Mitsubishi Montero Sport (2004+). Manual — part 63
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-11
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
<WATERPROOF CONNECTORS>
Be sure to use special tool. Never insert a test probe from the
harness side, as this will reduce the waterproof performance
and result in corrosion.
.
IF INSPECTING WITH THE CONNECTOR CONNECTED
<ORDINARY (NON-WATERPROOF) CONNECTORS>
Check by inserting the multi-meter 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 (Included in MB991223,
Harness Set)
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.
ACX00863AE
SPECIAL TOOL
AC001606AB
CONNECTOR
ACX00865 AB
MB991219
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-12
From back side of the connector (SRS-ECU harness side con-
nector)
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 the connector from
the harness side, and connect the tester to the back-
probing 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 backprob-
ing 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.
.
IF INSPECTING WITH THE CONNECTOR DISCONNECTED
<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>
00-13
CONNECTOR INSPECTION SERVICE POINTS
.
VISUAL INSPECTION
• Connector is disconnected or improperly connected
• Connector pins are pulled out
• Stretched an broken wires 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.
.
ACX00868AC
CONNECTOR DISCONNECTED OR
IMPROPERLY CONNECTED
STRETCHED OR BROKEN WIRES
HARNESS WIRE BREAKAGE
AT TERMINAL SECTION
LOW CONTACT
PRESSURE
GOOD
BAD
ACX00869AB
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS
TSB Revision
GENERAL <BODY AND CHASSIS>
00-14
CONNECTOR ENGAGEMENT INSPECTION
Required Special Tool:
MB991219: Inspection Harness (contained in MB991223 Test
Harness)
Use special tool, MB991219 to inspect the engagement of the
male pins and female pins. [Pin drawing force: 1 N (0.2 pound)
or more]
HOW TO COPE WITH INTERMITTENT
MALFUNCTIONS
Most intermittent malfunctions occur under certain
conditions. If those conditions can be identified, the
cause will be easier to find.
.
TO COPE WITH INTERMITTENT MALFUNCTION
1. Ask the customer about the malfunction
• Ask what it feels like, what it sounds like, etc.
Then ask about driving conditions, weather, fre-
quency of occurrence, and so on.
2. Determine the conditions from the customer's
responses
• Typically, almost all intermittent malfunctions
occur from conditions like vibration, temperature
and/or moisture change, poor connections. From
the customer's responses, it should be reasoned
which condition is most likely.
3. Use simulation test
• In the cases of vibration or poor connections, use
the simulation tests below to attempt to duplicate
the customer's complaint. Determine the most
likely circuit(s) and perform the simulation tests
on the connectors and parts of that circuit(s). Be
sure to use the inspection procedures provided
for diagnostic trouble codes and trouble symp-
toms.
For temperature and/or moisture condition
related intermittent malfunctions, try to change
the conditions of the suspected circuit compo-
nents, then use the simulation tests below.
4. Verify the intermittent malfunction is elimi-
nated
• Repair the malfunctioning part and try to dupli-
cate the condition(s) again to verify the intermit-
tent malfunction has been eliminated.
.
ACX00870 AB
MB991219
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