11
OUTLINE OF
TCCS - History of TCCS Engine Control Syste
m
HISTORY OF TCCS ENGINE CONTROL SYSTE
M
The ECU used for conventional EFI in export
models beginning in 1979 was the analog circuit
type, which controlled the injection volume
based on the time required for a capacitor to be
charged and discharged
.
The microcomputer-controlled type was added
beginning in 1981
. That was the beginning of the
engine
control system using
TCCS
. Now
,
however, the TCCS engine
control
system not
only
controls
EFI, but
also
ESA, which controls
ignition timing
; ISC, which
controls the idle
speed, and other such advanced systems
; as
well as the diagnostic,
fail-safe,
and back-up
functions
.
CYL
.
ARR
.
ENGINE MODELS
1980 1985 1990 199
5
K series
(
4K-E)
--
~
E series
(
3E-E) [2E-E, 4E-FE, 5E-FE
]
A series
(
4A-GE, 4AG-ZE
)
[4A-FE, 5A-FE, 7A-FE
]
L4
S series
(
2S-E
)
(1 S-i,
1S-E,
2S-E)
1
3S-FE, 5S-FE
,
3S-GE, 3S-GTE
]
R series
(
22R-E
)
(22R-TE) [22R-E]
~
Y series
(
3Y-E
)
[4Y-E
]
RZ series [1RZ-E, 2RZ-E, 2RZ-FE, 3RZ-FE
1
TZ series [2TZ-FE, 2TZ-FZE]
~
G series
(
1G-E)[1G-FE
]
(1G-GE)
-----
~
~
L6
M series (4M-E, 5M-E, 5M-GE
)
(5M-GE, 6M-GE, 7M-GE, 7M-GTE
)
JZ series
[2JZ-GE,
2JZ-GTE]
~
F series
(
3F-E)
~
FZ series [ 1 FZ-FE
]
V6
VZ series
(
2VZ-FE)[3VZ-E, 3VZ-FE, 5VZ-FE
]
MZ series [1 MZ-FE
]
V8
UZ series [1UZ-FE
]
INTAKE AIR SENSING DEVICE
S
Vane type air flow meter
-
Manifold pressure (vacuum) senso
r
Optical Karman vortex type air flow mete
r
Hot-wire type mass air flow meter
-
1
: No longer in production models
I I
: Current product models
---
~
: EFI (EFI control only
)
TCCS
(EFI, ESA, ISC, Diagnosis,
etc
)
6
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