Mitsubishi Space Star. Manual — part 80
DIESEL FUEL –
Troubleshooting
13D-19
Code No. 23 EGR valve position sensor system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Sensor output voltage is 250 mV or less for 1 second
or
Sensor output voltage is 4,700 mV or more for 1 second
Range of Check
Ignition switch: OFF
→
ON
Set Conditions
Sensor output voltage is 1,500 mV or more for 1 second
Malfunction of the EGR valve position sensor
Improper connector contact, open circuit or
short-circuited harness wire of the EGR valve
position sensor circuit
Malfunction of the engine-ECU
NG
Check the following connector: A-121
NG
OK
Measure at the EGR valve connector A-110.
Disconnect the connector and measure at the harness
side.
Voltage between 3 and earth (Ignition switch: ON)
OK: 4.8 – 5.2 V
Continuity between 2 and earth
OK: Continuity
OK
NG
Check the harness wire between the EGR valve position
sensor and the engine-ECU.
Repair
Check the following connectors: A-110, A-121
OK
Check the EGR valve position sensor
(Refer to GROUP 17 – Emission Control System.)
OK
Check trouble symptom.
Repair
NG
Replace the engine-ECU.
OK
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
MUT-
II
Data list
15 EGR valve position sensor (Refer to P.13D-46.)
OK
Repair
NG
Replace the engine-ECU.
NG
Check trouble symptom.
NG
Replace the EGR valve.
Check the harness wire between the EGR valve position
sensor and the engine-ECU (sensor signal line).
OK
NG
Repair
NG
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
DIESEL FUEL –
Troubleshooting
13D-20
Code No. 24 Glow relay box system
Probable cause
Range of Check
Ignition switch: OFF
→
ON
Set Conditions
Trouble signal input from the glow relay box
Malfunction of the glow relay box
Improper connector contact, open circuit or
short-circuited harness wire of the glow relay box
circuit
Malfunction of the engine-ECU
OK
NG
Check the harness wire between the power supply and the
glow relay box, and repair if necessary.
OK
Measure at the glow relay box connector A-111.
Disconnect the connector and measure at the harness
side.
Voltage between 7 and earth (Ignition switch: ON)
OK: System voltage
NG
Check the following connectors: A-105, A-106, A-111,
A-123, A-124
OK
Replace the engine-ECU.
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
MUT-
II
Actuator test
09 Glow relay box (Refer to P.13D-50.)
Check trouble symptom.
NG
Check the harness wire between the glow relay box and the
engine-ECU.
OK
Repair
NG
Repair
NG
OK
Check the harness wire between the glow relay box and the
glow plug.
NG
Check trouble symptom.
Check the glow plug. (Refer to GROUP 16 – Glow system.)
Replace
NG
Repair
NG
Replace the glow relay box.
OK
Check the following connector: A-121
Repair
NG
OK
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
DIESEL FUEL –
Troubleshooting
13D-21
Code No. 25 Immobilizer system
Probable cause
Range of Check
Ignition switch: ON
Set Conditions
Improper communication between the engine-ECU and Immobilizer-ECU
Malfunction of the immobilizer-ECU
Improper connector contact, open circuit or
short-circuited harness wire
Malfunction of the engine-ECU
YES
Check the immobilizer system (Refer to GROUP 54 – Ignition
Switch and Immobilizer System.)
Is a diagnosis code output from the immobilizer-ECU?
Check the following connectors: A-122, B-19, B-36
OK
Check trouble symptom.
Check the harness wire between the immobilizer–ECU and
the engine-ECU.
OK
Repair
NG
Repair
NG
NO
Replace the engine-ECU.
NG
NOTE
If the engine-ECU is replaced, the immobilizer-ECU and ignition key should be replaced together with it.
DIESEL FUEL –
Troubleshooting
13D-22
Code No. 26 EGR valve system
Probable cause
Malfunction of the EGR valve
Improper connector contact, open circuit or
short-circuited harness wire of the EGR valve
circuit
Malfunction of the engine-ECU
NG
NG
OK
Measure at the EGR valve connector A-110.
Disconnect the connector and measure at the harness
side.
Voltage between 6 and earth (Ignition switch: ON)
OK: System voltage
NG
Check the following connectors: A-110, A-121
OK
Check the EGR valve
(Refer to GROUP 17 – Emission Control System.)
Replace the engine-ECU.
OK
INTERMITTENT MALFUNCTIONS
Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions*
MUT-
II
Actuator test
08 EGR valve (Refer to P.13D-50.)
Check the harness wire between the EGR valve and the main
relay, and repair if necessary.
Check trouble symptom.
NG
Repair
NG
OK
Replace the EGR valve.
Check the harness wire between the EGR valve and the
engine-ECU.
OK
Repair
NG
*:
Refer to ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст