Toyota Sienna Service Manual: How to proceed with troubleshooting
HINT: Troubleshoot in accordance with the procedures on the following pages.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3 INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)
- Use the intelligent tester to check for normal function of the multiplex communication system.
- (ECU unconnected, communication line malfunctioning) Without code outputs, proceed to A.
- (ECU unconnected, communication line malfunctioning) With code outputs, proceed to B.
4 DTC CHECK
- Check for a diagnostic trouble code.
- Without code outputs, proceed to A.
- With code outputs, proceed to B.
5 PROBLEM SYMPTOMS TABLE
- When problem is not listed on problem symptoms table, proceed to A.
- When problem is listed on problem symptoms table, proceed to B.
6 PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
- Data List / Active Test .
- Operation check .
- Inspection.
- Terminals of ECU
7 ADJUST, REPAIR OR REPLACE
8 RESET POWER BACK DOOR SYSTEM
9 CONFIRMATION TEST
END
Power back door system
PARTS LOCATION
...
Operation check
NOTICE: Inspection should be started after conforming that
the items listed in the "CUSTOMIZE PARAMETER" for the power back door system
have defaulted to the initial settings
1. CHECK ...
Other materials:
Front Airbag Sensor LH Circuit Malfunction
DTC B1149/37 Front Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The front airbag sensor LH circuit consists of the center airbag sensor
assembly and front airbag sensor
LH.
If the center airbag sensor assembly receives signals from the front airbag
sensor LH, it judges whether or
not ...
Components
REMOVAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE FRONT BUMPER ASSEMBLY
3. REMOVE FOG LIGHT ASSEMBLY
Disengage the 2 claws
Disengage the 2 pins and remove the fog light
assembly.
DISASSEMBLY
1. REMOVE FOG LIGHT BULB
Turn in the dir ...
Canceling the power back door system (vehicles with power
back door)
Turn the main switch off to disable
the power back door system.
Off
On*
*: The orange line at the top of the
switch indicates that the power
back door system is on.
Luggage compartment light
The luggage compartment light turns on
when the back door is opened with the
luggage ...
