Mitsubishi Lancer Evolution X. Manual - part 323
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-357
STEP 7. Measure the power supply voltage at ECM
connector B-09 by using power plant ECU check harness
special tool MB992110.
(1) Disconnect all ECM connectors. Connect the power plant
ECU check harness special tool MB992110 between the
separated connectors.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 52 and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 8.
NO : Check harness connector A-13 at intermediate
connector for damage, and repair or replace as
required. Refer to GROUP 00E, Harness Connector
Inspection
. If intermediate connector is in
good condition, repair harness wire between
turbocharger wastegate solenoid 1 connector A-10
(terminal No. 2) and ECM connector B-09 (terminal
No. 52) because of open circuit or short circuit to
ground. Then go to Step 10.
STEP 8. Check for harness damage between MFI relay
connector A-34X (terminal No. 2) and turbocharger
wastegate solenoid 1 connector A-10 (terminal No. 1).
Q: Is the harness wire in good condition?
YES : Go to Step 9.
NO : Repair it. Then go to Step 10.
AK604040
ECM
AB
Body side harness
MB992110
AK704407
16 15 14 13 12 11 10 9 8 7 6 5 4 3
2
1
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
AB
Power plant ECU
check harness connector