1991 MITSUBISHI ECLIPSE ignition

21-178AUTOMATIC TRANSAXLE - Troubleshooting
09P0010Fluid level must be
within this range.09PoOll
0”
Two302
DIAGNOSIS AND TEST
FLUID LEVEL AND CONDITION1. Drive until the fluid temperature reaches the usual tem-
perature
[70-80°C (160- 18O”F)I.2. Place vehicle on level floor.
3. Move selector lever sequentially to every position to fill
torque converter and hydraulic circuit with fluid, then place
lever in “N” Neutral position. This operation is necessary tobe sure that fluid level check is accurate.
4. Before removing dipstick, wipe all dirt from area around
dipstick. Then take out the dipstick and check the conditionof the fluid.
The transaxle should be overhauled under the following
conditions.l If there is a “burning” odor.
l If the fluid color has become noticeably blacker.
lIf there is a noticeably great amount of metal particles inthe fluid.
5.Check to see if fluid level is in “HOT” range on dipstick. If
fluid level is low, add automatic transaxle fluid until level
reaches “HOT” range.
Low fluid level can cause a variety of conditions because itallows pump to take in air along with fluid. Air trapped in
hydraulic circuit forms bubbles which make fluid spongy.
Therefore, pressures will be erratic.
Improper filling can also raise fluid level too high. When
transaxle has too much fluid, gears churn up foam and
cause same conditions which occur with low fluid level,
resulting in accelerated deterioration of automatic transaxle
fluid.In either case, air bubbles can cause overheating, fluid
oxidation, which can interfere with normal valve, clutch,
and servo operation. Foaming can also result in fluid
escaping from transaxle vent where it may be mistaken for
a leak.
6. Be sure to examine fluid on dipstick closely.
CONTROL CABLE
Whether control cable is properly adjusted can be confirmed bychecking whether inhibitor switch is performing well.
1. Apply parking brakes and service brakes securely.
2. Place selector lever to “R” range.
3. Set ignition key to “ST” position.
4. Slowly move the selector lever upward until it clicks as it
fits in notch of “P” range. If starter motor operates when
lever makes a click, “P” position is correct.
5.Then slowly move selector lever to “N” range by the same
procedure as in foregoing paragraph. If starter motor
operates when selector lever fits in “N”, “N” position is
correct.6. Also check to be sure the vehicle doesn’t begin to move
and the lever doesn’t stop between P-R-N-D.
7. The control cable is properly adjusted if, as described
above, the starter motor starts at both the “P” range and
the “N” range.

AUTOMATIC TRANSAXLE - Troubleshooting21-179
@: ELC-4PJT
@I: Diagnosis control
0: Ground
16R1336
OBTAINING FAULT CODES(1) Connect the voltmeter to the connector for diagnosis.
(2) Read the output fault codes.
Then follow the remedy procedures according to the
“FAULT
CODE DESCRIPTION” on the following page.
NOTEl As many as a maximum of
terr fault codes, in the
sequence of occurrence, can be stored in the Random
Access Memory (RAM) incorporated within the control
unit.l If the number of stored fault codes or fault patterns
exceeds ten, already stored fault codes will be erased,
in sequence beginning with the oldest.
l Do not disconnect the battery until all fault codes or
fault patterns have been read out, because all stored
fault codes or fault patterns will be canceled when the
battery is disconnected.
(3) If the fail-safe system is activated and the transaxle is
locked in
3rd gear, the fault code in the Fail-Safe Code
Description will be stored in the RAM.
Three of these fault codes can be stored.
(4) The
cancelation will occur if, with the transaxle locked in
3rd gear, the ignition key is turned to the OFF position, but
the fault code is stored in the RAM.

21480AUTOMATIC TRANSAXLE - Troubleshootina
FAULT CODE DESCRIPTION
Code
No.Output patternDescription
Remedy
11Abnormal increase of TPS outputl Check the throttle position sensor
nconnector.
l Check the throttle position sensoritself.
12l Adjust the throttle position sensor.
Abnormal decrease of TPS outputl Check the accelerator switch
(Code No. 24output
or not).Malfunction of the throttle-
position sensor or incorrect
adjustment
Damaged or disconnected wiringl Check the oil temperature sensorof low oil temperature sensor
connector.
l Check the oil temperature sensoritself.
16Short circuit of high oil tempera-ture sensor
Damaged or disconnected wiring
of high oil temperature sensor orshort-circuit of low oil tempera-
ture sensor
21
n
Damaged or disconnected wiringl Check the kickdown servo switchof the kickdown servo switch
connector.l Check the kickdown servo switch
itself.
22
nnShort circuit of the kickdown
ser-vo switch
23Damaged or disconnected wiringl Check the ignition pulse signal line.
of the ignition pulse pick-up cable24
Short circuit of the acceleratorswitch or improper adjustmentl Check the accelerator switch con-
nectar.l Check the accelerator switch itself.
l Adjust the accelerator switch.
31
u’u I n
Damaged or disconnected wiring
of the pulse generator AlCheck the pulse generator A and
pulse generator B themselves.l Check the vehicle speed reed
switch (for chattering).32
Damaged or disconnected wiring
uuLnJ-l-of the pulse generator B
12A0104
12A0107

