Mitsubishi Lancer Evolution IX. Manual - part 269
IGNITION SWITCH
CHASSIS ELECTRICAL
54A-13
TECHNICAL DESCRIPTION (COMMENT)
• This malfunction may be caused by a defective
immobilizer-ECU, engine-ECU, or a defect in the
communication line between the immobi-
lizer-ECU and engine-ECU. If this malfunction
appears when the MPI system and M.U.T.-II/III
can communicate each other, MPI system diag-
nosis code No.P0513 will reset.
• If the MPI system is normal, the engine control
relay can be determined as normal. In addition, if
the MPI system and M.U.T.-II/III can communi-
cate each other, the circuits between the diagno-
sis connector and the engine-ECU can
determined as normal.
NOTE: If this malfunction appears, MPI system diag-
nosis code No.P0513 will be set.
TROUBLESHOOTING HINTS
• Malfunction of the immobilizer-ECU.
• Malfunction of the engine-ECU.
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector.
DIAGNOSIS PROCEDURE
STEP 1. Check if M.U.T.-II/III can communicate
with the MPI system and if an MPI system
diagnosis code other than P0513 is set.
Q: Can M.U.T.-II/III communicate with the MPI system?
Is an MPI system diagnosis code other than P0513
set?
YES :
Go to Step 2.
NO :
Refer to GROUP 13A, Troubleshooting
.
STEP 2. Voltage measurement at
immobilizer-ECU connector C-207-1.
AC310479
Connector: C-207-1 <L.H. drive vehicles>
Harness side
AH
AC310481
Connector: C-207-1 <R.H. drive vehicles>
Harness side
AH
(1) Disconnect immobilizer-ECU connector C-207-1.
(2) Turn the ignition switch to the "ON" position.
AC304844AC
Connector C-207-1
(Harness side)
(3) Measure the voltage between terminal 1 and
earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 3.