display MITSUBISHI SPYDER 1990 Service Owner's Manual

ENGINE AND EMISSION CONTROL Auto-cruise Control
INSPECTION CHART FOR SYMPTOMS
Communication with
scan tool is not
possible. Communication with systems is not possible.
Communication with auto-cruise control-ECU only
is not possible.1
2
Input switch inspection using the scan tool is not possible. (However,
diagnostic inspection is possible.)3 .
Auto-cruise control When brake pedal is depressed 4 does not cancel. When clutch pedal is depressed
When select lever is set to range
When CANCEL switch is set to ON
5
17-26
I 7 17-27
Trouble symptomInspection
procedure No.Reference page
The diagnosis result displayed on the scan tool is normal even though
auto-cruise control cannot be set.
Auto-cruise control cannot be set.I9
Hunting (repeated acceleration and deceleration) oc curs at the set vehicle
speed.I1
When the auto-cruise control main switch is ON, the switch indicator on the
instrument panel does not illuminate. (However, aut o-cruise control is normal.)
Auto-cruise control main switch illumination light does not illuminate.111 7 - 2 9 , .
1217-29
Auto-cruise control indicator light inside combinat ion meter does not illuminate.
(However, auto-cruise control is normal.)13
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ENGINE AND EMISSION CONTROL Control. System
INSPECTION PROCEDURE 7
When auto-cruise control CANCEL switch is set to ON,
auto-cruise control does not cancel.
[Comment]An open-circuit in the circuit inside the CANCEL sw itch may be present.
Replace the auto-cruise control switch.
INSPECTION PROCEDURE 8l the
The diagnostic result displayed on the scan tool is normal
even though auto-cruise control cannot be set.
[Comment]Because of an open-circuit in the battery backup ci rcuit system, the fail-safe function preventsdiagnostic trouble codes from being memorized and d isplayed even though auto-cruise controlis canceled.
Probable cause
l Malfunction of the connector.
l Malfunction the harness.
l Malfunction of the
Measure at auto-cruise control-ECU
connector
l sure at the harness side.lVoltage between terminal (16) and
around
Battery positive voltage
OKCheck the harness between the
auto-cruise control-ECU and power
supply. Repair, if necessary.
Check the following connector:
Replace the auto-cruise control-ECU.
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AUTOMATIC TRANSAXLE
(TURBO) AND ENGINE> Troubleshdoting
Code No.
servo switch c a u s e
[Comment]l Malfunction of servo If the servo switch does not ON in 1 and 3 range within 5 seconds, there is l
Malfunction of connector
an open circuit in the servo switch and diagnostic trouble code No. 21 is output. l
Malfunction of TCM
If the servo switch does not OFF in 2 and 4 range, there is a circuit in
the servo switch and diagnostic trouble code No. 22 is output,
(Refer to
OK
N G Replace
Repair
lDisconnect the connector and I
sure at the harnessside. OK
servo switch and TCM
Check trouble Replace the TCM.
NG
Check the harness wire between the servo switch and TCM con-
nectors. if
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Code No. 23 Ignition signal Probable cause
[Comment]l Malfunction of ignition coil
If ignition pulses are not input to the TCM while t he engine is idling, there is an open circuit l
in the ignition signal line and diagnostic trouble code No. 23 is output.Malfunction of power transistor
l Malfunction of connector
l Malfunction of TCM
Is the engine speed displayed on the
tachometer correct?
Yes
lInspection procedures circuit system (Refer to GROUP
.
NG Repair
OK
Check trouble symptom.
NG
N G Repairpower transistor andTCMconnectors.
the TCM.