AUTOMATIC TRANSAXLE - Troubleshooting214%3
TRANSAXLE CONTROL UNIT
-‘” .The 42 pin connector is for increased sensor input. Terminal
layout for the 42 pin connector is as shown below.TFA0360
101.Damper clutch control solenoid valve
102.Shift control solenoid valve A
103.Oil temperature warning light 104. Power supply
105. Ground
106.Pressure control solenoid valve
107.Shift control solenoid valve B108.
-
109. Power supply
110. Ground
1. GroundL.
-
3.Accelerator switch
4.-5. Diagnosis output terminal
6. Air conditioner relay signal
7.-8. Diagnosis control terminal
9.-
IO. Power supply (Backup)
11. Kickdown servo switch
12.-
13.-14. Oil temperature sensor
15.High oil temperature sensor
16. Throttle position sensor
17.Sensor ground18. Vehicle speed reed switch
51. Inhibitor switch (PI52. Inhibitor switch
(8)53. Inhibitor switch
(N)54. Inhibitor switch
(D)
55. Inhibitor switch (2)56. inhibitor switch
(L)
57.Overdrive switch
58. Pulse generator
B59. Pulse generator
B60. Pulse generator A
61. Pulse generator A
62.Ground63.Ignition pulse64. Power mode signal

21-202AUTOMATIC TRANSAXLE - Troubleshooting
CONVERTER STALL TESTStall test consist of determining maximum engine
speed obtained at full throttle in “D” and “R”
positions. This test checks torque converter stator
overrunning clutch operation, and holding ability of
transaxle clutches and low-reserve brake.
CautionDuring this test, make sure that no one stand in
front of or behind vehicle.
1. Check transaxle fluid level. Fluid should be at
normal operating temperature
[70-80°C (160-
18O”F)]. Engine coolant should also be at normaloperating temperature
[80-90°C (180- 19O”F)l.2. Apply chocks to both rear wheels.
3. Attach engine tachometer.
4. Apply parking and service brakes fully.
5. Start engine.
6. With selector lever in “D” position, depress
accelerator pedal fully to read engine maximum
rpm. Do not hold throttle wide open any longer
than is necessary to obtain maximum engine
rpm reading, and never longer than 5 seconds ata time. If more than one stall test is required,
operate engine at approximatey 1,000 rpm in
neutral for 2 minutes to cool transaxle fluid
between tests.
Stall speed:
1,800-3,200 rpm
TRANSAXLE CONTROL7. Place selector lever to “R” position and perform
?+stall test by the same procedure as in foregoing
-,
item.Stall Speed Above Specification in “D”
If stall speed is higher than specification, rear clutchor overrunning clutch of transaxle is slipping. In this
case, perform hydraulic test to locate cause of
slippage.Stall Speed Above Specifjcation in “R”
If stall speed is higher than specification, front
clutch of transaxle or low-reverse brake is slipping.
In this case, perform hydraulic test to locate cause
of slippage.
Stall Speed Below Specification in “D” and “R”
If stall speed is lower than specification, insufficient
engine output or faulty torque converter is sus-
pected. Check for engine misfiring, ignition timing,
valve clearance etc. If these are good, torque
converter is faulty.
Symptom
Selector lever operation isstiff
Probable causeIncorrect adjustment of sleeve
Incorrect adjustment of control cable
Excessive wear of detent plate
Worn contact surfaces of pushbutton and sleeveRemedyAdjust
Replace
Starter motor does notoperate with the selector
lever in the “N” or
“P”position
Will not shift to
4-speedMalfunction in inhibitor switch
Malfunction of starter relay
Incorrect adjustment of control cableMalfunction of OD switch
Replace
Adjust
Replace

