Mitsubishi Space Star. Manual — part 78
DIESEL FUEL –
Troubleshooting
13D-11
Code No. 14 Accelerator pedal position sensor (2nd
channel) system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Sensor output voltage is 200 mV or less
or
Sensor output voltage is 2,500 mV or more
Range of Check
Ignition switch: ON
Set Conditions
Output difference compared to accelerator pedal position sensor (1st
channel) is 6 % or more
Malfunction of the accelerator pedal position
sensor (2nd channel)
Improper connector contact, open circuit or
short-circuited harness wire of the accelerator
pedal position sensor (2nd channel) circuit
Malfunction of the engine-ECU
Repair
NG
OK
Measure at the accelerator pedal position sensor connector B-93.
Disconnect the connector and measure at the harness
side.
Voltage between 2 and earth (Ignition switch: ON)
OK: 4.8 – 5.2 V
Continuity between 6 and earth
OK: Continuity
NG
Check the following connectors: B-89, A-122
OK
MUT-
II
Data list
09 Accelerator pedal position sensor (2nd channel)
(Refer to P.13D-46.)
OK
Check the harness wire between the accelerator pedal
position sensor and the engine-ECU.
Replace
NG
Check the following connectors: B-89, B-93, A-122
NG
Repair
NG
NG
OK
Check the harness wire between the accelerator pedal
position sensor and the engine-ECU (sensor signal line).
OK
Check trouble symptom.
OK
Check trouble symptom.
Repair
NG
Replace the engine-ECU.
NG
NG
Replace the engine-ECU.
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
Check the accelerator pedal position sensor (2nd channel)
(Refer to P.13D-53.)
NG
OK
Repair
NG
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
DIESEL FUEL –
Troubleshooting
13D-12
Code No. 15 Fuel pressure sensor system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Sensor output voltage is 250 mV or less
or
Sensor output voltage is 4,750 mV or more
Range of Check
During engine running
Set Conditions
Fuel pressure varies greatly from command value
Malfunction of the fuel pressure sensor
Improper connector contact, open circuit or
short-circuited harness wire of the fuel pressure
sensor circuit
Malfunction of the engine-ECU
OK
Replace the engine-ECU.
NG
Repair
NG
NG
Check the harness wire between the fuel pressure sensor
and the engine-ECU (sensor signal line).
NG
Check trouble symptom.
Replace the fuel pressure sensor.
NG
OK
Check trouble symptom.
OK
Repair
NG
Check the following connectors: A-119, A-121
OK
Repair
NG
Replace the engine-ECU.
Check the harness wire between the fuel pressure sensor and
the engine-ECU.
NG
OK
Check trouble symptom.
Repair
NG
NG
Check the following connector: A-120, A-121
Measure at the fuel pressure sensor connector A–119.
Disconnect the connector and measure at the harness
side.
Voltage between 1 and earth (Ignition switch: ON)
OK: 4.8 – 5.2 V
Continuity between 3 and earth
OK: Continuity
NG
OK
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
MUT-
II
Data list
06 Fuel pressure sensor (Refer to P.13D-46.)
OK
NG
Replace the engine-ECU.
NG
Check trouble symptom.
MUT-
II
Data list
07 Fuel pressure sensor (command value)
(Refer to P.13D-46.)
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
DIESEL FUEL –
Troubleshooting
13D-13
Code No. 16 Boost sensor system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Sensor output voltage is 100 mV or less for 1 second
or
Sensor output voltage is 4,900 mV or more for 1 second
Range of Check
Engine speed: 900 r/min or less
Set Conditions
Variation from barometric pressure sensor output signal is 15 kPa or more
for 4.6 seconds
Malfunction of the boost sensor
Improper connector contact, open circuit or
short-circuited harness wire of the boost sensor
circuit
Malfunction of the engine-ECU
OK
Replace the engine-ECU.
NG
Repair
Check the harness wire between the boost sensor and the
engine-ECU (sensor signal line).
NG
Check trouble symptom.
Replace the boost sensor.
NG
OK
Check trouble symptom.
OK
Repair
NG
Check the following connectors: A-112, A-121
Replace the engine-ECU.
NG
Check trouble symptom.
OK
Repair
NG
Check the harness wire between the boost sensor and the
engine-ECU.
OK
Repair
NG
NG
Check the following connectors: A-120, A-121
Measure at the boost sensor connector A-122.
Disconnect the connector and measure at the harness
side.
Voltage between 1 and earth (Ignition switch: ON)
OK: 4.8 – 5.2 V
Continuity between 3 and earth
OK: Continuity
NG
OK
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
MUT-
II
Data list
04 Boost sensor (Refer to P.13D-46.)
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
DIESEL FUEL –
Troubleshooting
13D-14
Code No. 17 Barometric pressure sensor system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Sensor output voltage is 200 mV or less for 1 second
or
Sensor output voltage is 4,950 mV or more for 1 second
Malfunction of the barometric pressure sensor
Malfunction of the engine-ECU
OK
Replace the engine-ECU.
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
MUT-
II
Data list
05 Barometric pressure sensor (Refer to P.13D-46.)
Check trouble symptom.
NG
NG
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
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