Toyota Sienna Service Manual: Low Battery Positive Voltage
DTC C1241/41 Low Battery Positive Voltage
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT ECU-IG FUSE
(a) Remove the ECU-IG fuse from the driver side J/B.
(b) Check continuity of the ECU-IG fuse.
Standard resistance
2 CHECK BATTERY
(a) Check the positive battery voltage.
Standard voltage: 11 to 14 V
3 INSPECT SKID CONTROL ECU (IG1 TERMINAL)
(a) WHEN USING INTELLIGENT TESTER: (1) Connect the intelligent tester to the DLC3.
(2) Start the engine.
(3) Select the DATA LIST mode on the intelligent tester.
ABS / VSC:
(4) Check that the voltage condition output from the ECU displayed on the intelligent tester.
OK: "Normal" is displayed.
(b) WHEN NOT USING INTELLIGENT TESTER: (1) Disconnect the skid control ECU connector.
(2) Turn the ignition switch to the ON position.
(3) Measure the voltage according to the value(s) in the table below.
Standard voltage 
NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).
REPLACE BRAKE ACTUATOR ASSEMBLY
4 INSPECT SKID CONTROL ECU (GND TERMINAL)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)
Stuck in Deceleration Sensor
DESCRIPTION
The yaw rate sensor and deceleration sensor signal is sent to the skid
control ECU through the CAN
communication system. When there is a malfunction in the communication, it will
...
Master Cylinder Pressure Sensor Malfunction
DTC C1246/46 Master Cylinder Pressure Sensor Malfunction
DESCRIPTION
Master cylinder pressure sensor is connected to the skid control ECU in the
actuator.
INSPECTION PROCEDURE
1 READ VALUE O ...
Other materials:
Initialization
1. ZERO POINT CALIBRATION
NOTICE:
Make sure that the front passenger seat is not
occupied before performing the operation.
HINT:
Perform the zero point calibration and sensitivity check if
any of the following conditions occur.
The occupant classification ECU is replaced.
A ...
On-vehicle inspection
1. CONNECT INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and run at idle.
(c) Select the ACTIVE TEST mode on the intelligent
tester.
HINT:
Please refer to the intelligent tester operator's
manual for further details.
2. INSPECT ACTUATOR MOTOR ...
Correct use of the seat belts
Extend the shoulder belt so that
it comes fully over the shoulder,
but does not come into contact
with the neck or slide off the
shoulder.
Position the lap belt as low as
possible over the hips.
Adjust the position of the seatback.
Sit up straight and well
back in the seat.
...
