Toyota Sienna Service Manual: Terminals of ECU
1. COMBINATION METER ASSEMBLY
*1: with Power Rear No. 2 Seat with Stowing Function
*2: with Theft Deterrent System
- Waveform 1 (Reference) : Using an oscilloscope:
OK:
HINT: As vehicle speed increases, the cycle of the signal waveform narrows.
- Waveform 2 (Reference) : Using an oscilloscope:
OK:
2. ACCESSORY METER ASSEMBLY
3. COMBINATION METER INNER CIRCUIT
*1: for Optitron Meter, Power Rear No. 2 Seat with
Stowing Function
*2: for Optitron Meter, with Theft Deterrent System
*3: without VSC
*4: with VSC
Problem symptoms table
ENTIRE SYSTEM
METER GAUGES
WARNING LIGHTS
INDICATOR LIGHTS
BUZZER
ACCESSORY METER ASSEMBLY
...
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:
...
Other materials:
Removal
1. DISCONNECT BATTERY NEGATIVE TERMINAL
2. REMOVE FRONT DOOR SCUFF PLATE LH
3. REMOVE COWL SIDE TRIM BOARD LH
4. REMOVE INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY
LOWER LH (See page IP-6)
5. REMOVE REAR DOOR SCUFF PLATE RH
6. REMOVE REAR DOOR SCUFF PLATE LH
7. REMOVE FRONT SEAT ASSEMBLY LH
HI ...
System description
1. GENERAL DESCRIPTION
The power seat control system is equipped with the
following function:
The front seats are equipped with electric
adjuster slide, reclining, lifter, front vertical and
lumbar support adjustment functions.
The power seat control system (w ...
Slip Indicator Light Remains ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and
multiplex communications.
The SLIP indicator blinks during VSC and/or TRAC operation.
When the system fails, the SLIP indicator comes on to warn the driver.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
...
