Toyota Sienna Service Manual: 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 P the seat cannot be operated.
If the ignition switch is in ACC or IG the seat cannot be operated.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
- Remove the fold seat control ECU with connectors still connected.
- Turn the ignition switch ON.
- Measure the voltage according to the value(s) in the table below.
Standard voltage: LH side
RH side
2 CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - PARK/NEUTRAL POSITION SWITCH)
- Disconnect the connector from the park/neutral position 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
3 INSPECT PARK/NEUTRAL POSITION SWITCH
- Remove the park/neutral position switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
4 CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)
- Measure the voltage according to the value(s) in the table below.
Standard voltage
REPLACE FOLD SEAT CONTROL ECU
On-vehicle inspection
1. CHECK POWER REAR NO. 2 SEAT with STOWING FUNCTION
Check the basic functions.
Operate the fold seat switch and power rear
No.2 seat switch and check to make sure each
seat ...
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 ...
Other materials:
Installation
1. INSTALL REAR AXLE HUB & BEARING ASSEMBLY LH
(a) Install the hub & Bearing assembly LH with the 4
bolts.
Torque: 56 N*m (571 kgf*cm, 41 ft.*lbf)
2. INSPECT BEARING BACKLASH (See page AH-16)
3. INSPECT AXLE HUB DEVIATION (See page AH-16)
4. CONNECT SKID CONTROL SENSOR WIRE
(a) Co ...
High mounted stop light assembly
COMPONENTS
REMOVAL
1. REMOVE BACK DOOR GARNISH CENTER (w/ Rear Spoiler)
2. REMOVE REAR SPOILER COVER (w/ Rear Spoiler)
3. REMOVE CENTER STOP LIGHT ASSEMBLY
w/o Rear spoiler:
Disconnect the connector and remove the 2
screws and the center stop light assembly.
...
How to proceed with
troubleshooting
HINT:
Troubleshoot in accordance with the procedures on the
following pages
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3 INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX
COMMUNICATION SYSTEM (BEAN)
Use the intelligent tester to check for normal ...
