Mitsubishi Space Star. Manual — part 21
GDI –
Troubleshooting
13A-11
Malfunctioning item
Control contents during malfunction
Accelerator pedal position sen-
sor (1st channel)
1.
Suspends lean burn operation.
2.
Controls the throttle valve position by using signals from the accelerator pedal
position sensor (2nd channel). (However, this control is not applicable if the
voltage difference between the accelerator pedal position sensor (1st channel)
and accelerator pedal position sensor (2nd channel) is 1.0 V or higher.)
3.
Also suspends the electronic-controlled throttle valve system when the
accelerator pedal position sensor (2nd channel) is defective.
Throttle position sensor (1st
channel)
1.
Suspends lean burn operation.
2.
Controls throttle opening angle feedback by using signals from throttle position
sensor (2nd channel). (However, the controlling system is not applied when
the throttle position sensor (1st channel) and throttle position sensor (2nd
channel) combination output voltage is outside 4 – 6 V.)
3.
Refrains from controlling the throttle opening angle feedback when throttle
position sensor (2nd channel) is also defective.
Electronic-controlled throttle
valve system
1.
Suspends the electronic controlled throttle valve system.
2.
Suspends lean burn operation.
3.
Suspends the idle speed feedback control.
Throttle valve position feed-
back
1.
Suspends the electronic controlled throttle valve system.
2.
Suspends lean burn operation.
3.
Suspends the engine speed feedback control.
Communication line between
the throttle valve controller and
the engine-ECU <M/T> or
engine-A/T-ECU <A/T>
1.
Communication error between the throttle valve controller and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>:
Suspends lean burn operation.
Cuts the fuel supply when the engine speed reaches 3,000 r/min or more.
Suspends the cruise-control.
2.
Communication error between the throttle valve controller and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>:
Suspends lean burn operation.
Cuts the fuel supply when the engine speed reaches 3,000 r/min or more.
Suspends the cruise-control.
The throttle valve controller controls the throttle valve opening angle by
using signals from accelerator pedal position sensor (2nd channel).
Throttle control servo motor 1st
phase malfunction
Bans lean burn operation.
Throttle control servo motor
2nd phase malfunction
1.
Suspends electronic control throttle valve system.
2.
Bans lean burn operation.
3.
Bans engine speed feed back control.
Misfiring
If the detected misfiring causes damage to the catalyst, the misfiring cylinder will be
shut down.
NOTE
If the electronic-controlled throttle valve system is suspended, the engine warning lamp will illuminate.
GDI –
Troubleshooting
13A-12
INSPECTION CHART FOR DIAGNOSIS CODES
Code No.
Diagnosis item
Reference page
P0100
Air flow sensor system
13A-14
P0105
Barometric pressure sensor system
13A-16
P0110
Intake air temperature sensor system
13A-18
P0115
Engine coolant temperature sensor system
13A-19
P0120
Throttle position sensor 1 (1st channel) system
13A-22
P0125
Feedback system
13A-24
P0130
Oxygen sensor (front) system <sensor 1>
13A-26
P0135
Oxygen sensor heater (front) system <sensor 1>
13A-28
P0136
Oxygen sensor (rear) system <sensor 2>
13A-29
P0141
Oxygen sensor heater (rear) system <sensor 2>
13A-31
P0170
Abnormal fuel system
13A-32
P0190
Abnormal fuel pressure
13A-34
P0201
No. 1 injector system
13A-35
P0202
No. 2 injector system
13A-37
P0203
No. 3 injector system
13A-38
P0204
No. 4 injector system
13A-39
P0220
Accelerator pedal position sensor (1st channel) system
13A-41
P0225
Throttle position sensor (2nd channel) system
13A-44
P0300
Ignition coil (power transistor) system
13A-45
P0301
No. 1 cylinder misfire detected
13A-47
P0302
No. 2 cylinder misfire detected
13A-47
P0303
No. 3 cylinder misfire detected
13A-47
P0304
No. 4 cylinder misfire detected
13A-47
P0325
Detonation sensor system
13A-48
P0335
Crank angle sensor system
13A-48
P0340
Camshaft position sensor system
13A-50
P0403
EGR valve system
13A-52
P0420
Catalyst malfunction
13A-54
P0443
Purge control solenoid valve system
13A-55
P0500
Vehicle speed sensor system
13A-56
P1200
Injector driver system
13A-56
P1220
Electronic-controlled throttle valve system
13A-57
GDI –
Troubleshooting
13A-13
Code No.
Reference page
Diagnosis item
P1221
Throttle valve position feedback system
13A-58
P1223
Communication line with throttle valve controller
13A-59
P1224
Throttle valve control servo motor (motor 1st phase malfunction) system
13A-60
P1225
Accelerator pedal position sensor (2nd channel) system
13A-61
P1228
Throttle valve control servo motor (motor 2nd phase malfunction) system
13A-63
P1500
Alternator FR terminal system
13A-64
P1515
Brake vacuum sensor system
13A-65
P1610
Immobilizer system
13A-67
NOTE
1.
Do not replace the engine-ECU <M/T> or engine-A/T-ECU <A/T> until a through terminal check reveals
there are no short/open circuit.
2.
Check that the engine-ECU <M/T> or engine-A/T-ECU <A/T> earth circuit is normal before checking
for the cause of the problem.
3.
After the engine-ECU <M/T> or engine-A/T-ECU <A/T> has detected a malfunction, a diagnosis code
is recorded the next time the engine is started and the same malfunction is re-detected. However,
for items marked with a “
”, the diagnosis code is recorded on the first detection of the malfunction.
4.
Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates
the sensor mounted at the position second closest to the engine.
GDI –
Troubleshooting
13A-14
INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
Code No. P0100 Air flow sensor system
Probable cause
Range of Check
Engine speed: 500 r/min or more
Set Conditions
The sensor output frequency is 3.3 Hz or less for four seconds.
Malfunction of air flow sensor
Open or short circuit in air flow sensor circuit or
loose connector contact
Malfunction of engine-ECU <M/T>
Malfunction of engine-A/T-ECU <A/T>
OK
(3) NG
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
NG
Repair
(2) NG
Check the following connector:
B-26
NG
Repair
OK
Check the harness between the air
flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>,
and repair if necessary.
MUT-
II
Data list
12 Air flow sensor (Refer to
P.13A-99, DATA LIST REFERENCE
TABLE.)
OK
Transient malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)
NG
Check the following connector:
A-73
NG
Repair
OK
Measure at air flow sensor
connector A-73.
Disconnect the connector and
measure at the harness side.
(1) Voltage between terminal 3 and
earth (Ignition switch: ON)
OK: 4.8 – 5.2 V
(2) Voltage between terminal 4 and
earth (Ignition switch: ON)
OK: System voltage
(3) Resistance between terminal 5
and earth
OK: 2
Ω
or less
(1) NG
Measure at engine-ECU connector
B-86 <M/T> or engine-A/T-ECU
connector B-85 <A/T>.
Measure the voltage at the
engine-ECU terminal <M/T> or
engine-A/T-ECU terminal <A/T>.
Ignition switch: ON
Voltage between terminal 61
<M/T>, 65 <A/T> and earth
OK: 4.8 – 5.2 V
OK
Check the following connectors:
B-86 <M/T>, B-85 <A/T>
NG
Repair
NG
Check the following connectors:
B-86 <M/T>, B-85 <A/T>
NG
Repair
OK
Check the harness between the air
flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>.
NG
Repair
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Check the harness between the air
flow sensor and the engine control
relay, and repair if necessary.
OK
Check the harness between the air
flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>.
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
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