Equus 3145 - Digital Ford Code Reader (1981 - 1995) - Manual (Page 3)

You Can Do It!
ii
1 Plug It In
• Ensure ignition is off.
• Plug Code Reader into test
connector (test connector is
usually found under the
hood).
2 Read Fault Codes
• Turn on ignition. DO NOT
START ENGINE.
• Turn Code Reader ON.
• Press TEST/HOLD button
and read codes.
3 Pinpoint Problem Areas
• Locate fault code(s) in the
appropriate Code Definition
List.
MEMORY
ON / OFF TEST / HOLD
LINCOLN
MERCURY
hicl es 1981 to 1995
MEMORY ON / OFF
TEST / HOLD
O
ieving
Co
DE DEFINITION
or Crankshaft sensor - circuit proble
ms
nj ector
circuit
is not working
properly
-
sib
le blown fuel injector fuse
Ig nition
system
fault
- Intermittent
7X signal
or
loss of 58X signal or 6X signal (Saturn)
Throttle
position
sensor
(TPS)
- signal
voltage
is
high during engine idle or deceleration
22
Throttle
position
sensor
(TPS)
- signal
voltage
is
low during engine idle
Fuel
cutoff
relay
circuit
- open
or shorted
t
ground
23
Manifold
air temperature
(MAT)
sensor
voltage is low or high
Throttle position sensor (TPS) erro
r
Mixture
Control
(M/C)
solenoi
d
circuit problems
Intake Air Temperature
Se
hicle
speed
sensor
(VS
lem
s
d air te
m
ow
This is a brief introduction only. Read this manual
for a complete description of the Code Reader and
its proper operation.