relay MITSUBISHI SPYDER 1990 Service Owner's Manual

ENGINE (NON-TURBO)>
Scan tool 20
Injector C i r c u i tNo.
27
[Comment]l Open or shorted injector control Backgroundl Open injector
l Grounds for the injector circuits are provided by t he PCM.l (ASD) supply l Battery power is provided through the relay (ASD relay).
l Driver tailedlThis DTC is set if an open or short-circuit conditi on is detected in the control circuit the individual injector.
Range of Check
l Battery voltage: or morel relay (ASD relay): ON
l Engine: 3000 or lessSet Conditionl force is not detected for 3 seconds immediately af ter injectors
Measure at the injector connector lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test
10
relay (ASD relay)
l Voltage between 2 and ground
[Measure with the relay (ASD relay) on]
OK: Battery positive voltage
OK
Check the harness wire between the relay relay) and
the injector connector. Repair,
Measure at the PCM connector lDisconnect the connector, and measure at the harnes s side.lDisconnect PCM connector and short terminal (67) of
the harness-side connector to ground.
l Voltage between 17 and ground
OK: Battery positive voltage Check the following
Check the harness between PCM and injector if necessary.
OKNGCheck the following connector: Repair,
OK
Check trouble symptom.
N G
Replace the PCM.
Revision

(NON-TURBO)>
Scan tool 21
Injector Control CircuitNo.
,
Probable cause
27
[Comment]l Open or shorted injector control Backgroundl O p e n i n j e c t o rl Grounds for the injector circuits are provided by t he PCM.
l voitage supply at injector
l Battery power is provided through the relay (ASD l ’ Driver in failed, , lThis DTC is set if an open or short-circuit conditi on is detected in the circuit for
the individual injector. ,
Range of Check
l Battery
or morel relay (ASD relay): ONl Engine: 3000 or less
Set Condition
l force is not detected for 3 seconds immediately af ter injectors . .
SCAN TOOL Actuator test
10 relay (ASD relay)
NG Repair the relay (ASD relay) circuit.
OK: The reiav sound can be heard.
NGCheck the injector. (Refer to Replace
OK
Measure at the injector connector lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) relay isturnedonandoff everyapprox. l between 2 and ground
[Measure with the relay (ASD relay) on]
OK: Battery positive
OK
Check the harness wire between the relay (ASD relay) and
the injector connector. Repair, if necessary.
Measure at the PCM connector
lDisconnect the connector, and measure at the harnes s side.lDisconnect PCM connector A-l 07 and short terminal (67) of
the harness-side connector to ground.
l
between 13 and ground
OK: Battery positive
Check the following connectors:
Check the harness between PCM and injector connecto r. if necessary.
OK
Check the following connector:
OK
NG Repair
Check trouble symptom.
NG
Replace the PCM.
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ENGINE (NON-TURBO)>
Scan tool 42
Code General scan tool
No.Ignition Coil CircuitP r o b a b l e
43
[Comment]
BackgroundlIgnition coil wiring harness or connectorfailedl The PCM provides the ground control circuit for the side of ignition coil. Open circuit in coill Battery voltage is through the relay (ASD relay). P C M Range of Checkl Battery voltage: 13 or more (engine is running)
l relay (ASD relay): ON
l Engine: 3000 or lessl Engine speed and ignition timing are always stable.
Set Condition
lThe primary circuit is not achieving peak current w ith maximum dwell for 3 seconds.
SCAN TOOL Actuator test 10
relay (ASD relay)
OK: ooeratina sound can be heard.
NG Repair relay (ASD relay) related
OK
Measure at the ignition coil connector lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) relay (ASD relay) is turned on and off 1.4 seconds.
l Voltage between 2 and ground
[Measure with
relay (ASD relay) on.]
OK: Battery positive voltage Check the harness wire the (ASD-relay) and
the ignition coil connector. Repair,’ necessary.
NGMeasure at the PCM connector Check the following connector: lDisconnect the connector and measure at the harness side.lDisconnect PCM connector and short terminal (67) of
the harness-side connector to ground.
Voltage between 3 and ground OK: Battery positive voltage
OK
Check the harness wire between PCM and the ignition connector. Repair, if necessary.
Check the following connector:
OK
NG Repair
Check trouble symptom.
Replace the PCM.
