1990 MITSUBISHI SPYDER check engine

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
Item
No. Check itemCheck conditions
Normal
Idling (vehicle stopped)
Driving at 10 mph)Selector lever position:
2 range
Vehicle speedDriving at constant speed of
38 40 km/h (25 mph) (20 seconds40 km/hsensoro r m o r e )
Selector lever position:Driving at constant speed of range50 (31 mph) (20 seconds50Overdrive: OFF
or more)
Accelerator pedal position
Pressure control Engine: Idling (vehicle
45solenoid valvestopped)
Selector lever position: Depress slightly
range[Driving at 5 (3.1. mph)]
47
49
Torque converter
clutch solenoid
Amount of torque
converter clutch
slippage
Torque converter
clutch solenoid
duty Selector lever position:
range
Overdrive: OFF
Selector lever position:
range
Overdrive: OFF
Driving at constant speed of
50 km/h (31 mph) (20 seconds rpmor more)
Driving at constant speed of
70 km/h (43 mph)
Driving at constant speed of
50 km/h (31 mph) (20 seconds0or more)
Driving at constant speed of
70 km/h (43 mph)0
ACTUATOR TEST REFERENCE TABLE
Item No.Check item Drive contents
01Pressure controlCurrent flows to the
solenoid valve lenoid valve for 5
at 50% duty
Check conditions
Engine:
Idling (Vehicle stopped)
Selector lever:
range
Throttle opening angle: Fully closed
Normal condition
The brake
pressure is
sured and the pressure
during actuator driving is
lowered.
TSB Revision

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
CHECK AT TCM TERMINALS
No.Check item
Check conditions Normal conditionRemarks
Engine: Idling
Torque converter Selector lever position:
rangeo v
1clutch solenoid
When clutch solenoid is operating
Engine: Battery positive
Shift control solenoid Selector lever position:
range
2voltage
valve A (SCSV-A)
Engine: Idling
Selector lever position: 2 range
At all timeso v
3Oil temperature
warning light Ignition switch: 5 minutes after turning
Battery positive AWD only
on
Communication with Engine: idle4Selector lever: rangeo vECM
Engine: Idling
Selector lever position:
range7 servo
switch Selector lever position:
range,Battery positive
Transaxle condition: gearvoltage
Battery positive
8 compressor A/C switch: ON
clutch relay signal
A/C switch: OFFo v
9Diagnostic outputWhen normal .
terminalFlashing
11Diagnostic test mode
control terminal
12Power supply Engine: Idling Battery positive v o l t a g e
13
14
15
17
GroundEngine: Idlingo v
Pressure control
solenoid valve Engine: Idling
Selector lever position:
range
Battery positive
Shift control solenoid Transaxle condition: 1 st and gearvoltage
valve (SCSV-B)
Transaxle condition: and gear.0
Communication with Engine: idle after warming upo t h e r t h a n 0
ECMSelector lever: range
(approx. 2.5
TSB Revision

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
No.Check item
Check conditionsNormalRemarks
16Communication withEngine: idle
ECMSelector lever: range
20Closed throttle
position switch Engine: Idling
Engine: Off idle
21
23
24
25
26
31
32
33
34
35
36
37
38
Throttle position
sensor Accelerator pedal: Fully closed
Accelerator pedal: Fully open
Oil temperature
sensor Fluid temperature:
Fluid temperature:
3.9
1.4
Sensor ground Engine: IdlingI--
Power supplyBattery positive
voltage
Ground Engine: IdlingIo v
Park/ Neutral position
Selector lever position: rangeBattery positive
switch (P) voltage
Selector lever position: Out of range 0
Park/ Neutral position
Selector lever position: rangeBattery positive
switch (R) voltage
Selector lever position: Out of
range0
Park/ Neutral position Selector lever position: rangeBattery positive
switch (N) voltageSelector lever position: Out of range 0
Park/ Neutral position
Selector lever position: rangeBattery positive
switch (D) voltage
Selector lever position: Out of
range0
Park/ Neutral position Selector lever position: 2 rangeB a t t e r y
switchvoltage
Selector lever position: Out of 2 range 0
Park/ Neutral position
Selector lever position: range positive
switch (L)voltage
Selector lever position: Out of
range0
switch Overdrive switch: ON
Overdrive switch: OFF
Battery positive
voltage
o v
Brake pedal is depressedo v--- I
light switch Brake pedal is releasedBattery positive voltage
TSB Revision

