Mitsubishi Space Star. Manual - part 23
GDI –
Troubleshooting
13A-19
OK
Measure at air flow sensor
connector A-73.
Use the test harness
(MB991709) to connect only
terminals 5 and 6, and then
measure at the pick-up harness.
Ignition switch: ON
Voltage between terminal 6 and
earth
OK: Ambient temperature 0
C:
3.2 – 3.8 V
Ambient temperature 20
C:
2.3 – 2.9 V
Ambient temperature 40
C:
1.5 – 2.1 V
Ambient temperature 80
C:
0.4 – 1.0 V
NG
Check the following connectors:
B-86, B-87 <M/T>, B-85, 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.
OK
Check the trouble symptoms.
NG
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
From the previous page
Code No. P0115 Engine coolant temperature sensor
system
Probable cause
Range of Check
Engine: Two seconds after the engine has been started
Set Conditions
The sensor output voltage is 4.6 V or more for four seconds (equivalent to
–45
C of engine coolant temperature)
or
The sensor output voltage is 0.1 V or less for four seconds (equivalent to
140
C of engine coolant temperature)
Malfunction of engine coolant temperature sensor
Open or short circuit in the engine coolant
temperature sensor circuit or loose connector
contact
Malfunction of engine-ECU <M/T>
Malfunction of engine-A/T-ECU <A/T>
Range of Check
Engine: After starting
Set Conditions
The engine coolant temperature has reduced from over 40
C to less than
40
C, and that condition has lasted for five minutes or more.