Toyota Sienna Service Manual: Door Courtesy Switch Circuit
DESCRIPTION
The Multiplex network body ECU detects the condition of the door courtesy switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch to ON and push the intelligent tester main switch ON.
- Select the items below in the DATA LIST, and read the displays on the intelligent tester
BODY NO.1:
BACK DOOR:
2 INSPECT COURTESY LIGHT SWITCH
- Inspect each of the courtesy light switch continuity
3 INSPECT BACK DOOR LOCK ASSEMBLY
- Inspect the courtesy light switch terminal of the back door lock assembly
4 CHECK HARNESS AND CONNECTOR
- Disconnect the 1P, B7 and B9 connector from the instrument panel junction block assembly
- Check the resistance between each of the terminals of instrument panel junction block assembly connector side and body ground as shown in the chart below.
Resistance
5 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BACK DOOR COURTESY LIGHT SWITCH CIRCUIT)
- Measure voltage between the terminal B7-25 of the multiplex network body ECU and body ground.
Voltage
6 CONFIRM VEHICLE TYPE
- Check the vehicle models.
A: w/o Power back door
B: w/ Power back door
7 INSPECT POWER BACK DOOR SYSTEM
- Inspect the power back door circuit
REPAIR OR REPLACE HARNESS OR CONNECTOR
Automatic Light Control Sensor Circuit
DESCRIPTION
The Multiplex network body ECU receives the signal from the automatic light
control sensor.
HINT:
DTC code is output when malfunction of automatic light control sensor or open or
...
Door LOCK Position Circuit
DESCRIPTION
This circuit detects the state of the door lock detection sensor and send it
to the Multiplex network body
ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT T ...
Other materials:
Short in Front Passenger Side Squib Circuit
DTC B0105/53 Short in Front Passenger Side Squib Circuit
DESCRIPTION
The front passenger side squib circuit consists of the center airbag sensor
assembly and the front
passenger airbag assembly.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0105/53 is re ...
Installation
1. INSTALL BACK DOOR OUTSIDE GARNISH
Install the back door outside opener switch with the
2 screws.
Install the back door outside garnish with the 5 nuts
and a clip.
Connect the licence light connector.
2. INSTALL LH BACK-UP LIGHT ASSEMBLY (See page
LI-90)
3. INSTALL RH ...
On-vehicle inspection
1. INSPECT STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the steering pad installed on the vehicle,
perform a visual check. If there are any defects as
mentioned below, replace the steering pad with a
new one:
Cuts, minute cracks or ...
