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Toyota 4A-FE Repair Manual

Toyota 4A-FE
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·'.
EFI
SYSTEM
- Electronic
Control
System
Fl-147
[][]
Ohmmeter
r
?:
HT
Fl2489
Fl4263
3.
INSPECT
HEATER
COIL
RESISTANCE
OF
OXYGEN
SENSOR
Using
an
ohmmeter,
measure
the
resistance between
the
terminals
+B
and HT.
Resistance:
5.1 -
6.3
0
If
the
resistance is
not
as
specified, replace
the
sensor.
Engine ECU
INSPECTION
OF ECU
HINT:
The
EFI
circuit
can be checked by measuring
the
resistance and
voltage
at
the
wiring
connectors
of
the
ECU.
1.
PREPARATION
(See
page
Fl-36)
2.
INSPECT
VOLTAGE
OF
ENGINE
ECU
Check
the
voltage
between
each terminal
of
the
wiring
connectors.
•
Turn
the
ignition
switch
ON.
•
Measure
the
voltage
at
each
terminal
HINT:
•
Perform
all
voltage
measurements
with
the
connec-
tors
connected.
•
Verify
that
the
battery
voltage
is
11 V
or
more
when
the
ignition
switch
is
ON
position.

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Toyota 4A-FE Specifications

General IconGeneral
Engine TypeInline-4
Fuel SystemEFI (Electronic Fuel Injection)
ValvetrainDOHC, 4 valves per cylinder
Bore x Stroke81.0 mm x 77.0 mm
Compression Ratio9.5:1
Fuel TypeGasoline
Displacement1587 cm3
Power Output115 hp (86 kW) @ 6000 rpm
Redline6, 400–6, 800 rpm

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