1. DTC CHECK/CLEAR (WHEN USING SST CHECK WIRE):

(a) DTC check
(1) Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040
(2) Turn the ignition switch to the ON position.
(3) Read the DTCs from the ABS warning light on the combination meter.
HINT:
If no code appears, inspect the TC and CG
terminal circuit and the ABS warning light circuit.
(4) As an example, refer to the chart below for the blinking patterns of the normal system code and trouble codes 11 and 21.

(5) The codes are explained in the code table (See page BC-14).
(6) After completing the check, disconnect terminals TC and CG of the DLC3, and turn off the display.
If 2 or more DTCs are detected at the same time, the DTCs will be displayed in ascending order.
(b) DTC clear

(1) Using SST, connect terminals TC and CG of the DLC3.
SST 09843-18040 (2) Turn the ignition switch to the ON position.

3) Clear the DTCs stored in the ECU by depressing the brake pedal 8 times or more within 5 seconds.
(4) Check that the warning light indicates the normal system code.
(5) Remove the SST from the terminals of the DLC3.
HINT: Clearing the DTCs cannot be performed by removing the battery cable.
2. DTC CHECK/CLEAR (WHEN USING INTELLIGENT TESTER):

(a) DTC check
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Read the DTCs by following the prompts on the tester screen.
(b) DTC clear
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Operate the intelligent tester to clear the codes.
HINT: Refer to the intelligent tester operator's manual for further details.
3. END OF DTC CHECK/CLEAR
(a) Turn the ignition switch to the ON position.
(b) Check that the ABS warning light goes off within approximately 3 seconds.
Diagnosis system
Freeze frame dataWhen servicing full-time 4wd vehicles
The full-time 4WD SIENNA is equipped with the open
center differential system.
If incorrect preparations or test procedures are used, the
test will not only be unsuccessful, but may be dangerous
as well.
Therefore, before beginning any such servicing or test,
be sure to check the following ...
Radiator
COMPONENTS
...
Basic inspection
(a) WHEN MEASURING RESISTANCE OF
ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance
measurements should be made at an ambient
temperature of 20°C (68°F). Resistance
measurements may be inaccurate if measured
at high temperatures, i.e. immediately after the
vehicle has been running ...