Toyota Sienna Service Manual: Light Sensor Circuit Malfunction
DTC B1244 Light Sensor Circuit Malfunction
DESCRIPTION
This DTC is output when failure in the light sensor circuit is detected.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
B1244 |
|
|
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 AUTOMATIC LIGHT CONTROL SENSOR
- Measure voltage between the terminal 3 and the terminal 5 of the automatic light control sensor
Standard
4 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Measure voltage between the terminal B6-6 and the terminal B6-4 of the multiplex network body ECU in the instrument panel junction block assembly.
Voltage
REPLACE AUTOMATIC LIGHT CONTROL SENSOR
Diagnostic trouble code chart
1. DTC CHECK
If a malfunction code is displayed during the DTC check ,
check the suspected area listed for that code in the table
below, and proceed to the appropriate page.
DIAGNOSTIC TROUBLE COD ...
Ignition Switch Circuit
DESCRIPTION
The Multiplex network body ECU receives the ACC and IG signals from the
ignition switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the in ...
Other materials:
Erasing the entire HomeLink® memory (all three programs)
Press and hold down the 2 outside
buttons for 10 seconds until
the indicator light flashes.
If you sell your vehicle, be sure to
erase the programs stored in the
HomeLink® memory.
Before programming
Install a new battery in the transmitter.
The battery side of the transmitter must ...
Bulb locations
Front
Vehicles without daytime running lights or with bulb type daytime
running lights
Headlight high beam and daytime
running lights (if equipped)
Headlight low beam
(halogen bulb)
Fog light (if equipped)
Front turn signal/parking and
front side marker lights
Vehic ...
Removal
1. REMOVE ROOF DRIP SIDE FINISH MOULDING
Put protective tape around the roof drip side finish
moulding.
Using a remover for the roof moulding, disengage of
the clips both in the front and rear ends of the roof
drip side finish moulding and then remove the roof
drip side finish moul ...
