Toyota 4A-FE Repair Manual

Fl-34
EFI SYSTEM - Troubleshooting with Volt/Ohmmeter
TROUBLESHOOTING WITH
VOLT/OHMMETER
HINT: The following troubleshooting procedures
are designed
for inspection of each separate
system.
therefore the procedure may vary some-
what. However, troubleshooting should be per-
formed refering to the inspection methods
described in this manual.
Before beginning inspection,
it is best to first make
a
simple check of the fuses. fusible links and the
condition of the connectors.
The following troubleshooting procedures are
based on the supposition that the trouble lies in
either a short or open circuit in a component out-
side
the computer or short circuit within the com-
puter.
If engine trouble occurs even through proper
operating
voltage is detected in the computer con-
nector, then
it can be assumed that the ECU is
faulty and should be replaced.
LOCATION OF FUSES AND FUSIBLE LINKS
AE
FL
AM2
30A
FL
AM1
40A
FL
ALT
100A
Fuse
STOP
15A
LHD
Fuse EFI 1 5A
Fl5146

Toyota 4A-FE Specifications

General

Engine Type	Inline-4
Fuel System	EFI (Electronic Fuel Injection)
Valvetrain	DOHC, 4 valves per cylinder
Bore x Stroke	81.0 mm x 77.0 mm
Compression Ratio	9.5:1
Fuel Type	Gasoline
Displacement	1587 cm3
Power Output	115 hp (86 kW) @ 6000 rpm
Redline	6, 400–6, 800 rpm