N G
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ENGINE (NON-TURBO)> ,
Scan tool 43
Code General scan tool
No.Ignition Coil Primary CircuitP r o b a b l e
43
[Comment]lBackgroundIgnition coil wiring harness orfailedl
The PCM provides the ground control circuit for the primary side of ignition coil. Open circuit in ignition l Battery voltage is supplied through the relay relay).
l PCM failedRange of Check Battery voltage: 13 or more (engine is running)l relay (ASD relay): ON
l Engine: 3000 or less
l Engine speed and ignition timing are always stable.
Set Condition
. .
lThe primary circuit is not achieving peak current w ith maximum dwell for 3 seconds.
SCAN TOOL Actuator test
10 relay (ASD relay)
NG Repair relay (ASD relay) related
OK: Relay operating sound can be heard.
Measure at the ignition coil connector lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) relay (ASD relay) is turned on and off every 1.4 s econds.
l Voltage between 2 and ground
[Measure with
relay (ASD relay) on.]
OK: Battery positive voltageCheck the harness wire between the ignition coil connector. if necessary.
Measure at the PCM connector
lDisconnect the connector and measure at the harness side.lDisconnect PCM connector and short terminal (67) of
the harness-side connector to ground.
l Voltage between 2 and ground
OK: Battery positive voltage
OK
Check the harness wire between thePCM andthe ignition coil
connector. Repair, if necessary.
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Check the following connector:
OK
NG Repair
Check trouble symptom.
N G
Replace the PCM.

ENGINE (NON-TURBO)> Troubleshooting
Scan tool 44
C o d eNo relay) output
No.General scan tool V o l t a g e a t P C M
42
[Comment]l relay (ASD output openBackgroundl Fused circuit openlThe PCM senses operation of the relay (ASD relay) by measuring relay voltage.
l relay (ASD reiay) failed .
(If relay turns to ON, voltage is high). l Circuit in faked
.lThis DTC indicates that no voltage is being sensed when the relay (ASD relay) is
being energized.
Range of Check
l Battery voltage: or more ,
l switch: ON
l Unless the engine is cranking
Set Condition
l The relay voltage is low for 1 second.
.
NG Replace
Measure at the
relay (ASD relay) connector lDisconnect the connector and measure at the harness side.
l Voltage between 6 and ground
OK: Battery positive voltage
l Voltage. between 6 and ground
OK: Battery positive voltage
OK
, .
Check the harness wire the relay relay) and,
the fusible link. Repair,
NGCheck the followingconnect Repair
OK
Check trouble symptom.
N G NG
Check the harness wire between the PCM and the relay (ASD Repair
relay) connector.
Check trouble symptom.
the PCM.
NG
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E N G I N E
Scan tool 61
Code General scan tool
No.Injector Control Circuit c a u s e
27
[Comment]
Backgroundl Open or shorted injector control
l Grounds for the injector circuits are provided by t he PCM.l
Open injector
l Battery power is provided through the relay. (ASD relay) l
O p e n in PCM lThis DTC is set if an open or short-circuit is detected in the control forthe individual injector.Range of Check
l Battery voltage: or morel relay (ASD relay): ON Engine: 3000 or lessSet ConditionlCounterelectromotive force is not detected for thre e seconds immediately after injectors off.
Check the injector. (Refer to
OK
Measure at the injector connector lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) istumedonandoff l Voltage between 2 and ground
[Measure with the relay (ASD relay) on]
OK: Battery positive voltage
N G the following connect&s:
OK NG
Check trouble symptom. Repair
NG
Check the harness wire between the the injector connector. Repair, if necessary.
NG Measure at the PCM connector Check the following connectors: lDisconnect the connector, and measure at the harnes
s side.lDisconnect PCM connector and short terminal (67) of
the harness-side connector to ground.
l Voltage between 16 and ground
OK: Battery positive voltage
Check the harness between PCM and injector connecto r; if necessary.
OK
Check the NG Repair
OK
Check trouble svmotom.I
Replace the PCM.
NG
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ENGINE (NON-TURBO)>
NG Replace
Scan tool 62
Code General scan tool Upstream Shorted to Volt;
No.
21
[Comment]l Heated oxygen sensor failedBackgroundl W i r i n glUpstream heated oxygen sensor requires a heater cir cuit for proper operation.
l PCM,
l The heater circuit is supplied with battery voltage through the
relay relay):lA failure in the sensors heater circuit prevents it from providing accurate data to the PCM.l the PCM monitors more than 1.2 volts, the sensor h as shorted to heater circuit voltage.Range of Checkl Two or more minutes after the engine startsl Engine coolant temperature: or moreSet Conditionl Heated oxygen sensor output voltage is more than 1. 2 for 3 seconds.
