Mitsubishi Montero (2002-2004). Manual — part 185
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-9
.
HARNESS INSPECTION
Check for an open or short circuit in the harness
between the terminals which were faulty according to
the connector measurements. Carry out this inspec-
tion while referring to GROUP 00E, Harness Con-
nector Inspection. Here, "Check harness between
power supply and terminal xx" also includes check-
ing for blown fuse. For inspection service points
when there is a blown fuse, refer to "Inspection Ser-
vice Points for a Blown Fuse."
.
MEASURES TO TAKE AFTER REPLACING THE
ECU
If the trouble symptoms have not disappeared even
after replacing the ECU, repeat the inspection proce-
dure from the beginning.
ACX00862
(5) Explains about technical details.
(6) Describes the conditions for that DTC
being set (stored).
(7) Describes possible
cause(s)for that DTC.
(8) Start of the diagnosis procedure
for that DTC.
(9) Identifies the special tool(s)
necessary for diagnosing that DTC.
(10) Provides the inspection procedure
for that DTC step by step.
lower
or
.
AH
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-10
CONNECTOR MEASUREMENT SERVICE POINTS
Turn the ignition switch to "OFF" when connecting and discon-
necting the connectors. Turn the ignition switch to "ON" when
measuring if there are no instructions to the contrary.
.
IF INSPECTING WITH THE CONNECTOR CONNECTED
(WITH CIRCUIT IN A CONDITION OF CONTINUITY)
Required Special Tool:
MD998459: Test Harness
Waterproof Connectors
Be sure to use special tool, MD998459. Never insert a test
probe from the harness side, as this so will reduce the water-
proof performance and result in corrosion.
Ordinary (non-waterproof) Connectors
Check by inserting the test probe from the harness side. Note
that if the connector (control unit, etc.) is too small to permit
insertion of the test probe, it should not be forced; use the
backprobing tool for this purpose.
.
IF INSPECTING WITH THE CONNECTOR DISCONNECTED
<When Inspecting a Female Pin>
From front side of the connector
Required Special Tool:
MB991219: Inspection Harness (contained in MB991223 Test
Harness)
The inspection harness for connector pin contact pressure
should be used. The test probe should never be forcibly
inserted, as it may cause a defective contact.
From back side of the connector (SRS-ECU harness side con-
nector)
ACX00863 AB
MD998459
AC001606AB
CONNECTOR
ACX00865 AB
MB991219
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-11
Since the SRS-ECU harness connector is plated to improve
conductivity, observe the warning below when checking this
connector.
WARNING
Insert the backprobing tool into connector from har-
ness side, and connect the tester to the backprobing
tool. If any tool other than the backprobing tool is
used, it may cause damage to the harness and other
components. Furthermore, measurement should not
be carried out by touching the backprobing tool
directly against the terminals from the front of the
connector. The terminals are plated to increase their
conductivity, so that if they are touched directly by
the backprobing tool, the plating may break, which
will decrease reliability.
<When Inspecting a Male Pin>
CAUTION
At this time, be careful not to short the connector pins with
the test probes. To do so may damage the circuits inside
the ECU.
Touch the pin directly with the test bar.
AC001607
SRS-ECU HARNESS
CONNECTOR
AB
ACX00867 AB
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-12
CONNECTOR INSPECTION SERVICE POINTS
.
VISUAL INSPECTION
• Connector is disconnected or improperly connected
• Connector pins are pulled out
• Due to harness tension at terminal section
• Low contact pressure between male and female terminals
• Low connection pressure due to rusted terminals or foreign
matter lodged in terminals
.
CONNECTOR PIN INSPECTION
If the connector pin stopper is damaged, the terminal connec-
tions (male and female pins) will not be perfect even when the
connector body is connected, because the pins may pull out of
the back side of the connector. Therefore, gently pull the wires
one by one to make sure that no pins pull out of the connector.
.
ACX00868 AB
CONNECTOR DISCONNECTED OR
IMPROPERLY CONNECTED
DEFECTIVE CONNECTOR CONTACT
HARNESS WIRE BREAKAGE
AT TERMINAL SECTION
LOW CONTACT
PRESSURE
GOOD
BAD
ACX00869AB
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