key battery MITSUBISHI SPYDER 1990 Service Repair Manual

GENERAL Maintenance
21 SYSTEM component
damage, to wiring,
harness, etc.)
Certification labelManufacture dateI
SRSlight
Insulating tape
The SRS must be inspected by an
after the manufacture date the certification
label located on left center
,
“SRS” WARNING LIGHT CHECK,
Turn the ignition key to the “ON” position. the
warning light illuminate for about 7 seconds, turn “OFF” and
then remain extinguished for at least 45 seconds? I f yes,
SRS system is functioning properly. If not, refer t o GROUP
Troubleshooting.
SRS COMPONENTS VISUAL CHECK
1.Turn the ignition key to position, disconnect the
negative battery cable and tape the ‘terminal.
Caution
Wait at least 60 seconds
disconnecting the bat-
tery cable before doing any further
The SRS system is designed to enough voltage
to deploy the air bag for a short after the
battery has been disconnected, so serlous
result from unintended air bag deployment
is done on the SRS system immediately the
tery cable is disconnected. ,
2. Remove the floor console assembly. (Refer GROUP
Floor Console.)
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ENGINE (NON-TURBO)> Troubleshooting 3
If scan tool not available
1.Cycle the ignition key On-Off-On-Off-On within seconds.
2.Count the number of times the malfunction indicator lamp
(check engine lamp) on the instrument panel flashes on
and off. The number flashes represents the trouble
code.There is a slight pause between the flashes
representing the first and second digits of the’ co de.
Longer pauses (approx. 4 seconds) separate individu al
,
trouble codes.
3. Repair the malfunction while referring to the in spection
chart for diagnostic trouble codes.
4. After disconnecting the battery cable from the b attery
terminal for a few minutes, reconnect the
5.Start the engine and run it at for about minutes
after the engine has warmed up.
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ENGINE (NON-TURBO)>
Scan tool 103
Code General scan tool
No.Upstream Failure
21
[Comment]
Background
l The PCM continues to monitor this system after the key is OFF.
l The PCM waits some periods to allow the heated oxyg en sensors to cool.
l Once the PCM calculates that the heated oxygen sens or is cooled, it energizes the
relay (ASD relay) and tests for the heated oxygen sensor operation.
Range of Check
5 seconds or more after turning the ignition switch to OFF. Battery positive voltage: or morelThe heated oxygen sensor output line voltage rises by 0.49 or more within 144 secondsafter turning the ignition switch to OFF. The initial rise of the output line voltage is less than 1.57 V.Set ConditionHeated oxygen sensor’s circuit does not show the ap propriate decrease of voltage the test.
l Heated oxygen sensor heater open l harness and connectors ,
Measure at the heated oxygen sensor (front) connect or l
Disconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test
relay (ASD relay) Check the following connector: everyapprox. 1. Voltage between 4 and ground
[Measure with the relay (ASD relay) on]
OK: Battery positive voltage Check the harness wire between the and
2. Continuity between 3 and ground the heated oxygen sensor connector. if
OK: Continuity
2. NG Check the harness wire between the heated oxygen sensor and
OKthe ground. Repair, if necessary.
NGCheck the followingconnect Repair
OK
Check trouble symptom.
NG
Replace the heated oxygen sensor (front).
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E N G I N E
[Comment]
Background
l The PCM continues to monitor this system after the key is OFF.
l The PCM waits some periods to allow the heated oxyg en sensors to cool.
l Once the PCM calculates that the heated oxygen sens or is cooled, it energizes the
relay relay) and tests for the heated oxygen sensor operation.
Range of Check
l 5 seconds or more after turning the ignition switch to OFF.
l Battery positive voltage: 10
or morelThe heated oxygen sensor output line voltage rises by 0.49 or more within 144 secondsafter turning the ignition switch to OFF. The initial of the output line voltage is less than 1.57 V.Set ConditionHeated oxygen sensor’s circuit does not show the ap propriate decrease of voltage the test.
1. NG
Measure at the heated oxygen sensor (rear) connecto r
lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) everyapprox. 1. Voltage between 3 and ground [Measure with the relay
(ASD relay) on]
OK: Battery positive voltage
2. Continuity between 4 and ground
OK: Continuity
OK
2. NG l
Heated oxygen sensor heater
l harness and
. .
Check the harness wire between (ASP the heated oxygen sensor
Check the harness wire between the heated oxygen s ensor and
the ground. Repair, if necessary.
NG Repair
Check trouble symptom.
OK
NG
Replace the heated oxygen sensor (rear).
