Toyota Sienna Service Manual: Terminals of ECU
1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
- Disconnect the 1C, 1J, 1L, 1K, 1P, B6, B7 and B9 J/ B connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
Standard
HINT:
- If the result is not as specified, there may be a malfunction on the wire harness side.
- *1: w/o Power back door
- Reconnect the J/B and ECU connectors and measure the voltage according to the value(s) in the table below.
Standard voltage
HINT:
- *1: w/o Power Back Door
- Use an oscilloscope to check the output voltages of terminals LSWD, LSWP, LSWL and LSWR.
- If the result is not as specified, the J/B (body ECU) may have a malfunction.
2. CHECK POWER BACK DOOR ECU (w/ Power back door system)
- Disconnect the P13 and P14 ECU connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
Standard
HINT: If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the ECU connectors and measure the voltage according to the value(s) in the table below.
Standard voltage
HINT: If the result is not as specified, the ECU may have a malfunction.
Problem symptoms table
HINT:
Inspect the fuse and relay before investigating the suspected
areas shown in the table below.
POWER DOOR LOCK CONTROL SYSTEM
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Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format.
...
Other materials:
Operation check
1. NOTICE WHEN CHECKING THE FOLLOWING
Power door lock/unlock function:
The wireless door lock control function operates
only when the following 3 conditions are met:
No key is inserted in the ignition key cylinder.
All the doors are closed.
The power door lock sys ...
System description
1. GENERAL
In conjunction with impact absorbing structure for a
frontal collision, the SRS (Supplemental Restraint
System) driver airbag and front passenger airbag
were designed to supplement seat belts in the event
of a frontal collision in order to help reduce shock to
the head and c ...
Installation
1. INSTALL VENTILATION VALVE
(a) Install the ventilation valve.
(1) Apply adhesive to 2 or 3 threads.
Adhesive:
Part No. 08833-00070, Three Bond 1324 or
equivalent
(2) Install the ventilation valve.
Torque: 27 N*m (275 kgf*cm, 20 ft.*lbf)
2. CONNECT VENTILATION HOSE
(a) Connect ...
