Toyota Sienna Service Manual: Terminals of ECU
1. FOLD SEAT CONTROL ECU LH
- Disconnect the fold seat control ECU connectors.
- Measure the voltage and resistance 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 fold seat control ECU connectors.
- Measure the voltage of the connectors.
If the result is not as specified, the fold seat control ECU may have a malfunction.
2. FOLD SEAT CONTROL ECU RH
- Disconnect the fold seat control ECU connectors.
- Measure the voltage and resistance 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 fold seat control ECU connectors.
- Measure the voltage of the connectors.
If the result is not as specified, the fold seat control ECU may have a malfunction.
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspect Area"
co ...
Diagnosis system
1. CHECK DLC3
The vehicle uses ISO 15765-4 communication
protocol.
The terminal arrangement of the DLC3 complies
with SAE 1962 and matched the ISO 15765-4
format.
If the resul ...
Other materials:
Removal
1. REMOVE BATTERY
2. REMOVE AIR CLEANER ASSEMBLY
HINT:
(See page EM-26)
3. SEPARATE TRANSMISSION CONTROL CABLE ASSEMBLY
(a) Remove the nut from the control shaft lever.
(b) Disconnect the control cable from the control shaft
lever.
(c) Remove the clip and disconnect the control cab ...
Front Airbag Sensor LH Circuit Malfunction
DTC B1149/37 Front Airbag Sensor LH Circuit Malfunction
DESCRIPTION
The front airbag sensor LH circuit consists of the center airbag sensor
assembly and front airbag sensor
LH.
If the center airbag sensor assembly receives signals from the front airbag
sensor LH, it judges whether or
not ...
Diagnostic trouble code chart
HINT:
If a trouble code is displayed during the DTC check, check
the circuit indicated by the DTC. For details of each code,
turn to the page for the respective DTC Code. in the DTC
chart.
Inspect the fuse and relay before investigating the trouble
areas as shown in the table below.
...