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E N G I N E
AND ENGINE>
ON-BOARD DIAGNOSTICS
The engine control module monitors the input/out-
put signals (some signals at all times and the othe rs
under specified conditions) of the engine control
module.
Whenamalfunction has continued for a specified
time or longer since the irregular signal is initia lly
monitored, the engine control module judges that
a malfunction has occurred.
After the ECM first detects a malfunction, a diagno s-
tic trouble code is recorded when the engine is
restarted and the same malfunction is re-detected.
However, for items marked with a
a diagnostic
trouble code is recorded on the first detection of
the malfunction.
There are 45 diagnostic items, and the diagnostic results can be read out with a scan tool.
Moreover, since memorization of the diagnostic
trouble codes is backed up directly by the battery,
the diagnostic results are memorized even if the ignition key is turned off. The diagnostic trouble
codes will, however, be erased when the battery
terminal or the engine control module connector
is disconnected.
In addition, the diagnostic trouble code can also
be erased by turning the ignition switch to ON and
sending the diagnostic trouble code erase signal
from the scan tool to the engine control module.
Caution
If the sensor connector ‘is disconnected wlth
the’ ignition switch turned on, the diagnostic
trouble code is
In send
the diagnostic trouble code erase to the
engine control module in order to erase the
diagnostic memory.
The 45 diagnostic items are as follows,
and if plural items are activated, they are all ind i-
cated sequentially from the smallest code number.
Caution
The diagnostic trouble code of ignition
adjustment signal is output whenever
for ignition timing adjustment Is grounded.
Therefore, it is not a malfunction that the code
is output when adjusting
The ECM records the diagnostic, trouble code and
the engine operating conditions at the time the
malfunction was detected.’ These are called
“freeze frame” data.
This data indicates the engine operafing condition
from when nothing at all is detected to the initial
detection of malfunction.
This data can be read by using the scan tool, and
can then be used in simulation tests trouble-
shooting. Data items are as follows.,,
Data Unit
Engine coolant temperature.
Engine speed
Vehicle speed
Long-term fuel compensation
(Long-term fuel trim)
Short-term fuel compensation
(Short-term fuel trim)
km/h
Fuel control condition O p e n l o o p
l Closed loop
l Open loop-drive condition
l O p e n
set
l Closed
(rear) failed
Calculation load value
Diagnostic trouble code during data recording
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AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting
FAIL-SAFE FUNCTION
If a problem which interferes with the continuous safe operation of the transaxle is identified, the TCM
records a diagnostic trouble code in memory, all so lenoids are turned off, and the module is switched
to limp-in mode.
When limp-in mode is started, the transaxle is locked in gear if a drive gear had previously been
selected. Meanwhile, if
or range was selected, operation is as usual.
If the ignition key is turned to OFF and then back to ON again, limp-in mode is
(a record
is retained).
HOW TO READ AND ERASE DIAGNOSTIC
CODES
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1.
2.If battery voltage is low,
trouble
not be output. Be sure to check the battery and
system before, .
If the battery is if connector’
is disconnected,
trouble code memory’
will be erased. Do not ‘disconnect the battery or
until after the diagnostic trouble codes are record ed.,
3.
1.
2.
3.
4.
5.
6.
Turn the ignition switch off before connecting or
disconnecting the scan tool.
Install the interface cartridge cartridge) to the scan
tool
Use the cartridge adapter harness to connect the
scan tool
to the data link connector.
Read the diagnostic trouble codes.
Repair the malfunction while referring to the INSPE CTION
CHART FOR DIAGNOSTIC TROUBLE CODES.
Turn the ignition switch to OFF and then back to ON
again.
Erase the PCM diagnostic trouble code
immediately after erasing the TCM diagnostic troubl e
code.
7.Check that the diagnostic trouble code is normal.
Caution
NOTE
If the transaxle DTC has been set, (excluding cases where
only part of the DTC has been set), the TCM will le t
the PCM know that a DTC has been sent to the PCM
and a problem has occurred. As a result of this, th e PCM
records the DTC for a transaxle problem
After the transaxle has been repaired, the DTC
which has been stored in the PCM will remain
there without being erased, even after the DTC whic h
is store in the TCM has been erased. Therefore the DTC
in the PCM needs to be erased also.

AUTOMATIC TRANSAXLE
ENGINE (NON-TURBO)> Troubleshooting.
Relay always off (Relay contacts
Relay output (switched battery) has less than 3 volts at TCM pins 56 and 57 (Connectorl when TCM pin 55 (Connector to energize relay. Relay should be energizedl
whenever key is ON. .
