1990 MITSUBISHI SPYDER ECU

BODY Door
Diagnostic trouble
codecheckharness
Scan tool (MUT-II)
(ETACSinput check)
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Gather information from customer. Check trouble symptom.
Does notreoccur Intermittent malfunction
Reoccurs
to the INSPECTION CHARTFOR TROUBLE SYMPTOMS.
Ground terminal
DIAGNOSTIC FUNCTION
INPUT SIGNAL INSPECTION POINTS
When Using the Scan Tool 1. Connect the scan tool to the data link connector .
Caution
Always turn the ignition switch OFF before discon-
necting or connecting the scan tool.
2. If buzzer of the scan tool sounds once when a sw itch
is operated (ON/OFF), the ECU input signal for that switch
circuit system is normal.
Using a Voltmeter
1.Use the special tool to connect a voltmeter between the
grounded terminal and the ETACS terminal of data link
connector.
2. If the voltmeter indicator deflects once when a switch
is operated (ON/OFF), the ECU input signal for that switch
circuit system is normal.
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‘ D o o r.
‘I-
POWER WINDOW
,,
INSPECTIONCHART FOR TROUBLESYMPTOMS
Trouble symptom Probable causeRemedy
When ignition switch is
lturned to ON, power Broken wire in power window switch circuit. Check to
Flowor in each harness.(Refer to windows do not oper- l
Power window switch is faulty.ate.lPower window motor is faulty.
l ETACS-ECU is faulty.
lConvertible top control module is faulty.
Power windows can beBroken wire in input circuit in door switch.operated even when alDoor switch is faulty. Check Flow (Refer to door is opened within
l ETACS-ECU is faulty.30 seconds after theignitionswitch hasbeen turned to OFF.
After turning the igni- lETACS-ECU is faulty.Replace the ETACS-ECU.tion switch to OFF, thetimer does not operate. . .
Power windows can belETACS-ECU is faulty. Replace the ETACS-ECUoperated over 30 se- after the ignitionswitch has been turnedto OFF.
Power windows can belPower window main switch (driver’s side door)
Check according to Flow Chart operated by means ofis faulty.
the power window sub( R e f e r t o
switches (passengers’side), but can not by
means of the power ,
window main switch
(driver’s side).
Passenger’s side pow-lPower window sub switch (passenger’s sideCheck according to Flow Chart window can be (Refer to by means of the door) is faulty.
power window main
switch (driver’s side),but can not by meansof the power windowsub switches (passen-gers’ side).
the power win- lBroken wire in power window up signal circuit. to Flow Chart are not lowered l Convertible top control module.(Refer to the power do not lower if the con-‘.
top switch is to open or close.
the power win- l
Broken wire in ground input signal circuit.Check according to Chart are not lowered lPower window main switch (driver’s side door)
(Refer to and the poweris faulty. main switch’s l
Convertible top control module is faulty.ock switch is OFF, the side window does not automatically if
he convertible top
is set to open or However, the side window lowers when the lock
is ON.
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42-36BODY Door:
TROUBLE SYMPTOM INSPECTION CHART
A When ignition switch is turned to ON, power window does not operate.
Check the Scan Tool Input Signal
Ignition switch input signal
OK:The scan tool buzzer sounds once
NG Check the harnesses between the Repair
tion switch and the ETACS-ECU.
when the ignition switch is ON.
OK
Power window relay continuity
check (Refer to
.Power window main switch conti-nuity check (Refer to .Power window sub switch continu-ity check (Refer to . Power window motor check
(driver’s side and passengers’
side) (Refer to
NG Replace
NG Repair andDisconnect the connector and
measure at the harness side.
Voltage between terminal
(5)
and ground
OK: Battery positive voltageCheck trouble symptom.
Check the harness between the power relay and the ETACS-ECU.
Check the harness between the power relay and the power main switch and the power window sub
OK
Measure at the window main
switch connector
. Disconnect the connector and
measure at the harness side.
Continuity between terminal (2)
and ground
OK
Measure at the power window motorconnector (driver’s side) and (passenger’s side).. Disconnect the connector and
measure at the harness side.
