Toyota Sienna Service Manual: Terminals of ECU
1. CHECK POWER SLIDE DOOR ECU LH (WITH POWER SLIDE DOOR)
- 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.
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 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.
If the result is not as specified, the ECU may have a malfunction.
3. CHECK SLIDE DOOR CLOSER RELAY LH (WITHOUT POWER SLIDE DOOR)
- Disconnect the S37 relay connector, 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 relay connector, and check the voltage of each terminal of the connectors.
If the result is not as specified, the relay may have a malfunction.
Problem symptoms table
SLIDE DOOR CLOSER SYSTEM
Symptom
Suspected Area
Slide door closer LH does not operate (*1)
ECU-B fuse
Power slide door lock assembly LH
Power slide do ...
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.
NOT ...
Other materials:
Disassembly
1. REMOVE REAR NO. 2 SEAT COVER BEZEL
Remove the 5 screws.
Disengage the 5 claws and remove the rear No. 2
seat cover bezel.
2. REMOVE REAR SEAT RECLINING COVER LH
Remove the 2 screws.
Disengage the claw and remove the rear seat
reclining cover LH.
...
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptoms. The potential causes of the symptoms
are listed in order of probability in the ''Suspected Area''
column of the table. Check each symptom by checking the
suspected areas in the order they are listed. Rep ...
Magnetic clutch relay
ON-VEHICLE INSPECTION
1. INSPECT MAGNETIC CLUTCH RELAY
(a) Remove the magnetic clutch relay.
(b) Measure the resistance according to the value(s) in
the table below.
Standard resistance
If the resistance is not as specified, replace the
magnetic clutch relay. ...
