Toyota Sienna Service Manual: Terminals of ECU
1. CHECK POWER SLIDE DOOR ECU LH
- Disconnect the P25 and P26 ECU connectors, and check the voltage and 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 (Slide door LH)
*2 Power slide door control switch LH
*3 Transmitter switch (Slide door LH)
*4 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
- Slide door is open or power slide door system is activated to open
*5 When any condition listed below is met, the sounding warning buzzer stops.
- Shift lever is moved into P position
- Slide door is fully closed
*6 Terminal SEL is used for distinction between the power slide door ECU LH and RH. Only terminal SEL of the power slide door ECU LH is grounded.
HINT: Use an oscilloscope to check the output voltages of the power slide door main switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.
2. CHECK POWER SLIDE DOOR ECU RH
- Disconnect the P27 and P28 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 (Slide door RH)
*2 Power slide door control switch RH
*3 Transmitter switch (Slide door RH)
*4 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
- Slide door is open or power slide door system is activated to open
*5 When any condition listed below is met, the sounding warning buzzer stops.
- Shift lever is moved into P position
- Slide door is fully closed
HINT: Use an oscilloscope to check the output voltages of the power slide door main switch, buzzer and pulse sensor.
If the result is not as specified, the ECU may have a malfunction.
Problem symptoms table
POWER SLIDE DOOR SYSTEM
Symptom
Suspected Area
Power slide door LH does not operate when switch* is
pressed (* switch indicates satellite switch for power
slide 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:
Installation
1. INSTALL RACK & PINION POWER STEERING GEAR ASSEMBLY
(a) Install the power steering gear assembly with the 2
bolts and nuts.
Torque: 70 N*m (714 kgf*cm, 52 ft.*lbf)
2. CONNECT PRESSURE FEED TUBE ASSEMBLY
(a) Connect the pressure feed tube assembly to the
power steering gear asse ...
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptom. The likely causes of the problem are
indicated in descending order. Check each suspected area
in order. Repair or replace faulty parts or perform
adjustments as necessary.
Inspect the fuse and rel ...
Removal
1. REMOVE BACK DOOR GARNISH CENTER
2. REMOVE BACK DOOR SIDE GARNISH LH
3. REMOVE BACK DOOR SIDE GARNISH RH
4. REMOVE BACK DOOR STRAP COVER
5. REMOVE BACK DOOR PULL STRAP
6. REMOVE BACK DOOR TRIM BOARD ASSEMBLY
7. REMOVE BACK DOOR SERVICE HOLE PLATE
8. REMOVE REAR SPOILER COVER (W/ REAR
SPOIL ...
