Toyota Sienna Service Manual: Terminals of ECU
1. CHECK POWER BACK DOOR ECU
- Disconnect the P13 and P14 ECU connectors, and check the voltage or resistance of each terminal of the wire harness side connectors
If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the ECU connectors, and check the voltage of each terminal of the connectors.
*1 Satellite switch (Back door)
*2 Transmitter switch (Back door)
*3 When all the conditions listed below are met, the
warning buzzer sounds.
- Ignition switch is turned ON
- Shift lever is moved into any position except P position
- Back door is open or power back door system is activated to open
*4 When any condition listed below is met, the warning buzzer turns off.
- Shift lever is moved into P position
- Back door is fully closed
HINT: Use an oscilloscope to check the output voltages of the power back door main switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.
Problem symptoms table
POWER BACK DOOR SYSTEM
Symptom
Suspected Area
Power back door does not operate when switch* is
pressed (* Switch indicates the satellite switch for
power back door)
...
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.
NOTICE: ...
Other materials:
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 OPENING OPERATION
Conditions necessary for the power back door to
open:
Power back d ...
Power Slide Door RH does not Operate When Using Inside / Outside
Handle
DESCRIPTION
The inside / outside handles have the ability to control operation
of the power slide door. Pulling either
handle transmits a request signal to the power slide door ECU RH, which then
commands the power
slide door control motor and clutch to open / close the power sli ...
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.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
...
