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:
Installation
1. INSTALL BACK DOOR OUTSIDE GARNISH
Install the back door outside opener switch with the
2 screws.
Install the back door outside garnish with the 5 nuts
and a clip.
Connect the licence light connector.
2. INSTALL LH BACK-UP LIGHT ASSEMBLY (See page
LI-90)
3. INSTALL RH ...
Cranking Holding Function Circuit
DESCRIPTION
The system detects the ignition switch's starting signal (STSW) and then
supplies current to the starter
until the ECM judges that the engine has started successfully. The purpose is to
reduce the holding time
of the ignition key.
WIRING DIAGRAM
Refer to DTC P0617.
INSPECTI ...
Removal
1. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY
Push the right side wall and then push the left wall
to release the stoppers.
Pull the glove compartment door sub-assembly
rearward to remove it.
2. REMOVE NO. 2 INSTRUMENT PANEL BOX
Disengage the 2 claws and 4 cl ...