OK
OKNG Repair
Check trouble symptom.
NGNGCheck the harness wire between the PCM and the heat ed oxygen Repairsensor (front).
OK
Replace the PCM.
Scan tool 68
Code General scan tool PCM Failure
No. Communications
53
[Comment]Set Condition
l There is no communication between in the control module.
Probable cause
l PCM failed
the PCM.
Probable cause
[Comment] BackgroundlBattery temperature input is used to adjust the gen erator charging rate based upon the
ambient temperature around the battery.
Range of Check
l
switch: ON
Set Condition
lThe sensor voltage is not within the acceptable ran ge of 0.3 to 4.9 volts for 3 seconds
or more. l
Battery temperature sensor failed
l PCM failed
Replace the PCM.
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ENGINE
Scan tool 92
C o d e G e n e r a l s c a n t o o l L o w S p e e d F a n
No.Circuit, 35,
[Comment]l Relay coil open or shortedBackgroundlThe low speed radiator fan relay controls the low of the radiator fan. l
Ignition switch output circuit openOne side of the relay control coil is supplied with 12 volts when the ignition switch isl
Low speed radiator fan l o r turned to the ON position.
l The circuit is completed when the other side of the relay coil is grounded by the PCM.l .
lThe PCM grounds the relay control circuit depending
on engine coolant temperature etc. . . Range of Checkl
Battery voltage: 10 or morel Ignition switch: ONSet ConditionlAn open or short-circuit condition is detected in t he low speed radiator fan relay controlcircuit for 3 seconds.
NGMeasure at the PCM connector Check the radiator fan relay drcuit.lDisconnect the connector, and measure at the harnes s side.
l Voltage between 55 and ground
(ignition switch: ON)
OK: Battery positive voltage
l Connect a jumper wire between 55 and ground.
(Ignition switch: ON)
OKRadiator fan runs at low speed.
OKNG Repair
OK
Check trouble symptom.
Replace the PCM.
NG
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ENGINE
Scan tool 93
Code General scan tool High Speed Fan
No.Control Relay Circuit
35
[Comment]
Background
lThe high speed condenser fan relay controls the hig h speed operation of the condenserfan.lOne side of the relay control coil is supplied with 12 volts when the ignition switch is
turned to the ON position.
lThe circuit is completed when the other side of the relay coil is grounded by the PCM.lThe PCM grounds the relay control circuit depending on engine coolant temperature and
other conditions.
Range of Check
l Battery voltage:
or more Ignition switch: ONSet ConditionAn open or shorted condition is detected in the hig h speed condenser fan relay controlcircuit for 3 seconds.
lRelay, coil open, shorted . ..
lHigh speed condenser fan relay control circuito p e n PCM failed
Measure at the PCM connector lDisconnect the connector, and measure at the harnes s side.Check the condenser fan circuit.
l Voltage between 19 and ground
(Ignition switch: ON)
OK: Battery positive voltage
l Connect a jumper wire between 19 and ground.
(Ignition switch: ON)
OK A/C condenser fan runs at high speed.
OK. . . . NG RepairCheck the following connector: IOK
Check trouble symptom.
Replace the PCM.
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ENGINE (NON-TURBO)>
Scan tool 101
Code General scan tool
No.Fuel Pump Relay Control Circuit
42
[ C o m m e n t ]l Relay open or shortedBackgroundFuel pump relay control open l The fuel pump relay control the battery voltage sup plied to the fuel pump.lThe PCM provides a ground path for the fuel pump re lay. I n o p e r a t i v e P C M ,
l This DTC indicates an open or short-circuit in the control Range of Check Battery voltage: 10 or more
l Ignition switch: ON
Set Conditionl Open or short circuit is detected in fuel pump rela y control circuit for 3 seconds.
NGCheck the fuel pump Replace
OK,
Measure at the fuel pump relay connector Check the following connectors: lDisconnect the connector, and measure at the harnes s side.
l Voltage between 6 and ground
OK: Battery positive voltage
OK
Check the harness wire between the pump connector. Repair, if necessary.
N G
Check the following connector: Repair
OK
Check trouble symptom.
NG
Check the harness wire between theconnector.
NG Repair
OK
Replace the PCM.
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