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TOYOTA
TACOMA

228TA03

12
TOYOTA TACOMA -- OUTLINE OF NEW FEATURES 293
D The line pressure control using a linear sole-
TOYOTA TACOMA (SLT), which was adopted on the
noid valve
'02 Toyota Tundra with the 2UZ-FE engine,
has also been adopted on the '03 Toyota Taco-
OUTLINE OF NEW FEATURES ma with the 5VZ-FE engine. Accordingly, the
The following changes are made for the 2003 model shape of the valve body and the logic of the
year. ECM have been changed.
D The previous mechanical control, which con-
1. 2RZ-FE and 3RZ-FE Engine
sisted of a throttle cable, cam, and throttle
To comply with the OBD-II (On-Board Diagnosis valve, has been changed to an electronic control
II) regulations, all the DTC (Diagnostic Trouble system that uses a solenoid valve SLT.
Code) have been made to correspond to the SAE D The automatic transmission fluid of 3RZ-FE
controlled codes. For details, refer to 2003 Gener- and 5VZ-FE engine model has been changed
al Features section. from the D-II type ATF to the T-IV type ATF.
2. 5VZ-FE Engine 4. Brake
D The composition of the TWC (Three-Way Cat- D The ABS brake control system, which was op-
alytic Converter) has been changed to comply tional equipment on the '02 model, is now stan-
with the LEV (Low Emission Vehicle) and dard equipment on all models.
SFTP (Supplementary Federal Test Procedure)
emission regulations. D The brake actuator with skid control ECU has
been changed from the one made by Continen-
D The same link type ETCS-i (Electronic Throttle tal Teves on the '02 model to one made by AD-
Control System-intelligent) that is used on the VICS. However, the basic construction and op-
'03 Toyota Tundra with the 5VZ-FE engine has eration are the same as the '02 model.
been adopted on the models other than Sport
grade model. D In place of the pendulum type deceleration sen-
sor used previously in the ABS brake control
D To comply with the OBD-II (On-Board Diag- system of the 4WD and Prerunner models, a
nosis II) regulations, all the DTC (Diagnostic semiconductor type deceleration sensor has
Trouble Code) have been made to correspond been adopted.
to the SAE controlled codes. Some of the DTC
have been further divided into smaller detec- D The incremental type hydraulic auto adjuster
tion areas than in the past, and new DTC have to automatically adjust the clearance between
been assigned to them. For details, refer to 2003 the shoes and drum has been adopted on rear
General Features section. brake for 4WD and Prerunner models.

3. A340E and A340F Automatic
Transmission
294 TOYOTA TACOMA -- OUTLINE OF NEW FEATURES
CRS (Child Restrain System) lower anchorage for
5. Seat securing child seats is provided behind the seat
cushion of the front or rear seat

Lower Anchorage

228TA01
Double Cab Model Rear Seat
D On the models with the 5VZ-FE engine other
than Sport grade model, the cruise control has
been changed to one that is controlled by the
f : available : not available ETCS-i. Accordingly, the components of the
system have been changed as follows:
Front Seat Rear Seat
- Cruise control ECU is integrated in the ECM.
Reg- Ex- Dou Ex- Dou
- Cruise control actuator and control cable has
ular tra ble tra ble
Cab Cab Cab Cab Cab been discontinued.
- Throttle control motor, throttle position sen-
LH
f sor and accelerator pedal position sensor have
Side
been adopted.
RH
f f f
Side D The basic construction and operation are the
same as '03 Celica. For details, refer to page
6. Cruise Control System
76.

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