ignition MITSUBISHI SPYDER 1990 Service Workshop Manual

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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Scan tool 10
Code
No.General scan tool r e l a y r e l a y )
42
[Comment]
Background
lThe relay (ASD relay) controls the battery voltage sup plied to the fuel injectors, ignitioncoils, and generator.
l The PCM provides a ground path for the relay (ASD relay).
l This DTC indicates an open or short-circuit conditi on in the control circuit.
Range of Check
l Battery voltage:
or more
l Ignition switch: ON
Set Condition
l Open or short circuit is detected in the
relay (ASD relay) for 3 seconds. l
Relay coil open or shorted
l relay shortedl circuit in
Check the relay (ASD relay) (Refer to
OK
NG Replace
Measure at the
relay (ASD relay) connector lDisconnect the connector, and measure at the harnes s side.
l Voltage between 6 and ground
OK: Battery positive voltage
OK
connector and the battery., Repair, if necessary.
N G
Repair ,
OK .
Check trouble symptom.
Check the harness wi
relay)
OK
NG Repair
Replace the PCM.
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(NON-TURBO)> Troubleshooting
Scan tool 11
General scan tool G e n e r a t o r F i e l d N o t S w i t c h i n g
.
41
[Comment]Background
Properly
.
l Field driver circuit open or
l The PCM receives generator field input.lBattery voltage is supplied to the generator throug h the relay relay).
Range of Check
l Ignition switch: ON
l
relay (ASD relay): ON
Set Condition
l Open or short circuit is detected in the generator field control circuit.l
Generator internal o p en o r
l PCM failed ,
SCAN TOOL Actuator test
10 relay (ASD relay) Repair the relay relay) related
OK: The relay operating sound can be heard
OK
Measure at the generator connector lDisconnect the connector, and measure at the harnes s side.
SCAN TOOL Actuator test 10
relay (ASD relay) relay is turned on 1 l Voltage between 1 and ground
[Measure with the relay (ASD relay) on]
OK: Battery positive voltage
NG Check the harness wire the and relay) connector. Repair,’ if
NGMeasure at the generator connector Disconnect the connector and measure at the compone nt side. Repair the generator, and replace if necessary ll Continuity between 2 and generator body
OK: No continuity
OKNGCheck the harness wire between the PCM and the gene rator Repairconnector.
OK
Check the following connectors:
Repair
Check trouble symptom.
NG
Repair the generator, and replace if necessary.I

Scan tool 16
General scan tool A/C Clutch Relay Circuit ,.
33
[Comment]Coinpressor clutch relay shortedBackgroundl control circuit defectivel The PCM provides a switched ground to the clutch relay.
l circuit driver in PCMlThe PCM can prevent operation of the clutch in selected situations such as duringwide-open or for a period at start-up.l This DTC indicates an open or short-circuit conditi on in the circuit.Range of Checkl Ignition ONl Battery voltage: or morel 30 seconds or more after starting engineSet ConditionlOpen or short circuit is detected in the A/C clutch relay control circuit for 3 seconds.
N G relay. Replace
. .
. 55 On-vehicle Service) me (Refer to GROUF
OK
Measure at the PCM connectors and lDisconnect the connector, and measure at the harnes s side.
l Voltage between 36 and ground, and 64 and ground
(Ignition switch: ON)
switch: ON)
OK: Battery positive
l Connect a jumper wire between and the ground.
(Ignition switch: ON)
(A/C switch: ON)
OK:
compressor clutch is turned on
N G
Check the system (Refer to GROUP 55 Troubleshooting) Check trouble symptom.
NG
Replace the . ,
I ,
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Scan tool 17
C o d e G e n e r a l s c a n
No.
32I
[Comment]
Background Open short
l The PCM provides a switched ground path to the sole noid. Open o u t p u t or shorted l This DTC indicates an open or short-circuit conditi on in the control circuit.Range of Checkl Battery voltage: or morel Ignition switch: ONSet ConditionlOpen or short circuit is detected in the electric E GR transducer solenoid for 3 seconds.
I . . ,.. .
Replace (Refer to GROUP 17 Emission Control System)
OK
Measure at the electric transducer solenoid connector lDisconnect the connector and measure a the harness side.
l Voltage between 2 and ground
switch: ON) Battery positive voltage
.N G Check the following connectors:
O K
Check
Check the wire between Repair, necessary. ,
NGMeasure at the PCM connector Check the following lDisconnect the connector and measure at the harness side.
l Voltage between 40 and ground
(Ignition switch: ON)
OK: Battery positive voltage
Check the harness wire between PCM and solenoid connector. Repair, if necessary.
Check the following Repair
OK
Check trouble svmptom.
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the PCM.
NG

. .
Scan tool 18
Code
No.
General Circuit
31
[Comment]
Background
lIt is operated asa PCM output providing a switched ground path once the vehicle enters
closed loop operation.
l This DTC indicates a short or
condition in the circuit.
Range of Check
Battery voltage: or more
l Ignition switch: ON
Set Condition
lOpen or short circuit is detected in the EVAP purge control solenoid control circuit for
3 seconds.
Open or short control circuit
l Open fused output , l O p e n or solenoid l . . .
Check the evaporative emission NG Replace
(Refer to GROUP 17 Emission Control System.)
OKNG. . .
Check the following connectors: Measure at the evaporative purge solenoid connector
lDisconnect the connector and measure at the harness side.
l Voltage between 1 and ground
(Ignition switch: ON)
OK: Battery positive voltage
/OK
Measure at the PCM connector lDisconnect the connector and measure at the harness side.
l Voltage between 66 and ground
switch: ON) Battery positive
Check the harness wire, between and Repair, if necessary.
NG
Check the harness wire between the and connector. Repair, if necessary.
N G Repair
Check trouble symptom.
NG
Replace the PCM.
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ENGINE (NON-TURBO)>
Scan tool 25
Code General scan tool
No. Air Control Motor Circuits
25,
[Comment]l Driver circuit shorted to groundBackgroundl Driver circuit shorted to batterylThe idle air stepper motor is used to prevent the engine from at
l shorted to togetheridle.l PCM failed
With the throttle plate completely placing a load on the engine (A/C or power l Shorted motor
steering operation) might cause the engine to stall or run rough.
lAs the PCM anticipates load, it operates the motor, opening the throttle bypass passageand allowing more air into the intake manifold.
l Malfunction of this system cause rough idle and emissions.lThe PCM cannot detect an open circuit or determine if the stepper motor is stuck in
one position.
Range of Check
l Battery
10 or more . .
l ignition switch: ON
Set Condition
lA short or open circuit condition is detected in a motor circuit for 3 seconds.
Check the idle air motor. (Refer to Replace
Check NG Repair
OK
Check trouble symptom.
N G
NG
harness wire between PCM and the 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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