Continuity between terminals
(2) and ground
OK: Continuity
OK
Check the harness between the powerwindow main Repair,if necessary.
NG NG Check the Repair and
Check trouble symptom.NG Check the harness between the powerwindow main switch and the power win-dow motor side and gers’ side). if
Replace the ETACS-ECU
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When ignition switch is turned to’ ON, A
The quarter window (power window) P o w e r window mainswitch check (Refer to l sub switch continuitycheck (Refer to lPower window motor check side and passengers’ side) (Refer
to
Measure at the power window motorconnector and ( p a s s e n g e r ’ s s i d e ) . measure at the harness Continuity between and ground
,
Check trouble symptom.
Check the between the power relay and the power window
Thescantool buzzersoundsonce
Check the harnesses between the igni-tion switch and the ETACS-ECU.
Iwhen the ianition switch is ON. Repair
NG Replacecheck(Refer to
Measure at the power window
l Disconnect the connector and
measure at the harness side.
groundOK: positive voltage
NG
C h e c k t r o u b l e
window main switch and window motor, and between the
c o n v e r t i b l e t o p
power window w i n d o w a n d top control module. .
Replace the top
Check trouble symptom.
NG
Check between the
power ‘window relay and fusible link
Repair, if necessary.
and Repair
Check trouble symptom.
window relay and the power window Repair Measure at the power
main t h e
switch connector l
Disconnect the connector and
measure at the harness side.Repair
Continuity between terminal (2) and g r o u n d Check trouble symptom.
OK: ContinuityNG
OK
Check the harness between the pourer
Check the harness between the power if necessary,
window relay and the ETACS-ECU. Repair
OK
ETACS-ECU.
R e v i s i o n

42-38BODY Door
Power windows can be operated even when a door is opened within 30 seconds after the ignition
switch has been turned to OFF.
NGCheck the Scan Tool Input Signal side door switch input circuit system check
Door switch input signal to GROUP 54 Ignition Switch)
OK: The scan tool buzzer sounds once when the door switch is
ON.
OK
Check the Scan Tool Input Signal
Ignition switch input signal
OK: The scan tool buzzer sounds once when the ignit ion key is
turned to the ON or OFF position.
OK
the ETACS-ECU
check 54 Ignition Switch)
Power windows can be operated by means of the power window sub switches (passengers’ side),
but can not by means of the power main switch (driver’s side).
NG
(Refer to Replace
OK
NG Repair and OK
Check trouble symptom.I
NG
Check the harness between the power window main swi tch and
the window if
Passenger’s side power window can be operated by me ans of the power window main switch (driver’sside), but can not by means of the power window sub switches (passengers’ side).
NGPower window sub switch continuity check
(Refer to Replace
OK
Check the following connectors: and
OK
NG Repair
Check trouble symptom.
NG
Check the harness between the power window sub swit ch and
the power window relay. Repair, if necessary.
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BODY Door
CENTRAL DOOR LOCKING SYSTEM
INSPECTION CHART FOR TROUBLE SYMPTOM
Trouble symptom Probable cause Remedy
When the central door lock switch is
l Malfunction of central door lock Check according to Flow Chart A
operated, all doors are not locked or switch
(Refer to
unlocked. Incorrect connector connection
or malfunction of harness
When the driver’s side door lock is lMalfunction of driver’s side door Check according t o
Chart
turned with the key or if the driver’slock actuator switch(Refer to side door inside door lock knob is op-lIncorrect connector connection
another door is not locked oror malfunction of harness
unlocked.l
Malfunction of ETACS-ECU
When the driver’s side door lock is l
Malfunction of driver’s side door Check according t o Flow Chart
turned with key, another door is notkey cylinder switch(Refer to
unlocked.l
Incorrect connector connection
or malfunction of harness
l Malfunction of ETACS-ECU
the passenger’s side door lockl Malfunction of passenger’s side Check according to
Flow Chart
turned with key, another door is notdoor key cylinder switch(Refer to
or unlocked.Incorrect connector connection
or malfunction of harness
TROUBLE SYMPTOM INSPECTION CHART
A When the central door lock switch is operated, al l doors are not locked or unlocked.I
without entry system>
NGlCentral door lock switch continuity check (Refer to ReplacelDoor lock power relay 1 continuity check (Refer to
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OK
Measure at the door lock power relay 1 connector Check the harness between the fusible link and the door
Disconnect the connector and measure at harness sid e.
Voltage between (7) and groundlock power relay 1. Repair, if necessary.
OK: Battery positive voltage
(2) Continuity between terminal (5) and ground OK: Continuity
OK
Measure at the door lock switch connector (L.H.) and (R.H.)Disconnect the connector and measure at harness sid e. L.H.: between terminal and groundO K : p o s i t i v e v o l t a g eR.H.: Voltage between terminal (5) and ground
OK: positive voltage
(2) L.H.: Continuity between terminal (2) and groun d
OK: Continuity
Continuity between terminal (7) and ground
OK: Continuity
OK
Door lock actuator check (Refer
OK
Check the harness between the door lock power rela y 1 and the
ground. Repair, if necessary.
Check the harness between the door lock switch and the door
lock power relay Repair, if necessary.
Check the harness between the door lock switch and the ground.
Repair, if
NG Replace
Check the harness between the door lock actuator an d the door
lock power relay 1. Repair, if necessary.

42-42BODY Door
When the driver’s side door lock is turned with the key if the driver’s inside
knob is operated, another door is not locked.
.
Check the scan tool input signal
Actuator switch (driver’s side) input signals
OK:The scan tool buzzer sounds once when actuator swit ch (driv-er’s side door) is unlocked.
NG
Door lock actuator check N G Replace
NG
and Repair
Check trouble symptom.
NG NG
Repairswitch(driver’s side).
OK
Check the harness between the actuator switch (driv er’s side) andthe ground. Repair, if necessary.
When the driver’s side door lock is turned with key , another door is not unlocked.
OKCheck the scan tool input signalCheck the harness between the door power relay and the
Key cylinder switch (driver’s side) input signalsETACS-ECU.OK:The scan tool buzzer sounds once when key cylinder switch(driver’s side door) is LOCK or UNLOCK.
NG
Door lock key cylinder switch to
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OK
NG Repair and
Check trouble symptom.
OK
NG
Check the harness between the ETACS-ECU and the ke v NG
switch (driver’s side)., ,
OK
Check the harness between the key cylinder switch ( driver’s side)
and the ground. Repair, if

BODY
the passenger’s side door lock is turned with
NGDoor lock key cylinder SW(Refer to . .
NGCheck the following Repair.
and .
OK
Check trouble symptom.. .
NGN GMeasure at the key cylinder switch (passenger’s sid e) connector Check the harness between the side) and the door lock power .
Disconnect the connector and measure at harness sid e. between terminal (3) and groundOK:Battery positive voltage .
OK
Check the harness between the key cylinder switch (
passenger’s
side) and the ground. Repair, if necessary.
KEY REMINDER SYSTEM
INSPECTION CHART FOR TROUBLE SYMPTOMS
T r o u b l e s y m p t o m
Probable cause
If the driver’s side inside lock knob is lBroken wire in input circuit in door
locked under the following conditions, the switch.
Chart A
door can not be locked:l Door switch is faulty.
lThe key is inserted in the ignition key l
cylinder..
lThe driver’s side door is closed.
If the driver’s side inside lock knob ‘is lBroken wire in input circuit in Check
locked under the following conditions, the
switch.
door will be locked:l
Door switch is faulty.(Refer-to
lThe key is inserted in the ignition key l
cylinder.l
Broken wire in input in key
lThe driver’s side door is opened.reminder switch.l ETACS-ECU is faulty
If the driver’s side inside lock knob is
Check accordingto
locked under the following conditions, the reminder switch.
door can not be locked:lKey reminder. switch is faulty.(Refer to
lThe key is removed from the ignition l
key cylinder.lThe driver’s side door is opened.
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