Toyota Sienna Service Manual: For vehicles equipped with traction control (trac) system
When using a 2-wheel drum tester such as a speedometer tester or chassis dynamometer, etc., or jacking up the front wheels and driving the wheels, always push in the TRAC cut ("TRAC OFF") switch and turn the TRAC system OFF.
FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TRAC) SYSTEM
(a) Confirm TRAC system is OFF
(1) Press the TRAC cut ("TRAC OFF") switch.
(2) Check that the TRAC OFF indicator light comes on when the TRAC system is turned OFF by the TRAC cut switch.
HINT:
The SLIP indicator light should always operate right after the engine is restarted.
(3) Begin measurements.
(4) Press the TRAC cut switch to turn the TRAC to the operative mode and check that the TRAC OFF indicator light goes off.
HINT: The SLIP indicator light blinks when the TRAC system in operating.
The SLIP indicator light should always operate right after the engine is
restarted.
When 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
...
For vehicles equipped with vehicle stability control (vsc) system
(a) Notices when using drum tester
Notices when using drum tester.
(1) When using a drum tester, be sure to start the
engine with the ignition switch OFF, and connect
SST to the terminals TS ...
Other materials:
Pressure Control Solenoid "A" Electrical (Shift
Solenoid Valve SL1)
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF"
operation of the shift solenoid
valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or
short circuit occurs in
either of the shift solenoid valves, the ECM cont ...
Brake Warning Light Remains ON
DESCRIPTION
The BRAKE warning light comes on when the brake fluid is insufficient, the
parking brake is applied or the
EBD is defective.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
When releasing the parking brake, move the shift lever into the P position in an
AT vehicle, and choke in
...
Removal
1. REMOVE BATTERY
2. REMOVE AIR CLEANER ASSEMBLY
HINT:
(See page EM-26)
3. SEPARATE TRANSMISSION CONTROL CABLE ASSEMBLY
(a) Remove the nut from the control shaft lever.
(b) Disconnect the control cable from the control shaft
lever.
(c) Remove the clip and disconnect the control cab ...