AUTOMATIC TRANSAXLE
ENGINE AND ENGINE> Troubleshooting
No. Check item
Check conditionsNormal condition
39
40Backup power supply Ignition switch: OFFBattery positive
voltage
Vehicle speed sensor Vehicle: Slowly moving forwardFlashing
Measure between terminals (41) and
41Pulse generator
(PG-B)
(42)Engine: 3,000
Selector lever position: range
Transaxle condition:
gear
Measure between terminals (41) and
42Pulse generator (42)
(PG-B)Engine: 3,000
Selector lever position: range
Transaxle condition:
gear
43Pulse generator A
(PG-A) Measure between terminals (43) and(44)Engine: 3,000
Selector lever position: range
Transaxle condition:
gear,
Measure between terminals (43) and
Pulse generator A
44Engine: 3,000 (PG-A) Selector lever position: range
Transaxle condition:
gear
45 GroundEngine: Idlingo v
46Ignition pulse Engine: 3000
TSB Revision

AUTOMATIC TRANSAXLE
ENGINE. (TURBO) AND ENGINE> Troubleshooting
Checkitem
PulseCheck conditions
Selector lever position: range
Overdrive: OFF
Normal
Driving at constant speed of 50
mph) (20 seconds or
more)
W a v e f o r m A
PulseSelector lever position: range
Overdrive: OFF
Vehicle
speed Selector lever position: range
sensor Overdrive: OFF
at constant speed of 50
mph) (20 seconds or Waveform
more)
Driving at constant speed of 50
mph) (20 seconds or Waveform
m o r e )
Pressure
controlAccelerator pedal position .
solenoid
Engine: Idling (vehicle stopped)
Fully closed Waveform
valveSelector lever position: range
,
WAVEFORM SAMPLE
Waveform AWaveform
.
5
0
TSB Revision
,
WaveformWaveform
2
1
0
-1
- 2
0
-10
-20

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> On-vehicle Service
ON-VEHICLE SERVICE
TRANSAXLE FLUID LEVEL CHECK
Refer to GROUP 00 Maintenance Service.
TRANSAXLE FLUID REPLACEMENT23100100176
Refer to GROUP 00 Maintenance Service.
TRANSFER OIL LEVEL CHECK23100110025
Refer to GROUP 00 Maintenance Service.
TRANSFER OIL REPLACEMENT23100120023
Refer to GROUP 00 Maintenance Service.
TSB Revision

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND On-vehicle
AA
A
Section A-A
Hole in endManualcontrol
lever
Hole in
flangeSwitch
body
00004249
Manual control lever
S W I T C H
23100150072
1. Set the selector lever to the (Neutral)
2.Loosen the’control cable to lever coupling
adjusting nut to free the cable and lever.
3. Set the manual lever to the neutral position.
4.Loosen and adjust the park/neutral position switch body.
Then the hole in the end of the manual control leve r
and the hole in the flange of the park/neutral
switch body must be aligned.
5. Tighten the park/neutral position switch body mo unting
bolts to the specified torque. Be careful at this
the position of the switch body is not, changed. ,
6.Lightly pull the transaxle in the arrow’s
tion, and tighten the adjusting nut to the specified torque,
7. Check that the lever is in
8. Check that each range on the transaxle side oper ates
and functions correctly for each the selector
lever.
Refer to GROUP On-vehicle Service.
TSB Revision

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND On-vehicle Servide
PULSE GENERATOR A CHECK
1. Disconnect the pulse generator A connector
2. Measure the resistance between the
generator
side connector terminals and 2.
Standard
3. If the resistance is outside the replace
the pulse generator assembly.. .
PULSE GENERATOR CHECK
1. Disconnect the pulse generator connector.
2. Measure the resistance between the
generator
side connector terminals 3 and 4.
Standard [at
3.If the resistance is outside- the standard replace
the pulse generator assembly.
PARK/ NEUTRAL POSITION SWITCH CONTINUITY CHECK
Refer to
OVERDRIVE SWITCH CONTINUITY CHECK23100330032
Refer to
THROTTLE POSITION SENSOR (TPS) CHECK
Refer to GROUP On-vehicle Inspection of Compo-
nents.
CLOSED THROTTLE POSITION SWITCH CHECK
Refer to GROUP inspection of
nents.
TSB Revision