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 B+ in Front Pretensioner Squib LH Circuit
DTC B0138/72 Short to B+ 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 B01 ...
Removal
1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE
HINT:
See page EM-26
2. SECURE ENGINE (See page EM-37)
3. REMOVE GENERATOR ASSEMBLY (See page CH-17)
4. REMOVE COMPRESSOR AND MAGNETIC CLUTCH
(See page AC-227)
5. REMOVE NO. 1 ENGINE FRONT MOUNTING
BRACKET LH (See page EM-42)
6. REMOVE NO. 2 IDLER PU ...
Yaw rate sensor check (when using sst check wire)
(a) Check the zero point voltage of the yaw rate sensor.
(1) Keep the vehicle in a stationary condition on a
level surface for 1 second or more.
(b) Check the output of the yaw rate sensor.
(1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 3 mph (5
...
