Toyota Sienna Service Manual: How to proceed with troubleshooting
HINT:
- Use these procedures to troubleshoot the power folding seat system.
- *: Use the intelligent tester.
1 VEHICLE BROUGHT TO WORKSHOP
2 INSPECT BATTERY VOLTAGE
Standard voltage: 10 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
3 PROBLEM SYMPTOMS TABLE
Result
4 OVERALL ANALYSIS AND TROUBLESHOOTING*
- Terminals of ECU
- On-vehicle Inspection
5 REPAIR OR REPLACE
6 CONFIRMATION TEST
END
System description
1. DESCRIPTION OF POWER REAR NO. 2 SEAT WITH
STOWING FUNCTION
A power rear no. 2 seat with stowing function has
been adopted for the third-row seats.
The power rear no. 2 seat wit ...
Initialization
HINT:
The seatback position is initialized at the factory before
shipment, so initialization is not normally required.
There is an initialization function for cases when
reinitializati ...
Other materials:
Sound Signal Circuit between Radio Receiver and Television Display
Assembly
DESCRIPTION
The television display assembly sends a sound signal to the radio receiver
through this circuit.
The sound signal that has been sent is amplified by the stereo component
amplifier or radio receiver
(built-in amplifier), and then is sent to the speakers.
If there is an open or ...
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to the ON position, the battery voltage is
applied to terminal IGSW of
the ECM. The ECM MREL output signal causes a current to flow to the coil,
closing the contacts of the EFI
relay and supplying power to terminal +B of the ECM.
If the igniti ...
Warning lights and
indicators
The warning lights and indicators on the instrument cluster and
center panel inform the driver of the status of the vehicle’s various
systems.
For the purpose of explanation, the following illustration displays
all warning lights and indicators illuminated.
Vehicles with monochrome displ ...
