sensor MITSUBISHI SPYDER 1990 Service Manual PDF

ENGINE (NON-TURBO)> Troubleshooting
INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODES
Scan tool 01
Code General scan tool
No.No Cam Sync Signal at PCMProbable cause
54
[Comment]l Open supply circuitBackgroundl Open sensor groundlThe PCM uses information from both the camshaft pos ition sensor and crankshaft positionl Open or shorted signal circuit
sensor to determine ignition timing. l Damaged camshaft target magnet
lWhen the camshaft position sensor signal is lost, t he PCM relies on the positionl Sensor failed,
sensor signal to allow engine operation. l PCM failed
lThis could result in fuel injection being out of phase, which would result in deteriorationof engine performance and emissions.
Range of Check ,
l
Ignition switch: ON
l Crankshaft position sensor signal (High or low) is input (Engine: Cranking).
Set ConditionlCamshaft position sensor signal (High or low) isn’t input for 2 seconds.
Check that the camshaft position
NG
Measure at the camshaft sensor connector lDisconnect the connector, and measure at the harnes s side.
l Voltage between 1 and ground
(Ignition switch: ON)
O K :
Repair
N GNG C h e c k t h e Repairconnectors:
l Voltage between 3 and ground
(Ignition switch: ON)
O K :
l Continuity between 2 and ground
OK: Continuity
OK
Check trouble
NG
Check the harness wire between the PCM and camshaf t positionsensor connector.
OK
NG
Replace the PCM.Repair
Check the following connector:
Repair
Check trouble symptom.
N G
Replace the camshaft position sensor.I
,
Check trouble symptom.
the PCM. I’
Scan tool 02
Internal Controller FailureNo.
53
P r o b a b l e c a u s e
[Comment]Set Condition l
PCM failed
l An internal fault has been detected in the PCM
Replace the PCM.
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ENGINE (NON-TURBO)>
C h a r g i n g T o o
47
[Comment]
Background
The PCM tries to maintain charging system voltage of between and 15 volts.
l This code indicates:
The battery voltage input is below the target charg ing voltage during engine
andNo significant change in voltage has been detected during active testing of the generator
output circuit.
Range of Check
lEngine speed: or more for approx. one minutelBattery positive voltage is at least 1 lower than the target charging voltage for approx.60 seconds.Set ConditionlBattery positive voltage does not change even if th e generator field current is cut off.
lDefects in generator or adjustmentl High resistance generatorl High between battery and
generator ground
l PCM
Check that the generator drive belt is properly in stalled. Repair
NG Measure the voltage between the generator terminal and the battery positive terminal. Engine: 1600 Headlight: High beam ON)
OK: Less than
Check the harness wire and terminal generator terminal and battery necessary.
NGMeasure the voltage between the generator body and battery Check the generator grounded line: neoative terminal. Engine: 1600 Headlight: High beam ON)
OK: Less than 0.5
OK
Measure at the generator lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) isturnedonandoff everyapprox. l Voltage between 1 and ground
[Measure when the relay (ASD relay) is turned on.]
OK: Battery positive voltage
NG Check the wire between generator relay
(ASD relay) connector. Repair, if necessary.
OK
Check the harness wire NG Repair connector.I
OK NG
SCAN TOOL SENSOR READ TEST (Data list) Check the harness wire between the PCM and the bat tery 10 Battery voltage as the ignition switch. Repair, if necessary.OK: indicated on the scan tool and actual positive
Check trouble symptom.
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ENGINE (NON-TURBO)> Troubleshooting
Scan tool 06
General scan tool Charging System Voltage Too
.High
46
[Comment]
Background Generator internal shorted
l The PCM tries to maintain charging system voltage o f between 13.2 and 15 volts.l
Generator field driver shorted to ‘ground l PCM failedlThis code indicates that the battery voltage input is above the target charging voltage
during engine operation and PCM efforts to regulate the generator field do not prevent
the voltage from rising.
Range of Check
lEngine speed: 1500 or more for approx. one minute
Set Condition ,
lBattery positive voltage is at least higher than target charging voltage for approx. 12seconds.
SCAN TOOL SENSOR READ TEST (Data list)
36 Charging system goal
OK:
or more
Replace the PCM.
SCAN TOOL SENSOR
(Data list)as well as me ignitionswitch. necessary.OK: on the scan tool and actual battery positivelCheck the wire between the PCM and ground.
voltage are the same. Repair, if necessary.
