MITSUBISHI SPYDER 1990 Service Repair Manual

( N O N - T U R B O ) >
Scan tool 133
Code General scan tool Timing Belt Skipped 1 Tooth or
No.More
11 ,,
[Comment]l Timing belt improperly BackgroundlThe PCM uses voltage signals generated by the camsh aft position sensor and l C r a n k s h a f t s e n s o r
position sensors to determine engine synchronizatio n.
l lif these signals become out of sync, this DTC is pr oduced.
l Range of Check connected l With the engine running, every 44 ms an inhibit con dition is looked for as follows:lwide-open throttle, large change in MAP, cold engine, insufficient start to run time, Crankshaft position sensor eriy connected outside given windowslCamshaft’s relative position not lif an inhibit condition does not exist, the misalignment between the camshaft and crankshaftone of the following have been serviced:
is monitored.
Set Condition camshaft, timing. ten-
When the camshaft position sensor is offset from th e crankshaft position sensor one tooth
sprocket,or more.PCM the
NGCheck the following Repair
,Check the camshaft position sensor.
(Refer to GROUP 16 Ignition System.)
OK
Check the crankshaft position se
(Refer to GROUP 16 IgnitionSystem.)
OK
I
NG Repair
,
Check the timing belt. (Refer to GROUP 11
Timing Belt.)
Caution
When the following parts arereplaced with new ones, be sure to use the scan to
the camshaft position sensor with the crankshaft po sition sensor again or disconnect the negative
battery cable for 10 seconds or more:
camshaft, camshaft sprocket, timing belt, tensioner, cylinder head, head gasket, crankshaft sprocket,
crankshaft, cylinder block, etc.
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ENGINE (NON-TURBO)>
Scan tool 135
No. No 5 Volts to MAP
14
[Comment]Background Open circuit
The
of 5 volts is to the MAP sensor. if this is extremely l Signal circuit grounded ,lthe MAP sensor output deviates from standard .
Range of Check Before starting engine and immediately after stopp
ing engine
Set Condition ,
The output of MAP sensor is lower than the specified
Measure at the MAP sensor connector lDisconnect the connector, and measure at the harnes
s side.
l between 2 and ground
(ignition switch: ON)
O K :
OK
Check the harness wire connector. Repair, if necessary.
Check the following connectors: Repair
OK .
Check trouble symptom. .
N G, N GCheck the harness wire between the PCM and MAP Repairconnector.. .
OK
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E N G I N E
Scan tool 136
Code General scan tool No 5 Volts to Throttle
No.Sensor
24
[Comment]
Backgroundl S e n s o r circuit grounded
lThe of 5 volts is to the TPS. if thisvoltage is extremely low, TPS l position sensor . Loss of output deviates from standard Range of Check
l Vehicle speed: More than 20 mph
l Engine speed: 1500
or more
l Manifold vacuum: Less than 13 (4 Set ConditionlThe output voltage of TPS is lower than the
l
Check the throttle position sensor (TPS) (Refer to
Measure at the throttle position sensor connector Check the following connectors: lDisconnect the connector, and measure at the harnes s sideOK
Check trouble symptom.
U K
Check the following connectors:
OK
NG
Check the wire between the PCM Repair, if necessary..
Repair
Check trouble symptom.
N G
Check the harness wire between the PC
OK
Replace the PCM.
Repair .
Scan tool 137
EATX Controller DTC Present cause
45.
[Comment] Sensors related to Background controlThe transaxle control module monitors the malfunctions of sensors and
actuatorsl TCMregarding the transaxle if any malfunction is detected, the TCM informs th e PCMl PCM failedby sending a Range of Check, Set Conditions
A malfunction is input from the TCM.,
Check the TCM (Refer to GROUP Troubleshooting.)
Revision

ENGINE Troubleshooting .
Scan tool 138
Code General scan tool
No. Not
25
[Comment]Range of Check
l Engine:
l Vehicle at rest and the brake appliedSet Conditionl speed differs from target idle by 200 for 12 seconds. l
Idle air control motor failed
l motor related circuit .
SCAN TOOL SENSOR READ TESTS (Data list)
12 position (Refer to Check the air control motor. (Refer to
OK
Check the throttle body minimum air flow. (Refer to
Code
No. R e l a y
General scan tool High Speed Radiator Fan Control
[Comment]
Background
lThe high speed radiator fan relay controls the high speed operation of the radiator fan.lOne side of the relay control coil is supplied with 12 volts when the 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/or A/C compressor condition, etc.
Range of Check
l Battery voltage: 10
or more
l Ignition switch: ON
Set Condition
lAn open or shorted condition is detected in the hig h speed radiator fan relay control circuitfor 3 seconds.
Probable cause
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l Relay open or l Ignition switch output lLow speed radiator fan relay control circuit
open or shorted
NGMeasure at the PCM connector Check the radiator fan circuit.lDisconnect the connector, and measure at harness side. Voltage between 69 and ground(Ignition switch: ON),.
OK: Battery positive voltage .,
l
Connect a jumper wire between 69 and ground(Ignition switch: ON)
OK: Radiator fan runs at high speed.
OK
Check the following connector: N G Repair
OK
Check trouble symptom.1
NG
Replace the PCM.

ENGINE (NON-TURBO)>
Scan tool 146
Code General scan too!
No.5 Volts Supply output Low‘
14
[Comment)
l The PCM supplies aregulated B-volts to the and MAP sensor.lThis DTC is set when both the and MAP sensors have the sensing too low of voltage.
Range of Check
l Ignition switch: ON
Set Condition
l
feed circuit drops below 4 volts for over four sec onds.l
supply circuit groundedl
PCM failed
Check harness wire between the PCM the MAP sensor connector. Repair, if necessary.
N G
Measure at the position sensor connector Check the following connectors: lDisconnect the connector, and measure at the harnes s side.
l Voltage between 3 and ground
(Ignition switch: ON)
OK: 4.8
Repair
OK
.
Check harness wire between the PCM and the TPS necessary;
NGCheck the following Repair
OK
Replace the PCM. ,
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E N G I N E
Scan tool 149
Code General scan tool Fuel Level Sending Unit Volts Too
No.Low
42
[Comment]l Sensor signal line is grounded. . Backgroundl Fuel level sensor failedlThe fuel level sensor, which is installed in the fu el tank, informs the PCM of fuel level(amount).Loss of supply. . lThe PCM does not carry out a specific OBD-II monito r when the fuel amount is small
or large.
Range of Checkl Battery positive voltage: 13 15 l Engine is runningSet ConditionsThe fuel level sensor output voltage is less than 0 .1 V.
Check the fuel gauge unit and its circuit. (Refer to GROUP 54
Combination Meters.)
OK1Check the following NG Repair
Check trouble symptom. Check the harness wire between the PCM and fuel lev
el sensor
Scan tool 150
Code General scan tool
Fuel Level Sending Unit Volts Too
No.High
42
[Comment]l Sensor is grounded.Backgroundl Fuel level sensor failedlThe fuel level sensor, which is installed in the fu el tank, informs the PCM of fuel levell Open sensor ground circuit(amount.)lThe PCM does not carry out a specific OBD-II monito r when the fuel amount is small
or large.
Range of Check
l Battery positive voltage: 13
15 l Engine is running
Set Conditions
The fuel level sensor output voltage is less than 4 .5 V.
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Check the fuel gauge unit and its circuit. to GROUP 54 Combination Meters.)
OK
Check the connectors: A-l 06 NG Repair
Check trouble symptom. Check the harness wire between the PCM and fuel lev
el sensor
connector.
the PCM.Repair

ENGINE Troubleshooting
[Comment]
Background
lThe fuel level sensor, which is installed in the fuel tank, informs the PCM of fuel level(amount).lThe PCM does not carry out a specific monitor when the fuel amount is small
or large.
Range of Check
l Battery positive voltage: 13
15 l Engine is running
Set Conditions
The fuel level signal does not change according to the fuel consumption by driving.Probable cause
l
Fuel level sensor failed
l PCM failed
Check the fuel gauge unit and its circuit.
(Refer to GROUP 54 Combination Meters.)
OK
N GCheck the following connectors: A-l 06 Repair
OK
Check trouble symptom.
N G
N G
Check the harness wire between the PCM and fuel lev el sensor Repairconnector.
OK
Replace the PCM.
Scan tool 153
Code General scan tool Battery Temperature Sensor
No.Voltage Too LowI
44
[Comment]
Background
Battery temperature input is used to adjust the gen erator charging rate based upon the ambient
temperature around the battery.
Range of Check
Ignition switch: ON
Set Conditions
The sensor voltage remains less than 0.3
for 3 seconds.
l Battery temperature sensor l PCM
Replace the
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E N G I N E
Scan tool 154
C o d e G e n e r a l s c a n t o o l T e m p e r a t u r e S e n s o r
No.Voltage Too High
44
[Comment]
Backgroundl Battery temperature sensor l PCM failedBattery temperature input is used to adjust the gen erator charging rate based upon the ambienttemperature around the battery.Range of CheckIgnition switch: ON
Set Conditions .
The sensor voltage remains more than 4.9 for 3 seconds.
Replace the PCM.
Scan tool 155
C o d e G e n e r a l s c a n t o o l U p s t r e a m S h o r t e d t o
No. G r o u n d
[Comment]
Background
lWhen the heated oxygen sensor temperature is low, t
he sensor has the same electrical
characteristics as an insulator.
lThe heated oxygen sensor output signal line is rest ricted to That is why the line voltageis approx. when the heated oxygen sensor temperature is low.lIf the heated oxygen sensor output signal line is grounded, its voltage will become low.
Range of Check
l Engine coolant temperature when the engine starts:
or less
l Within three seconds after the engine
Set Conditions
The heated oxygen sensor output signal line is or less.
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l
.
Upstream, heated oxygen sensor failed
Wiring harness and connectors failed PCM failed
NGCheck the harness wire between the PCM and upstream heated Repair
oxygen sensor connector.
OK
Replace the PCM.

