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
...
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:
High Temperature
DTC 63-47 High Temperature
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
63-47
Sensor detects that CD unit temperature is high (Over
80C).
Radio and navigation assembly
INSPECTION PROCEDURE
HINT:
After the inspection is completed, c ...
Reassembly
1. Install lower radiator tank
(a) After checking that there are no foreign objects in
the lock plate groove, install a new O-ring without
twisting it.
HINT:
When cleaning the lock plate groove, lightly rub it
with sandpaper without scratching it.
(b) Tap the lock plate with a plastic ...
Dtc check / clear
Notice:All the stored dtcs and freeze frame data are
erased if:
1) the ecm is changed from normal mode to check mode
or vice versa; or 2) the ignition switch is turned from on
to acc or off while in check mode.
Before changing modes, always check and make a note
of any dt ...
