Mitsubishi Space Star. Manual — part 29
GDI –
Troubleshooting
13A-43
OK
Measure at engine-ECU connector
B-87 <M/T> or engine-A/T-ECU
connector B-86 <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 94
<M/T>, 95 <A/T> and earth
OK: Accelerator pedal fully re-
leased: 0.985 – 1.085 V
Accelerator pedal fully de-
pressed: 4.0 V or higher
NG
Check the following connectors:
B-87<M/T>, B-86 <A/T>
NG
Repair
OK
Check the following connectors:
B-87<M/T>, B-86 <A/T>
NG
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
Repair
OK
Measure at accelerator pedal
position sensor connector B-94.
Connect connector terminals No.
1, No. 2 and No. 3 only by
using test harness (MB991658),
and measure at the pick-up
harness.
Ignition switch: ON
(1) Voltage between terminal 1 and
earth
OK: 0.5 V or less
(2) Voltage between terminal 2 and
earth
OK: 4.8 – 5.2 V
(3) Voltage between terminal 3 and
earth
OK: Accelerator pedal fully re-
leased: 0.985 – 1.085 V
Accelerator pedal fully de-
pressed: 4.0 V or higher
(1), (2) NG
Check the following connectors:
B-86 <M/T>, B-85 <A/T>
NG
Check the following connectors:
B-87<M/T>, B-86 <A/T>
NG
Repair
OK
Check the harness wire between
accelerator pedal position sensor
(1st channel) and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>,
and repair if necessary.
From the previous page
(3) NG
Adjust the accelerator pedal position
sensor. (Refer to P.13A-121.)
OK
Check the harness wire between
accelerator pedal position sensor
(1st channel) and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>,
and repair if necessary.
OK
Check the harness wire between
accelerator pedal position sensor
(1st channel) and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>,
and repair if necessary.
Repair
GDI –
Troubleshooting
13A-44
Code No. 0225 Throttle position sensor (2nd channel)
system
Probable cause
The throttle valve controller judges a malfunction, and then transmit the result
to the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
Range of Check
Ignition switch: ON
The throttle position sensor (1st channel) is normal.
Set Conditions
The sensor output voltage is 0.2 V or less for four seconds.
or
The sensor output voltage is 4.85 V or more for four seconds, and the
output voltage of the throttle position sensor (1st channel) is 1.2 V or more.
or
The throttle position sensor (1st channel) and throttle position sensor (2nd
channel) combination output voltage is outside 4 – 6 V.
Malfunction of throttle position sensor (2nd
channel)
Open or short circuit in the throttle position
sensor (2nd channel) circuit or loose connector
contact
Malfunction of the throttle valve controller
Malfunction of the engine-ECU <M/T>
Malfunction of the engine-A/T-ECU <A/T>
OK
Check the harness wire between
the throttle position sensor and the
throttle valve controller, and repair if
necessary.
NG
Check throttle position sensor (2nd
channel). (Refer to P.13A-106*.)
NG
Replace
NG
Repair
NG
Check the following connector:
B-15
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the throttle valve controller.
OK
Check the following connector:
A-66
NG
Repair
OK
Check the harness wire between
the throttle position sensor and the
throttle valve controller.
NG
Repair
OK
Check the harness wire between
the throttle position sensor and the
throttle valve controller.
NG
Repair
MUT-
II
Data list
14 Throttle position sensor (2nd
channel)
OK: Refer to P.13A-99, DATA
LIST REFERENCE TABLE.
OK
Intermittent malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)
OK
To the next page
OK
Measure at throttle position sensor
connector A-66.
Disconnect the connector and
measure at the harness side.
(1) The voltage between terminal 1
and earth
(Ignition switch: ON)
OK: 4.8 – 5.2 V
(2) Resistance between terminal 3
and earth
OK: 2
Ω
or less
(1) NG
Measure at throttle valve controller
connector B-15.
Measure the voltage at the
throttle valve controller connector
terminals.
Ignition switch: ON
The voltage between terminal 6
and earth
OK: 4.8 – 5.2 V
OK
Check the following connector:
B-15
(2) NG
Check the following connector:
B-15
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the throttle valve controller.
NOTE
*:
Refer to the ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
GDI –
Troubleshooting
13A-45
OK
Measure at engine-ECU connector
B-87 <M/T> or engine-A/T-ECU
connector B-86 <A/T>.
Measure the voltage at the
engine-ECU terminal <M/T> or
engine-A/T-ECU terminal <A/T>.
Ignition switch: ON
The voltage between terminal 78
and earth
OK: Accelerator pedal fully re-
leased: 4.0 V or more
Accelerator pedal fully de-
pressed: 0.4 – 0.6 V
NG
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
NG
Repair
OK
Check the harness wire between
throttle position sensor (2nd
channel) and the engine-ECU <M/T>
or engine-A/T-ECU <A/T>, and
repair if necessary.
OK
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Measure at throttle position sensor
connector A-66.
Use test harness (MB991536) to
connect the connector, and
measure at the pick-up harness.
Ignition switch: ON
(1) The voltage between terminal 1
and earth
OK: 4.8 – 5.2 V
(2) The voltage between terminal 3
and earth
OK: 0.5 V or less
(3) The voltage between terminal 4
and earth
OK: Accelerator pedal fully re-
leased: 4.0 V or more
Accelerator pedal fully de-
pressed: 0.4 – 0.6 V
(1), (2) NG
NG
Repair
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
NG
Repair
OK
Check the harness wire between
throttle position sensor (2nd channel)
and the throttle valve controller.
From the previous page
(3) NG
Adjust the throttle position sensor.
(Refer to P.13A-96*.)
OK
Check the harness wire between
throttle position sensor (2nd
channel) and the engine-ECU <M/T>
or engine-A/T-ECU <A/T>, and
repair if necessary.
Check the following connector:
B-15
NOTE
*:
Refer to the ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
Code No. P0300 Ignition coil (power transistor) system
Probable cause
Range of Check
Engine speed is approx. 50 – 4,000 r/min.
Engine is not cranking.
Set Conditions
The ignition failure sensor does not send a signal about a certain cylinder
for four seconds.
Malfunction of the ignition coil
Malfunction of the ignition failure sensor
Malfunction of spark plug
Open or short circuit in the primary ignition
circuit or loose connector contact
Malfunction of engine-ECU <M/T>
Malfunction of engine-A/T-ECU <A/T>
GDI –
Troubleshooting
13A-46
NG
Check the spark plug and the
ignition coil for a defective cylinder.
(Refer to GROUP 16 – Ignition
System.)
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Check the harness wire between
the engine-ECU <M/T> or
engine-A/T-ECU <A/T> and the
ignition coil connector for a
defective cylinder.
NG
Repair
OK
Check the following connector:
B-84
NG
Repair
OK
MUT-
II
Actuator Test
01 No. 1 injector
02 No. 2 injector
03 No. 3 injector
04 No. 4 injector
OK: The idling condition should
change.
Reference
When the cylinder (defective
cylinder) where idling condition does
not change is detected after
suspending the injector, go to (1)
and inspect the spark plug, the
ignition coil, the connector, and the
harness of the defective cylinder.
(When more than one cylinder are
detected, inspect all of them.)
When all the cylinders are OK, go
to (2).
(1)
Check the following connectors:
Ignition coil connectors, which
correspond to defective cylinders
(A-85, A-86, A-89, A-91).
NG
Repair
Check the spark plug and the
ignition coil for a defective cylinder.
(Refer to GROUP 16 – Ignition
System.)
NG
Replace
OK
Use an analyzer to measure the signal waveform at engine-ECU connector B-84
<M/T> or engine-A/T-ECU connector B-84 <A/T>.
Engine: Idling
The voltage between the ignition coil primary signal terminal for a defective cylinder
and earth
OK: A normal waveform should be displayed as described on P.13A-118 (Inspec-
tion Procedure Using an Analyzer).
OK
Repair the ignition coil assembly for
a defective cylinder and the spark
plug.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
(2)
Use an analyzer to measure the
signal waveform at the ignition
failure sensor connector A-96.
Use test harness (MB991536) to
connect the connector, and
measure at the pick-up harness.
Engine: Idling
The voltage between terminal 2
and earth
OK: A normal waveform should
be displayed as described
on P.13A-118 (INSPEC-
TION PROCEDURE US-
ING AN ANALYZER).
Reference
When a normal waveform is
displayed, compare it with that of
the ignition coil primary signal at the
engine-ECU terminal <M/T> or
engine-A/T-ECU <A/T> to determine
the cylinder (defective cylinder) with
an abnormal waveform.
→
When one or more cylinders are
abnormal, go to (1)
→
When all of the cylinders are
abnormal, go to (3)
→
When a normal waveform is
displayed, go to (4).
(3)
Check the following connector:
A-86 <M/T>, A-85 <A/T>
NG
Repair
OK
Check the harness wires between
the ignition failure sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and between
the ignition failure sensor and earth.
NG
Repair
OK
Repair the ignition failure sensor.
(4)
Check the trouble symptoms.
OK
Intermittent malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)
(1)
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