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:
Installation
1. INSTALL LOWER BALL JOINT ASSEMBLY FRONT LH
(a) Install the lower ball joint assembly front LH and
tighten the nut.
Torque: 123 N*m (1,250 kgf*cm, 91 ft.*lbf)
(b) Install a new cotter pin.
NOTICE:
If the holes for the cotter pin are not aligned,
tighten the nut further up to 60°.
2. INS ...
Check and replace ecu
NOTICE: • The connector should not be disconnected from
the ECU. Perform the inspection from the
backside of the connector on the wire harness
side.
• When no measuring condition is specified,
perform the inspection with the engine stopped
and the ignition switch on.
• Che ...
Camshaft Position "A" - Timing Over-Advanced
DTC P0011 Camshaft Position "A" - Timing Over-Advanced
or System Performance (Bank 1)
DTC P0012 Camshaft Position "A" - Timing Over-Retarded
(Bank 1)
DTC P0021 Camshaft Position "A" - Timing Over-Advanced
or System Performance (Bank 2)
DTC P0022 Camshaft Position ...
