Toyota Sienna Service Manual: 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 short of automatic light control sensor circuit occurs.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch 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:
2 CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR)
- Check for open or short circuit in the harness and the connector between the terminal 6 of the automatic light control sensor and the terminal B6-6 of the multiplex network body ECU.
- Check for open or short circuit in the harness and the connector between the terminal 3 of the automatic light control sensor and the terminal B6-4 of the multiplex network body ECU.
- Check for open or short circuit in the harness and the connector between the terminal 5 of the automatic light control sensor and the terminal B6-5 of the multiplex network body ECU
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Measure voltage between the terminal B6-4 and the terminal B6-6 of the multiplex network body ECU in the instrument panel junction block assembly.
Voltage
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Light Control Switch Circuit
DESCRIPTION
This circuit detects the state of the headlight dimmer switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
...
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 ...
Other materials:
Inspection
1. INSPECT SPEED SENSOR (NT SENSOR)
(a) Disconnect the speed sensor connector from the
transaxle.
(b) Measure the resistance according to the value(s) in
the table below.
AISIN made:
TOYOTA made:
2. INSPECT SPEED SENSOR (NC SENSOR)
(a) Disconnect the speed sensor connector from ...
Jam Protection Function Activates During Power Slide Door RH
Operation
DESCRIPTION
It may be caused by ill-fitting slide door, faulty touch sensor or
faulty pulse sensor.
The power slide door ECU activates the slide motor to open / close
the power slide door, thus
controlling the power slide door operation. For jam and foreign object
detect ...
Diagnosis system
1. DESCRIPTION
(a) Release the parking brake pedal.
(b) Check the warning lights.
When ignition switch is turned ON, check that the
ABS warning light and brake warning light come on
for 3 seconds.
HINT:
When parking brake is applied or the level of the
brake fluid is low, the bra ...
