns to normal.
HINT:
Sou ...
Diagnosis system
1. CHECK DLC3
The ECU uses the ISO 15765-4 for communication
protocol. The terminal arrangement of the DLC3
complies with SAE J1962 and matches the ISO
15765-4 format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
opera ...
Removal
1. Remove rear wheel
2. Remove skid control sensor wire (for 2wd)
Hint:
(see page sp-38)
hint:
disconnect the rh side by the same procedures as the
lh side.
3. SEPARATE SPEED SENSOR REAR LH (for 4WD)
HINT:
(See page SP-38)
4. SEPARATE SPEED SENSOR REAR RH (for 4WD)
HINT:
Separate the RH ...
