Toyota Sienna Service Manual: Back Door Courtesy Switch Circuit
DESCRIPTION
The fold seat control ECU receives signals from the back door courtesy switch and detects the state of the back door (open/close). If the ECU does not detect that the back door is open, the seat stowing and return functions are not available.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
- Remove the fold seat control ECU with connectors still connected.
- Measure the voltage according to the value(s) in the table below.
Standard voltage LH side
RH side
2 INSPECT BACK DOOR COURTESY SWITCH
- Disconnect the connector from the back door courtesy switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
3 CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - BACK DOOR COURTESY SWITCH)
- Disconnect the connectors from the fold seat control ECU.
- Measure the resistance according to the value(s) in the table below.
Standard resistance LH side
RH side
4 CHECK HARNESS AND CONNECTOR (BACK DOOR COURTESY SWITCH - BODY GROUND)
- Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE FOLD SEAT CONTROL ECU
Park / Neutral Position Switch Circuit
DESCRIPTION
The fold seat control ECU receives signals from the Park/Neutral position
switch and controls the seat
stowing and return operations. If the shift lever is in any position other than
...
Indicator Circuit
DESCRIPTION
This system has two indicator lights. One of the indicator lights is built
into the fold seat switch. This
indicator light receives power from the fold seat control ECU. It comes on or ...
Other materials:
Short to GND in Front Pretensioner Squib LH
Circuit
DTC B0137/71 Short to GND in Front Pretensioner Squib LH
Circuit
DESCRIPTION
The front pretensioner squib LH circuit consists of the center airbag sensor
assembly and the front seat
outer belt assembly LH.
This circuit instructs the SRS to deploy when deployment conditions are met.
DTC B ...
Precaution
Caution:
The vehicle is equipped with a supplemental restraint
system (srs). It consists of a driver airbag, front
passenger airbag, front seat side airbag, curtain shield
airbag, and front seat belt pretensioner. Failure to
carry out service operations in the correct sequ ...
ON / OFF Indication Parameter Error
DTC 01-E2 ON / OFF Indication Parameter Error
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
01-E2
The signal for ON/OFF control from the master device
has a problem
Radio and navigation assembly
INSPECTION PROCEDURE
HINT:
After the insp ...
