Mitsubishi Space Star. Manual — part 34
GDI –
Troubleshooting
13A-63
Code No. P1228 Throttle valve control servo motor
(Motor 2nd phase malfunction) system
Probable cause
Range of Check
Throttle valve control servo relay: ON
System voltage: 8 V or more
Set Conditions
Throttle valve control servo drive circuit is shorted to earth.
Other power source interferes with throttle valve control servo drive circuit.
Throttle valve control servo drive circuit is open-circuit.
Malfunction of the throttle valve control servo
Open circuit or short-circuited harness wire in
throttle valve control servo system, or poor
connector contact
Malfunction of the throttle valve controller
NG
Repair
OK
Check the trouble symptoms.
NG
Replace the throttle valve controller.
Check the throttle valve control
servo (Refer to P.13A-109*).
NG
Replace the throttle body assembly.
OK
NG
Repair
OK
Measure at throttle valve controller
connector B-15.
Measure voltage at the throttle
valve controller connector
terminals.
Ignition switch: ON
The voltage between terminal 1,
9 and earth
(Accelerator pedal:
Fully open to
fully closed)
OK: The battery voltage tempo-
rarily shows a slight de-
crease.
The voltage between terminal
14, 15 and earth
(Accelerator pedal:
Fully closed to
fully open)
OK: The battery voltage show a
slight (approximately 2 V)
decrease.
NG
Check the following connector: A-68
NG
Repair
OK
Check the harness wire between the
throttle valve control servo and the
throttle valve controller.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Check the trouble symptoms.
Check the following connector:
B-15
NOTE
*:
Refer to the ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
GDI –
Troubleshooting
13A-64
Code No. P1500 Alternator FR terminal system
Probable cause
Range of Check
Engine speed: 50 r/min or more
Set Conditions
Input voltage from the alternator FR terminal is system voltage for 20
seconds.
Open circuit in alternator FR terminal circuit
Malfunction of engine-ECU <M/T>
Malfunction of engine-A/T-ECU <A/T>
OK
Check the trouble symptoms.
OK
Intermittent malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)
NG
Replace the alternator.
OK
Check the trouble symptoms.
OK
Check the harness wire between
the intermediate connector 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
Check the harness wire between
the intermediate connector and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
NG
Repair
OK
Check the harness wire between
the intermediate connector and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
NG
Repair
NG
Check the following connectors:
B-86 <M/T>, B-85 <A/T>
NG
Repair
Check the following connector:
A-75
NG
Repair
OK
Measure at intermediate connector
A-75.
Use test harness (MB991658) to
connect the connector, and
measure at the pick-up harness.
Engine: Idling (After warming up)
Radiator fan: Not operating
The voltage between terminal 6
and earth
OK: The voltage drops when
the headlamps are turned
on.
NG
Check the following connector:
A-93
NG
Repair
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Measure at intermediate connector
A-75.
Use test harness (MB991658) to
connect the connector, and
measure at the pick-up harness.
Ignition switch: ON
The voltage between terminal 6
and earth
OK: 9 – 10 V
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
The voltage between terminal 52
<M/T>, 54 <A/T> and earth
OK: 9 – 10 V
NG
Check the following connectors:
B-86 <M/T>, B-85 <A/T>
OK
NG
Repair
OK
Check the following connectors:
B-86 <M/T>, B-85 <A/T>
NG
Replace
Check the harness wire between
the alternator and the intermediate
connector.
GDI –
Troubleshooting
13A-65
Code No. P1515 Brake vacuum sensor system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Sensor output voltage is 4.8 V or more.
or
Sensor output voltage is 0.2 V or less.
Malfunction of the brake vacuum sensor
Improper connector contact, open circuit or
short-circuited harness wire of the brake vacuum
sensor
Malfunction of the engine-ECU <M/T>
Malfunction of the engine-A/T-ECU <A/T>
To the next page.
OK
OK
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 brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T> .
NG
Repair
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
NG
Repair
(2) NG
OK
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 brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T> .
NG
Repair
OK
Check the harness wire between
the brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
NG
Repair
OK
Check the following connector:
B-86
NG
Repair
Check the following connector:
A-70
NG
Repair
OK
Measure at brake vacuum sensor
connector A-70
Disconnect the connector and
measure at the harness side.
(1) The voltage between terminal 3
and earth
(Ignition switch: ON)
OK: 4.8 – 5.2 V
(2) Continuity between terminal 2
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-86 <A/T>.
Measure the voltage at the
engine-ECU <M/T> or engine-
A/T-ECU <A/T> connector
terminals.
Ignition switch: ON
The voltage between terminal 41
<M/T>, 87 <A/T> and earth
OK: 4.8 – 5.2 V
NG
Check the following connector:
B-86
MUT-
II
Data list
66 Brake vacuum sensor
OK: (Refer to P.13A-99, DATA
LIST REFERENCE TABLE.)
OK
Intermittent malfunction (Refer to
GROUP 00 – Points to Note for
intermittent Malfunctions.)
NG
GDI –
Troubleshooting
13A-66
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
OK
Check the trouble symptom.
OK
NG
Repair
NG
NG
Repair
OK
Check the trouble symptoms.
(2) NG
Replace the brake vacuum sensor
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-A/T-ECU terminal.
Engine: Idling
The voltage between 74 and
earth <M/T>
The voltage between 96 and
earth <A/T>
OK: 0.9 – 1.5 V
NG
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
OK
(1) NG
Check the following connector:
B–86
NG
Repair
OK
Check the following connectors:
B-87 <M/T>, B-86 <A/T>
OK
Check the harness wire between
the brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
From the previous page
Check the harness wire between
the brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
Check the harness wire between
the brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
(3) NG
OK
Check the harness wire between
the brake vacuum sensor and the
engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if
necessary.
Check the following connectors:
B–87 <M/T>, B–86 <A/T>
Repair
NG
Check the following connectors:
B–87 <M/T>, B–86 <A/T>
Measure at brake vacuum sensor
connector A
-
70.
Use test harness (MB991348) to
connect terminals, and measure
at the pick-up harness side.
Engine: Idling
(1) The voltage between 3 and earth
OK: 4.8 – 5.2 V
(2) The voltage between 1 and
earth
OK: 0.9 – 1.5 V
(3) The continuity between 2 and
earth
OK: 2
Ω
or less
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