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FT
CONTROL SYSTEM (FOR 2 . 3 ~ )
Terminal
Connected To
28
Coast clutch solenoid
(Output)
(CCS)
29
Transmission control
(Output)
switch (TCS)
30
Octane adjust
(Input)
-
--
Test Condition
- -
Specification
Remark
Possible Cause
O/D OFF llght ON
-4
B e l o :
O V
-
-----
I
Open or short from CCS
O/D OFF light OFF
I
-
to PCM
- -
-
--
- -
- -
Switch on
- -
Below
I OV
PIC) ON
. -
Open or short from TCS
Switch off
-pppp
1
PID OFF
PCM
-
Constant
1
ov
I
PID CLOSED
Disconnect shortlng bar.
Open circult.
/
Engine running and steering
31
Power steering
I
wheel turned
Open or short circuit from
(Output)
pressure swltch
Englne runnlng and steerlng
swltch to PCM
- -
-
-
- -
wheel not turned
--
-
32
-
-
-
-
-
- -
-
1
-
-
- -
- -
-
33
Vehlcle speed sensor
Constant
ov
Poor ground or open from
(Input)
(VSS) (-)
I
VSS to PCM
~-
-
- 4 -
-
- -
-
---
-
-
-
34
-
-
-
- -
--
- -
- -
-
- -
Key ON
35
Heated oxygen
Open or short from
(Input)
sensor-12 (rear)
*
1
sensor to PCM
temperature
Contamination
+
--
-
- -
-
-
-
-
-
- -
-
36
1
Mass air flow sensor
Constant
Poor connectton at PCM
(Input)
(MAF) return
- i - - -
-
- -
Open from MAF to PCM
-
__
-
-
I
Transmission fluid at
(
approx 3
ov
-
37
1
Transmlsslon fluid
amb~ent temperature
Open or short from TFT
temperature (TFT)
-
- -
+--
-
-
A
to PCM
sensor
Transmiss~on fluld at nor-
-
Transmlss~on overheat
rnal operating temperature
approx 1 1V
I
condit~on
Engine coolant
I
Engine at operating
38
1
temperature (ECT)
temperature
(Input)
1
sensor
I
I
Open or short from ECT
approx. 0.6V
I
PID 120-200°F
to PCM
39
Intake air temperature
Hot idle
-
-
-
-
--
1 7 v
-
--
- -
I
PID 50-1200F
Open or short from IAT to
(Input)
(IAT) sensor
Driving 48 kmih (30 mph)
1 7V
- 1
PCM
-
-
-
- -
- -
I
Drivinq 88 kmih (55 rnph)
\
i 8 V
-
1
-
-
- -
- -
-
- -
- -
-
-
-4
- -
- -
-
-
,
Engine off
Fuel pump mon~tor
+
- -
- - -
O v
PID OFF
Open or short from fuel
I
Engine running
PID ON
pump relay to PCM
I
AIC on
41
NC cycling switch
r-
-
-
1
AIC off
B+
I
PID ON
Open or short from switch
-
-
-
-
- -
-
PID OFF
PCM.
-
t
-
+
- - -
--
-
-
-
-
--
- -
-
-
-
-
42
-
-
-
- -
- 4 -
- -
+---____
-
-
-
- -
-
- -
-
43
-
-
-
-
-
- -
- +
- -
1
-
-
-
44
-
-
-
-
--
-
-
-
- -
- -
- -
-
-
--
-
-
- -
- -
- -
45
-
-
-
,
- -
-
-
-
-
-
-
-
-
-
-
-
46
-
-
-
-
-
--
- - -
- - -
-
.
47
EGR vacuum regulator
B+
- -
I
PID 0%
Open clrcurt from EVR
(Output)
(EVR) solenoid
1 O
-
B
+
V
~
o
~
solenold to PCM
-
kmih (55 mph)
1
9-113V
PID 35.50%
48
Clean tachometer
Key ON
(Output)
output to I P.
Engine running
Poor connection at PCM
or GND, or open circuit.
49
Transm~ssion range
I
sensor (TR3)
(Input)
----____
- -
Key ON
I
Hot Idle
Driving 48 kmih (30 mph)
I
7-
+---
4
I
Dr~vina 88 km/h (55 mohl
11.5V
TR sensor out of
adjustment.
Open or short from TR
sensor to PCM.
I
I
I
-
.
,
I
'1:
When catalyst monitor
is
on, voltage switches at 0.45V.
70UOFT-239
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Troubleshooting