,
-- Scan tool 156,I
C o d e G e n e r a l s c a n t o o l D o w n s t r e a m to
No. G r o u n d
21
[Comment]l Downstream heated oxygen Backgroundl harness and connectors lWhen the heated oxygen sensor temperature is low, t he sensor has the same electrical
l PCM failed characteristics as an insulator.lThe heated oxygen sensor output signal line is That is is approx. when the heated oxygen sensor temperature is low.If the heated oxygen sensor output signal line is g rounded, will become lRange of checkl Engine coolant temperature when the engine starts: or lessl Within three seconds after the engine starts
Set Conditions
The heated oxygen sensor output signal line is
or less.
NGCheck the harness I .oxygen sensor connector.. , ,
OK
Replace the PCM.
11
[Comment]Background , connectedlAfter the engine has been started, the PCM maintain s an expected camshaft port l position
Scan tool 157,General scan toolIntermittent Loss of CMP CKP Probable cause
value. connectedlAt every crankshaft leading edge, this value is updated to reflect the expected
.Camshaft position sensor change in the cam level.
l lAt every crankshaft trailing edge, this value is compared to the true port level. sensor improperly lIf there is a disagreement between two values, then the diagnostic code isset.l sensor
Range of Check
l Engine: running
Set Condition
l Cam and crank signals have been out of sync, than times.
N GCheck the following connectors:. A-l 06
OK
__Check no cam sync. signal at PCM. (Refer to INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE
CODE.
Check no crank reference signal at PCM. (Refer to INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE
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ENGINE (NON-TURBO)>
Scan tool 160
Code General scan tool EVAP Leak Monitor
No.Detected
31
[Comment]
Background
l The PCM monitors that the fuel tank, purge lines, e tc. are well.
l
ventilation solenoid with the canister ventilation valve (incorporated in the lIf the fuel tank and purge lines are sealed the pressure will rise well by the solenoid specific timeslAfter the pressure rises well, the diaphragm inside the solenoid will not work any more.lIf the purge air leaks slightly, the solenoid will be activated more than specific times.
Range of Check, Set Condition
l The solenoid has been activated more than specific times.
‘ P r o b a b l e
I,
l Fuel tank cap screwed on l tank and purge lines, l Evaporative emission failed
l
l PCM failed’
NGCheck the evaporative Replace
(Refer to GROUP Emission Control System.)
OK
Check the evaporative emission purge solenoid.NG Replace
(Refer to GROUP 17 Emission Control System.)
OK
Check the fuel tank and purge line for leakage.
Scan tool 161
Code General scan tool EVAP Leak Monitor Large Leak
No. Detected
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[Comment]
l The PCM monitors that the fuel tank, purge lines, e tc. are well.
l
ventilation with the canister ventilation valve (incorporated in the solenoid) lIf the fuel tank and purge lines are sealed correct ly, the pressure will well by the solenoid specific times.lAfter the pressure rises well, the diaphragm inside the solenoid will not work any more.lIf the purge air leaks excessively, the solenoid should be activated much more than specific
times.
of Check. Set Condition
l been activated much more than specific times.
Probable cause
l Fuel tank filler cap screwed on lFuel tank and purge seated
l Evaporative solenoid
failed
l
l PCM ,
Check the evaporative emission ventilation solenoid .
(Refer to GROUP 17 Emission Control System.) Replace
NGCheck the evaporative emission purge solenoid. Replace
(Refer to GROUP 17 Emission Control System.)
OK
Check the fuel tank and line for I