21-204AUTOMATIC TRANSAXLE - Troubleshooting
c;_----__---___-.
IGNITIONSWITCH(IG2)0
?
3E-7r
0
1UA
\IEjC-53mJ
ca (LB)
POWER/
ECONOMY
;$;;E OVER "r-
D-19A, .
12l!i3Fl3453$
,F
IGHT
3 19 ~lo~ll~l2~la~lq1qls
E
A/T SELECTOR
LEVER POSITION
ILLUMINATIONLIGHT
WITHOUTAU;iUi~;UISE
hf---
II
sP5 11
LIEI
AUTO-
CRUISE
CONTROL
UNIT
Y
-t
______--___---__--------
4
gF
C-61 57_______-__-----_---_-----
J/B
Remark**Mark indicates the oPtional wiringFEI~~I;S for auto-cruise control

21-210AUTOMATIC TRANSAXLE - Service Adjustment Procedures
OSA0141
ti Button pressed (while brake
pedal is depressed)
l Button not pressed
9 Button pressed
SELECTOR LEVER OPERATlON CHECKNZlFlAE1. Shift selector lever to each range and check that lever
+moves smoothly and is controled. Check that position
indicator is correct.
-L*
2.Check to be sure the selector lever can be shifted to each
position (by button operation as shown in the illustration).
3. Start the engine and check if the vehicle moves forward
when the selector lever is shifted from
N to D, and moves
backward when shifted to
R.4. When the shift lever malfunctions, adjust control cable
and selector lever sleeve. Check for worn shift lever
assembly sliding parts.
NOTETo move the selector lever from the “P” position to any
other position, first turn the ignition key to any position
other than “LOCK (OFF)” and depress the brake pedal.
KEY INTERLOCK MECHANISM CHECKNZlFUAA1. Completely stop the vehicle and switch OFF the engine
before making the check.
2. Check to be sure that, under the following conditions, the
select lever cannot be moved from the “P” position to any
?cother position.
~.‘,Also check, at the same time, that the button cannot be
pressed.Ignition key position:
“LOCK (OFF)“, or removed
Brake pedal: Depressed
3.Check to be sure that, under the following conditions, the
select lever can be moved from the “P” position to any
other position.
Press the button a few times and check to be sure that the
select lever moves smoothly.
Ignition key position: “ACC”
Brake pedal : Depressed
Button
: Pressed4. Check to be sure that, at all positions of the select lever
(other than
“P”), the ignition key cannot be turned to the
“LOCK (OFF)” position.
Check to be sure that the ignition key smoothly turns to the“LOCK (OFF)” position when the select lever is then set to
the “P” position and the button is released.
5. If a malfunction is discovered when following the above
,”checking procedures, either adjust or check the key
interlock cable mechanism. (Refer to
P.21-220.)

AUTOMATIC TRANSAXLE - Service Adjustment Procedures21-21109A0146
OQMOO45
control lever
control lever
5 mm
Section A-A
(2 in.)Manual
controllever
Switch body
SHIFT LOCK MECHANISM CHECKN21FVAA
1.
2.
3.
4.Check to be sure that, under the following conditions, the
select lever cannot be moved from the
“P” position to any
other position.
Ignition key position: “ACC”
Brake pedal: Not depressedButton: Pressed
Check to be sure that, under the following conditions, the
select lever can be moved smoothly from the “P” position
to other position.
Ignition key position: “ACC”
Brake pedal: Depressed
Button: Pressed
Check to be sure that, under the following conditions, the
select lever can be moved smoothly from the “R” position
to the “P” position.
Ignition key position: “ACC”
Brake pedal: Released
Button: Pressed
If a malfunction is discovered when following the above
checking procedures, either adjust or check the shift lock
cable mechanism. (Refer to
P.21-220.)
INHIBITOR SWITCH ADJUSTMENTNZlFKAJ
INHIBITOR SWITCH1. Place selector lever in “N” (Neutral) position.
2. Place manual control lever in “N” (Neutral) position.
3.To adjust, rotate the switch body so that the manual controllever 5 mm
(2 in.) hole and the switch body 5 mm (.2 in.)
hole are aligned.
4.Tighten the mounting bolts of the inhibitor switch body to
the specified torque. At this time, take care to prevent
dropping the switch body.
Specified torque:
lo-12 Nm (7-9 ftlbs.)
5.Loosen the nut shown in the figure, and lightly pull the end
of the transaxle control cable in the “F” direction by hand.
6. Tighten the nut to the specified torque.
Specified torque:
IO-14 Nm (7-10 ftlbs.)7. Check that the selector lever is in “N” position.
8. Check that it securely operates and functions on the
transaxle side in the range which corresponds to each
position of the selector lever.