Mitsubishi Montero (2002-2004). Manual - part 185

 

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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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