. .Malfunction of relay (open contacts)
Harness or connector between relay coil and
TCM open or short-circuited Harness or connector between relay output
and TCM open-circuited Relay supply lines open-circuited
Relay ground open-circuited
Malfunction of TCM
EATX relay Replace the EATX relay
l Ignition switch: OFF
ON l Check thecontinuity between
O K : can be heardterminals (2) (8).OK: Continuity when systemvoltageisappliedminals (4) and no conti-
nuity when system
voltage is not applied.
OK
Measure at the EATX relay connector
l Disconnect the connector and
measure at the harness side.
1. Voltage between (4) and continuity
between terminal (6) and ground
OK: Continuity
2. Voltage between (4) and ground. l Ignition switch: ON
OK: Battery positive voltage
OK
2 . N G Check the harness wire between the TCM and the EATX relay.
(Open circuit check)
Check the following connector: .Repair
Check the following connector: .
l Connecttheconnectorandmeasure
at the harness side.
l Voltage between (8) and ground.
l Ignition switch: ON
OK:
voltaae
OK
Check the harness wire between the and the EATX
Replace the TCM
Check the harness wire between the
TCM ((terminal
(57)) and EATX
.
Check the following connector: .I
Check trouble symptom.
NG
Replace the TCM
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ABS Troubleshooting , ,
INSPECTION PROCEDURE 3When ignition key is turned to “ON” (engine stopped ),
ABS warning light does not illuminate
[Comment]When power is supplied to the ABS-ECU, the valve relay changes from to ON by the initial check, and thus even if there is a problem with the circuit between
ABS light and ABS-ECU, the light will illuminate once when the valve relay
is OFF.
Accordingly, the cause of the light not illuminatin g is probably an open circuit in the
light power circuit, a blown light bulb, or an open circuit in both the circuit between
the ABS
light and the ABS-ECU and the circuit between the ABS light and the ABS valve relay.When other lights also do not illuminate, the cause is probably a blown fuse.
Measure at combination meter connector
l Disconnect the connector and mea-
sure at the harness side.
l Ignition Switch ON
lVoltage between terminal 10 and body
OK Battery positive voltage Check trouble symptoms
Measure at combination meter connector
sure at the combination meter side.
l Continuitv between terminals
R e p l a c e t h e
OK Continuity ,
OK
Check the harnesses between the ABS valve relay and the combination meter,
a n d b e t w e e n t h e A B S - E C U a n d
combination meter (common section).
if necessary.
INSPECTION PROCEDURE 4
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Even after the engine is started, the ABS Warning l ight ,remains illuminated.. .
[Comment]There is probably a short in the ABS warning light illumination circuit.l Malfunction of combination meterl Malfunction of ABS valve relayl Malfunction of ABS-ECU. ,
NOTE
This trouble symptom is limited to cases where comm unication with the scan tool is’
is normal) and the diagnostic trouble code is a normal diagnostic trouble code..YESDisconnect the ABS-ECU connector Does the light remain illuminated?
NO
Short circuit inside the combination or in the harnessbetween the meter and
Replace the ABS-ECU.

,
INSPECTION PROCEDURE 5
When ignition key is turned to “START”, ABS warning light Probable
does not illuminate.
[Comment]The ABS-ECU uses the power to the which is cut when the ignition switch is M a l f u n c t i o n
turned to “START”. The ABS light uses power which is not cut evenl
M a l f u n c t i o n o f when the ignition switch is turned to “START”.Accordingly, because the power to the ABS-ECU is st opped in “START” position, .if the light does not illuminate at this time, the cause
is a problem in the light illumination circuit in the valve relay.,
Measure at NG
Disconnect the connector and
OK
the unit.
INSPECTION PROCEDURE 6
and Repair
Check trouble svmotom.
meter and the hydraulic
The ABS warning light flashes once after the igniti on key
is turned to “ON”. The light illuminates when the i gnitionProbable cause ,
key is turned to “START”, and when the key is retur
ned to
“ON”, it flashes once.
[Comment] Malfunction of harness or connectorWhen power flows, the ABS-ECU turns on the light for approximately 1 second Malfunction of while it performs a valve relay test. If there is a break in the harness between theECU and the light illuminates only when the valve relay is off in the valve
relay test, etc.
Measure at ABS-ECU connector l Disconnect the connector and mea-
sure at the harness side.
Ignition switch ON
Voltage between terminal 25 and body
ground
OK Battery positive voltage
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OK
Check the harness between thecombination meter and the ABS-ECU. if
Repair
l
OK
Check trouble symptom.
NG Repair
NG Replace the

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.