AUTOMATIC TRANSAXLE
ENGINE (TURBO) AND ENGINE> Troubleshooting
INSPECTION PROCEDURES 12
l Some points (Early, late shifting points) P r o b a b l e c a u s e
[Comment]Some shift points occurs early, late while driving.
In such cases, the cause is probably al
Malfunction of valve body
defective valve body, or it is a phenomenon related control and is not an abnormality.
Refer to Automatic Transaxle Overhaul
Does fuzzy shifting occur normally? No problem because it is a phenomenon that appears due to
Nofactors associated with control.
YesDeviations at some shift points occurs only when the ATF is cold or less].
NoYes Deviations at some shift hot or more].
Valve body disassembly, cleaning and reassembly
Pay particular attention to loosening of bolts, and to damage,
If it is considered that the damage or chipping can not be
repaired, replace the valve body assembly.
INSPECTION PROCEDURE 13
lNo fail-safe codes (Does not shift)Probable cause
[Comment]l Malfunction of overdrive switch
Shifting does not occur while driving, and no fail- safe codes are output. In such cases, the l
cause is probably a defective overdrive switch or P ark/Neutral position switch.Malfunction of Park/ Neutral position switch
l Malfunction of power supply circuit
l Malfunction of TCM
No
Yes
Check to be sure that backup power is being supplie d to
the TCM.Does overdrive operate?
Yes
SCAN TOOL Data list
l 35 Overdrive switchCheck to be sure that power is being supplied to th e TCM
SCAN TOOL Data list
l 37 Park/ Neutral position switch
I OK: TCM input signal and selector lever position
should match.
Check the overdrive switch system according to insp ection
NGOK
, procedure (Refer to
Replace the TCM. ,
OK: When overdrive switch turns from OFF to ON,
scan tool display turns from OFF to ON.
Code No. 36, 37
Park/Neutral position switch system
(Refer to
Power circuit check
lPay particular attention to open circuits in the ha rness,defective connector connections and open circuits i nfuses.lIf there is an open circuit in a fuse, the cause of
the should be located and it should be
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AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLESHOOTING FLOW
.
.Gather information from customer.
Verify complaint
Communication withscan tool not possible
Record the diagnostic trouble code
and fail-gafe code. (Refer to ,
Diagnostic trouble code outputNo diagnostic trouble
Erase the diagnostic trouble code code displayed(Refer to
Basic inspection item adjustment(Refer to
Abnormality exists
(no diagnostic trouble code)
Road test (Refer
Abnormality exists
(diagnostic trouble
code present)
Diagnostic trouble
Recheck trouble codeswhich were recorded before the roadt e s t .
Search for cause.
FoundNot found
NG
OK
‘CompletedConfirmation test (road test)
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AUTOMATIC TRANSAXLE ENGINE (NON-TURBO)> Troubleshooting
ROAD TEST
Use scan
ConditionsOperationJudgment value Inspection item Diagnostic
trouble code
1Ignition switch: ON Check the limp-in Data list Transaxle control
Engine: Stoppedmodel No limp-in modemodule
Transaxle control 14
relay15
20
Check the battery Data list Battery12
positive voltage
2Warming up Drive for 15 Data list No. 56 O i l t e m p e r a t u r e 7 4
minutes or more so
that the automatic Gradually rises to
sensor
transmission fluid
temperature
becomes
3Engine:Engine Data list Transaxle control 45
Selector lever(1) (for at least(1) 2.0 module
position:30 seconds) Check diagnos- CCD Bus19
tic trouble code
Solenoid Circuit
Selector lever
position
(3) (4)
(5) 2 (6)
Data list T r a n s a x l e r a n g e 2 8
and neutral position
(3) (4) switches
(5) 2 (6)
3Engine: Idle Accelerator pedal Data list Crankshaft position 18
Selector lever(1) Depressed (for (1) Engine speeds
position:at least 3 displayed on the
scan tool and
tachometer are
identical
Accelerator pedal
Data list T h r o t t l e p o s i t i o n 2 9
(1) Fully closed
400 or moresensor
(2) Fully open (for at least 2 seconds)
(2) 3,800 or less
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AUTOMATIC TRANSAXLE
ENGINE Troubleshooting
SERVICE DATA REFERENCE TABLE
Data No. Check itemDisplay
00 Throttle position sensor
01Transaxle range sensor 41
02Start or run position volt
03Transaxle range sensor 43
04 Switched battery volt
20 pressure switch
ON/OFF
212-4 pressureswitch
ON/OFF
22ODpressureswitch
ON/OFF
23 Overdrive lockout switch
ON/OFF
24Transaxle range sensor 1ON/OFF
25 Transaxle range sensor 2
ON/OFF
26Transaxle range sensor 43ON/OFF
27 Transaxle range sensor 41
ON/OFF
43 Engine speed
44Transaxle input speed
45Transaxle output speed
46Shift lever position information and controller lim
p-in status
Status
47Throttle position
48Transaxle shift schedule
Status
Partial/full lock status
58Shift code Status
59
60
61
Pressure switch error counter Counts
Speed/ratio error counter Counts
Speed/ratio error 1 second counter Counts
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AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
Data Check item
62Speed/ratio error 15 second counter
‘Display
Counts
63Engine model identification
64General flag
E n g i n e M o d e l
S t a t u s
65Actuator test statusIStatusI
66Element mask register StatusI
67
EEPROM flag register
68Output teeth count StatusTeeth
69Wheel speed coefficient in EEPROM
Coefficient
Current production MY/application MY Model Year
ACTUATOR R
E FER E N CE TA BL E
Item No.
Check item Drive contents Check conditions Remarks
01 solenoid
022-4 solenoid
03UD solenoid
04OD solenoid Current flows to the solenoid
Engine:Check the actuator
for 6 seconds at 50% duty. Idle (Vehicle stopped)test status (Display)
Selector lever position:
range
Throttle opening angle: Fully closed

AUTOMATIC TRANSAXLE
ENGINE
Code Scan tool 18Engine speed sensor circuit
No.General scan tool
Engine speed received at the PCM from the CKP over the CCD bus is less than 384 o f l Harness or connector between crankshaft
position sensor and TCM open or
. .
l of TCM
OK
Measure at the TCM connector l Disconnect the connector and
measure at the harness side.
l Voltage between (46) and ground.
S t a r t t h e e n g i n e .
O K :
C h e c k t h e l
OK
Road test (Refer to
Replace the TCM
Abnormality exists (no diagnostic trouble
. .
Abnormality exists(diagnostic troublecode present)
Recheckdiagnostictroublecodeswhich
were read before the road test
Diagnostic trouble
code output No diagnostic trouble
code displayed
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ABS Troubfeshooting , .
INSPECTION PROCEDURE 7
Break operation is abnormal
[Comment]This varies depending on the driving conditions and the road surface conditions, soproblem diagnosis is difficult. However, if a normal diagnostic trouble code is displayed,carry out the following
l Malfunction of wheel speed l Malfunction of ABS rotor
l Malfunction of wheel bearing
of hydraulic Malfunction of ABS-ECU
NG Repair
(Refer to
Wheel speed sensor output voltage check [ R e p l a c e t h e w h e e l
Hydraulic unit check (Refer to 1NGABS rotor check (Refer to Replace the rotor.
O K NGWheel bearing end play check Refer to GROUP 26 On-vehicle Repair
Service.Refer to GROUP 27 On-vehicleIService.I
Check trouble symptom.
ABS-ECU connector l Disconnect the connector and
measure at the harness side.
l Resistance vaiue between termi-
nals
14-15, and
O KThe sensor harness and connector
should be moved while these checks
are carded out.
OK
Repair
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Repair
.
NG Repair
OK
Check trouble symptom.N G Replace ABS-ECU.