Mitsubishi Space Star. Manual - part 22

 

  Index      Mitsubishi     Mitsubishi Space Star - service repair manual 2000 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  20  21  22  23   ..

 

 

Mitsubishi Space Star. Manual - part 22

 

 

GDI  – 

Troubleshooting

13A-15

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 harnesses between the
air flow sensor and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>
and between the air flow sensor
and the engine control relay, and
repair if necessary.

OK

Measure at air flow sensor
connector A-73.



Use test harness (MB991709) to
connect the connector, and
measure at the pick-up harness.



Selector lever position: P



Voltage between terminal 7 and
earth
OK: Engine: Idling

0  – 1 V
Engine speed: 3,000 r/min
6  – 9 V

NG

Check the following connectors:
B-87 <M/T>, B-84 <A/T>

NG

Repair

OK

Check the trouble symptoms.

NG

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.

Check the trouble symptoms.

NG

Check the following connectors:
B-86 <M/T>, B-85 <A/T>

NG

Repair

OK

Measure the output wave form at
air flow sensor connector A-73 (by
using an analyzer).



Use test harness (MB991709) to
connect the connector, and
measure at the pick-up harness.



Engine: Idling



Voltage between terminal 3 and
earth
OK: Waveforms should be dis-

played on P.13A-118 (In-
spection Procedure Using
an Analyzer) and noise
should not be displayed in
the waveform.

NG

Replace the air flow sensor.

OK

Check the trouble symptoms.

NG

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.

OK

OK

Replace the air flow sensor.

OK

Measure at air flow sensor
connector A-73.



Use test harness (MB991709) to
connect the connector, and
measure at the pick-up harness.



Ignition switch: ON



Voltage between terminal 7 and
earth
OK: 7  – 8 V

NG

Check the following connectors:
B-87 <M/T>, B-84 <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

From the previous page

GDI  – 

Troubleshooting

13A-16

Code No. P0105 Barometric pressure sensor system

Probable cause

Range of Check



Two seconds have passed since the ignition switch is turned ON or the
engine starting process is completed.



Battery voltage: 8 V or more

Set Conditions



The sensor output voltage is 4.5 V or more for four seconds (equivalent to
114 kPa of barometric pressure)

or



The sensor output voltage is 0.2 V or less (equivalent to 53 kPa of
barometric pressure)



Malfunction of barometric pressure sensor



Open or short circuit in barometric pressure
sensor circuit or loose connector contact



Malfunction of engine-ECU <M/T>



Malfunction of engine-A/T-ECU <A/T>

(2) NG

Check the following connectors:
B-87 <M/T>,  B-86<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>,
and repair if necessary.

MUT-

II

 Data list

25 Barometric pressure sensor

(Refer to P.13A-99, DATA LIST
REFERENCE TABLE.)

OK

Transient malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)

NG

NG

Repair

OK

Measure at air flow sensor
connector A-73.



Disconnect the connector and
measure at the harness side.

(1) Voltage between terminal 1 and

earth (Ignition switch: ON)
OK: 4.8  – 5.2 V

(2) Resistance between terminal 5

and earth
OK: 

 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 terminal <M/T> or
engine-A/T-ECU terminal <A/T>.



Ignition switch: ON



Voltage between terminal 41
<M/T>, 87 <A/T> and earth
OK: 4.8  – 5.2 V

OK

Check the following connector:
B-86

NG

Repair

NG

Check the following connector:
B-86

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

OK

Check the trouble symptoms.

NG

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.

OK

To the next page

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>.

Check the following connector:
A-73

GDI  – 

Troubleshooting

13A-17

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.

From the previous page

OK

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 51
<M/T>, 65 <A/T> and earth
OK: Altitude 0 m: 3.7 – 4.3 V

Altitude 1,200 m: 
3.2  – 3.8 V

NG

Check the following connectors:
B-86 <M/T>,  B–85<A/T>

NG

Repair

OK

Check the trouble symptoms.

OK

Check the following connectors:
B-86 <M/T>, B-87<A/T>

NG

Repair

NG

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.

OK

Measure at air flow sensor
connector A-73.



Connect connector terminals No.
1, No. 2 and No. 5 only by
using test harness (MB991709),
and measure at the pick-up
harness.



Ignition switch: ON

(1) Voltage between terminal 1 and

earth
OK: 4.8  – 5.2 V

(2) Voltage between terminal 2 and

earth
OK: Altitude 0 m: 3.7 – 4.3 V

Altitude 1,200 m: 
3.2  – 3.8 V

(3) Voltage between terminal 5 and

earth
OK: 0.5 V or less

(1) NG

Check the following connector:
B-86

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.

(3) NG

(2) NG

Replace the air flow sensor.

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>,
and repair if necessary.

Check the trouble symptoms.

Check the following connectors:
B-87 <M/T>, B-86 <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>,
and repair if necessary.

GDI  – 

Troubleshooting

13A-18

Code No. P0110 Intake air temperature sensor system

Probable cause

Range of Check



Two seconds have passed since the ignition switch is turned ON or the
engine starting process is completed.

Set Conditions



The sensor output voltage is 4.6 V or more for four seconds (equivalent to
–45



C of intake air temperature)

or



The sensor output voltage is 0.2 V or more for four seconds (equivalent to
125



C of intake air temperature)



Malfunction of intake air temperature sensor



Open or short circuit in intake air temperature
sensor or loose connector contact



Malfunction of engine-ECU <M/T>



Malfunction of engine-A/T-ECU <A/T>

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

13 Intake air temperature sensor

OK: Roughly the same as am-

bient temperature.

OK

Transient malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)

NG

Check the intake air temperature
sensor itself. 
(Refer to P.13A-105*.)

NG

Repair

OK

Measure at air flow sensor
connector A-73.



Disconnect the connector and
measure at the harness side.

(1) Resistance between terminal 5

and earth
OK: 

 or less

(2) Voltage between terminal 6 and

earth
(Ignition switch: ON)
OK: 4.8  – 5.2 V

(1) NG

NG

Repair

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

OK

Check the trouble symptoms.

NG

Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.

OK

Check following connector: A-73

NG

Repair

(2) 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>.



Disconnect connector A-73.



Ignition switch: ON



Voltage between terminal 62
<M/T>, 64 <A/T> and earth
OK: 4.8  – 5.2 V

OK

Check the following connectors:
B-86 <M/T>, B-85 <A/T>

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

To the next page

Check the following connectors:
B-87 <M/T>, B-86 <A/T>

NOTE
*:

Refer to the ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1).

 

 

 

 

 

 

 

Content   ..  20  21  22  23   ..