Mitsubishi Montero Sport (2004+). Manual — part 518
IGNITION SWITCH
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CHASSIS ELECTRICAL
54-59
STEP 3. Check combination meter connector C-05 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is combination meter connector C-05 in good
condition?
YES : Repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection
. Confirm that
scan tool MB991958 communicates normally.
NO : Go to Step 4.
AC2018743
3 2
6 5 4
7
8
9
1110
1
12
1413
CONNECTOR: C-05
C-05 HARNESS CONNECTOR
C-05
AC201843 AB
IGNITION SWITCH
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CHASSIS ELECTRICAL
54-60
STEP 4. Check the harness wires between
immobilizer-ECU connector C-107 and combination meter
connector C-05.
Q: Are immobilizer-ECU connector C-107 and combination
meter connector C-05 damaged?
YES : Repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection
.
NO : Repair the combination meter (printed-circuit board)
. Then go to Step 5.
STEP 5. Recheck for malfunction.
Q: Is a malfunction eliminated?
YES : The procedure is complete. (If no malfunctions are
found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Point
− How to
Cope with Intermittent Malfunction
.)
NO : Go to Step 1.
AC202606
C-107
1
2
7
6
3
4
5
12 11 10 9 8
CONNECTOR: C-107
AC
COMPONENT SIDE
AC2018743
3 2
6 5 4
7
8
9
1110
1
12
1413
CONNECTOR: C-05
C-05 HARNESS CONNECTOR
C-05
AC201843 AB
IGNITION SWITCH
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CHASSIS ELECTRICAL
54-61
INSPECTION PROCEDURE 4: Engine does not Start (Cranking but no Initial Combustion).
.
TECHNICAL DESCRIPTION (COMMENT)
If the fuel injectors are not operating, there might be
a problem with the MFI system in addition to a mal-
function of the immobilizer system. It is normal for
this to occur if an attempt is made to start the engine
using a key that has not been properly registered.
.
TROUBLESHOOTING HINTS
• Malfunction of MFI system
• Malfunction of immobilizer-ECU
.
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B (Vehicles without
CAN communication system)
STEP 1. Check the battery positive voltage.
Measure the battery positive voltage during cranking.
Q: Is the voltage 8 volts or more?
YES : Go to Step 2.
NO : Check the battery. Refer to
should start.
STEP 2. Using scan tool MB991958, read the any
diagnostic trouble code.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch "ON" position.
(3) Read the immobilizer system diagnostic trouble code and
MFI system diagnostic trouble code.
Q: Which DTC resets, the immobilizer system DTC or the
MFI system DTC?
Immobilizer system DTC : Refer to
MFI system DTC : Refer to GROUP 13A, Diagnosis
No DTC : Go to Step 3.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
IGNITION SWITCH
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CHASSIS ELECTRICAL
54-62
STEP 3. Check the starting system.
Q: Does the engine start?
YES : Go to Step 4.
NO : Refer to GROUP 13A, Diagnosis
− Symptom Chart
. If a malfunction is not resolved, replace the
immobilizer-ECU. Then register the password (secret
code) and encrypted code. (Refer to
.) The
engine should start.
STEP 4. Recheck for malfunction.
Q: Is a malfunction eliminated?
YES : The procedure is complete. (If no malfunction are
found in all steps, an intermittent malfunction is
suspected. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
.)
NO : Replace the immobilizer-ECU.
DATA LIST REFERENCE TABLE
M1543007300370
CHECK AT IMMOBILIZER-ECU
M1543007600348
TERMINAL VOLTAGE CHECK
MUT-III SCAN TOOL
DISPLAY
ITEM
NO.
INSPECTION ITEM
INSPECTION
REQUIREMENT
NORMAL CONDITION
KEY REGISTERED
01
Key has been registered -
Number of registered ignition
keys
ACX01564 AB
TERMINAL NO.
SIGNAL
CHECKING
REQUIREMENT
TERMINAL VOLTAGE
3
Immobilizer-ECU ground Always
0V
5
Powertrain control
module
−
−
7
Immobilizer-ECU power
supply
Ignition switch: "LOCK"
(OFF)
0V
Ignition switch: "ON"
Battery positive voltage
9
"SECURITY" indicator
control
"SECURITY" indicator
light is not illuminated
Battery positive voltage
"SECURITY" indicator
light is illuminated
2 volts or less
10
Ignition key ring antenna −
−
11
Ignition key ring antenna −
−
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