Hyundai Sonata 1991 Shop Manual page 414

GENERAL
INSPECTION OF ELECTRONIC CONTROL SYSTEM COMPONENTS
Y45CTlA
Improper of
Based on the wiring diagram,
connection con-
1. Wiring
- check whether the continuity and
--I
No continuity
~
nector, damaged or discon-
grounding of each harness is OK.
nected harness, or incorrect
t
wiring connection.
Continuity
t
•
Reconnect the connector; repair
Normal
or replace the harness.
oil-temperature
the Replace
sensor.
I
con-I
t
•
Normal
Changes of the resistance
tinuous and smooth.
Vary the thermo-sensitive part from
low temperature to high temperature . . . ,
2. Oil-temperature . No continUity Damaged or disconnected wlr-
- and check the resistance between - ( . )
I-,
sensor . . . . resistance:
00
ing
the positive (+) and negative (-) sides
L . . - - - - - - - r - - - - - - - - l
of the connector terminal.
t
1: (+) side
2: (-) side
_____t _
Replace the TPS.
resistance between Resistance: Damaged or disconnected wir-
and
4
of the TPS. - high or infinite '-- ing
L...- ----,
---l
3.5-6.5 O/20
o
C (68°F)
_____t _
T
Check the resistance between
Resistance:
terminals 3 and 1 with the engine
more or less
~
Improper adjustment
I
.-
than 0.4
idling after throttle-valve opening
kilohm/20°C
T
warm-up.
(68°F)
I
Readjust the TPS installation.
I
•
Resistance (actual measurement)
between terminals 1 and 3:
approx. 0.4 kilohm/20°C (68°F)
3. Throttle- Check the
position sensor - terminals 1
(TPS)
1: ground
3: output
4: power supply
TPS terminal
I~I
LJ LJ
Poor contact
Replace the TPS.
Changes of
the resistance
are not contin-
uous.
j
Check for changes of the resis-
I
tance between terminals 1 and 3
Changes of the resistance con-
tinuous and smooth.
t
Normal
45-25