OK
, NG
tor. and if necessary.
Measure at the generator connector Repair megeneralDisconnect the connector and measure at the equipme nt side.l Continuity between 2 and generator body.
OK: No continuity
I
OK
Check me following NG Repair
OK
Check trouble symptom.
Check the harness wire
NG
OK
Repair
Replace the PCM.
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E N G I N E ( N O N - T U R B O ) >
Scan tool 26
Code
No.
scan tool Position Sensor
24
[Comment]
Backgroundl Sensor circuit shorted to
lThe sensor consists of a resistor that provides a signal to the PCMbasedl p o s i t i o n l of on the position of the throffle blade.
l The PCM uses throffle body position information to adjust fuel injector width.,Range of Checkl ignition switch: ON ,Set Conditionl
Throttle position sensor output remains less than for 1 second.
NGCheck the position Replace ,
OK
Measure at the throttle position sensor connector lDisconnect the connector, and measure at the harnes s side.
l between 3 and ground
(ignition switch: ON)
OK: 4.8-5.2
OK
Check connectors:
Check the harness wire and the TPSconnector.Repair, if necessary.
Check the following connectors:
OK
Check trouble symptom.
NG Repair
Check harness wire between the PCM and the TPS connector . Repair
the PCM.
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ENGINE (NON-TURBO)>
Scan tool 27
Code scan tool Throttle Position Sensor Voltage
No. High
24
[Comment] Sensor circuit openBackgroundl position sensor failed
lThe sensor consists of a resistor that provides a to the PCM based S e n s o r g r o u n d c i r c u i t on the position of the throttle blade.l The PCM uses throttle body position information to adjust fuel injector width.
Range of Check
l ignition switch: ON
Set Condition
l Throttle position sensor output remains more than for 1 second.
NGCheck the throttle position sensor. (TPS) (Refer to Replace
OK
Measure at the TPS connector lDisconnect the connector, and measure at the harnes s side.
l Continuity between 1 and ground
OK: Continuity
OK
Scan tool 30
Code General scan tool Engine Coolant Temperature
No.Sensor Voltage Too
22
[Comment]l Sensor shorted to Backgroundl Sensor internally shortedlData from the engine temperature sensor is used in most fuel and spark related
l PCM failed
control functions.
Range of Checkl Ignition switch: ON ,
Set ConditionEngine temperature sensor output remains less than 0.51 for 3 seconds.
Check the wire between We PCM and TPS Repair, if necessary.
NG Check the following connectors: Repair ,
Check trouble symptom.
OKNGCheck the harness wire between the PCM and the TPS connector.
NG
Replace
Replace
(Refer to
OK
Repair
OK
Check trouble symptom.
NG N G
the Repair
temperature sensor connector.
OK
Replace the PCM.
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ENGINE
Scan tool 31 .
Code General scan tool Engine Coolant Temperature
No.Sensor Voltage Too High
22
[Comment]
Backgroundl Sensor signal circuit open
Data from the engine coolant temperature sensor is used in most fuel and spark relatedl
Sensor internally openlcontrol functions.l PCM failedl When DTC is set, the PCM uses a default value as th e engine coolant temperature, andthe vehicle enters the limp-in mode.Range of Checkl Ignition switch: ON ,
Set Condition,lEngine coolant temperature sensor output voltage re mains more than for 3 seconds.
(Refer to
NG Replace
OK
Measure at the engine coolant temperature sensor lDisconnect the connector, and measure at the harnes s side.
l Continuity between 1 and ground
OK: Continuity
OK
OK
NG
NG
Check the harness wire between the PCM and the engi ne coolanttemperature sensor connector. Repair, if
Repair..
.
Check the harness wire between the coolanttemperature sensor connector.
[Comment] OK
Replace the PCM.
NG
Repair
Upstream Stays
Backgroundl
Sensor output voltage is checked.lIf voltage stays at center instead of switching, an open circuit is likely.
Range of Check
l 2 minutes after starting engine
l Engine coolant temperature: More than
Set ConditionNeither rich nor lean condition is detected from th e upstream heated oxygen sensor input.(Voltage is 0.5 volts for 1.5 minutes)
Check the heated oxygen sensor (front). [Refer to
l Heated oxygen sensor (front) Sensor signal circuit l PCM failed
OK. .
NGCheck the following connectors: Repair
Check trouble symptom.
Check the harness wire between Repair
sensor (front) connector.
OK
Replace the PCM.
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ENGINE (NON-TURBO)>
Scan tool 33
General scan tool is Too LongP r o b a b l e
[Comment]
Backgroundl Thermostat fully
l When the engine is started, the engine coolant temp erature The PCM checksl
Engine temperature sensor failedlthat the engine coolant rises the specified value within a sufficient period aft er theEngine coolant temperature
engine is started. improperly connected
l PCM failed
Range of Check
l Vehicle speed: More than 28 mph
l
minutes after starting engine
Set Condition
lEngine coolant temperature does not rise to 71 ,
Replace
(Refer to Replace
Repair
.
NG Repairtemperature sensor connector.
OK
Replace the PCM.
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ENGINE
I Scan tool 35
Code General scan tool
No.No Vehicle Speed Sensor Signal
15
[Comment]
Background
lThe speed sensor serves as a PCM input switching voltage between 0 and 5volts.lOnce the vehicle is in motion and the throttle is open, information from the sensor is
sampled every 11 milliseconds and compared to a min imum threshold equal to 1 mph.
lIf the sensors output voltage indicates a speed higher than this threshold, the sensor
is considered to be operating normally.
lFailure of the sensor would be quite noticeable bec ause the speedometer would fail tooperate.Diagnostic features that depend on the speed sensor may never execute if this component
fails.
of Check Engine coolant temperature: or more Transaxle: Other than or range only). 31 seconds after starting engine Brakes not applied Throffle valve: Open Engine: 1600 or more Difference between the atmospheric pressure and in take manifold pressure:
34 (10 or more Condition Vehicle speed: Less than lmph for 11 seconds
Measure at the speed sensor connector
l Disconnect the connector, and measure at the harnes s side.
l Voltage between 1 and ground
(Ignition switch: ON)
O K :
l Continuity between 2 and ground
OK: Continuity
OK
OK
Check trouble
Open or shorted. circuitS p e e d o m e t e r d a m a g e d Open supply circuit
Open sensor ground circuit
Vehicle speed sensor failed PCM failed
Repair
Check the harness wire between the PCM and the spee d sensor
connector. Repair, if necessary.
N G Check the following connectors: I Repair
SCAN TOOL SENSOR READ TESTS (Data list)
Replace the vehicle speed sensor.
connector.
N G NG
Repair
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ENGINE (NON-TURBO)>
SCAN SENSOR READ TEST list)
65 Vehicle speed sensor
l Is vehicle speed displayed during driving?
No
Check the following
OK
Check trouble symptom.
OK
harness wire module connector.
OK
Yes R e p l a c e t h e P C M .
N G Repair
NG Repair
Check the automatic transaxle control system.
Code General scan tool
No.MAP Sensor Voltage Too Low
14
[Comment]Background
lWhen this code is produced, the MAP sensor voltage has fallen below the minimum accept-able voltage of 0.02 volts.lAs in the situation above, the estimates MAP value to allow the engine to run.
Range of Check
l Engine:
l position sensor output voltage: Less than Set ConditionlMAP sensor output voltage remains less than for 2 seconds.
Probable cause
Open supply circuit Signal circuit shorted to ground Sensor l PCM failed
Measure at the MAP sensor connector lDisconnect the connector, and measure at the harness side.l Voltage between 2 and ground
(Ignition switch: ON)
O K :
OKCheck the harness wire between the PCM and MAP sens or
connector Repair, if
NGCheck the following Repair
OK
Check trouble symptom.
N G NG
Check the harness wire between the PCM and MAP sens or Repairconnector.
OK
Replace the MAP sensor.
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ENGINE
Scan tool 37 ,
Code General scan tool
No. 08 MAP Sensor Voltage Too HighProbable cause
14
[Comment] Signal circuit openBackground Sensor open lThis code is generated when the MAP sensor voltage
exceeds maximum voltage
of 4.7 volts. l
Sensor ground circuit open
Range of Check l
Sensor circuit shorted to voltage
l PCM
l Engine: 1500 l Throttle position sensor output voltage: Less than Set ConditionlMAP sensor output voltage remains less than 4.7 for 2 seconds. .
Measure at the MAP sensor connector Check the following connectors: lDisconnect the connector, and measure at the harnes
s side.
Check the harness wire between the PCM and MAP se&or
connector. Repair, if necessary. ,
N G
Check the following connectors: Repair
OK
Check trouble symptom.
N G
NG
Repairconnector.
OK
Replace the MAP sensor.
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