Mitsubishi 380. Manual — part 488
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-44
STEP 8. Check harness connector B-20 at ENGINE-ECU for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
16DB400A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-45
STEP 9. Check for harness damage between MPI relay
connector B-17X (terminal No. 4) and right bank heated
oxygen sensor (rear) connector B-08 (terminal No. 4).
Q: Is the harness wire in good condition?
YES : Go to Step 10.
NO : Repair it. Then go to Step 11.
1
2
3
4
AK303017
CONNECTOR: B-17X
FRONT OF VEHICLE
B-17X
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
RELAY BOX
AK303064
1
2
3
4
THROTTLE BODY
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: B-08
B-08 (GR)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-46
STEP 10. Check for harness damage between right bank
heated oxygen sensor (reart) connector B-08 (terminal No.
3) and ENGINE-ECU connector B-20 (terminal No. 32).
Q: Is the harness wire in good condition?
YES : Go to Step 11.
NO : Repair it. Then go to Step 11.
STEP 11. Test the EOBD drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0037 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
16DB400A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
AK303064
1
2
3
4
THROTTLE BODY
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: B-08
B-08 (GR)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPOINT FUEL INJECTION (MPI)
13A-47
DTC P0038: Heated Oxygen Sensor Heater Circuit high (bank 1, sensor 2).
.
CIRCUIT OPERATION
• Power is supplied from the MPI relay (terminal
No. 4) to the right bank heated oxygen sensor
(rear) heater.
• The ENGINE-ECU (terminal No. 32) controls
continuity to the right bank heated oxygen sensor
(rear) heater by turning the power transistor in the
ENGINE-ECU "ON" and "OFF".
.
TECHNICAL DESCRIPTION
• The ENGINE-ECU checks whether the heater
current is within a specified range when the
heater is energized.
.
DTC SET CONDITIONS
Check Conditions
• Battery voltage is within 9.04 to 16.01 volts.
• Engine speed is above 801 r/min.
Judgment Criteria
• IC internal test (short circuit to battery).
• MIL is activated after 2 Driving Cycles.
• No limp home mode.
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
AK303014
CONNECTOR: B-17X
MFI RELAY
MFI RELAY
FRONT OF VEHICLE
B-17X
AB
16DB400A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
AK303063
THROTTLE BODY
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: B-08
B-08 (GR)
AB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст