Mitsubishi Outlander XL. Manual - part 50

10. INSPECTION PROCEDURES USING

AN OSCILLOSCOPE

When there are inspection procedures using an

oscilloscope, these are listed.

HOW TO USE THE INSPECTION PROCEDURES

M10001000135USA0000010001

The  causes  of  many  of  the  problems  occurring  in
electric  circuitry  are  generally  the  connectors,
components,  the  ECU,  and  the  harnesses  between

connectors, in that order. These inspection
procedures follow this order. They first try to discover
a problem with a connector or a defective component.

GENERAL <BODY AND CHASSIS>

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HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS

(1) Relevant circuit(s) of the component which
the DTC indicates are described.

(3) Shows the location of the connector(s) from
the circuit(s) above.

(4) Explains about the operation principle of the
component or its relevant parts in that circuit.

B-48(B)

(2) For connector color, refer to GROUP 80A,
How to read configuration diagrams.

Connector : B-4 8

Inta ke air
tempe rature
sensor

ZC6012890000

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GENERAL <BODY AND CHASSIS>

HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS

(5) Explains about technical details.

(6) Describes the conditions for that DTC
being set (stored).

(8) Start of the diagnosis procedure
for that DTC.

(10) Provides the inspection procedure
for that DTC step by step.

(7) Describes possible
cause(s)for that DTC.

(M. U.T.-III Sub Assem bly)

(9) Identifies the special tool(s)
necessary for diagnosing that DTC.

Data link
connector

ZC6012900000

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
inspection  while  referring  to  GROUP  00E,  Harness
Connector  Inspection  P.00E-2.  Here,  "Check
harness between power supply and terminal xx" also
includes  checking  for  blown  fuse.  For  inspection

service points when there is a blown fuse, refer to
"Inspection Service Points for a Blown Fuse P.
00-18."

MEASURES TO TAKE AFTER REPLACING

THE ECU

If the trouble symptoms have not disappeared even
after replacing the ECU, repeat the inspection
procedure from the beginning.

GENERAL <BODY AND CHASSIS>

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HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS

CONNECTOR MEASUREMENT SERVICE POINTS

M10001000136USA0000010001

Turn the ignition switch to the "LOCK" (OFF) position when
connecting and disconnecting the connectors. Turn the ignition
switch to "ON" when measuring, unless there are instructions to
the contrary.

IF INSPECTING WITH THE CONNECTOR

CONNECTED WATERPROOF CONNECTORS

ZC501892

Special tool

0000

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

ZC501893

MB992006

0000

Required Special Tool:

｠

MB992006: Extra Fine Probe

Inspect by inserting a test probe from the harness side. If the
connector is too small to insert a test probe (e.g. control unit
connector), do not insert it forcibly. Use special tool MB992006
(extra fine probe).

IF INSPECTING WITH THE CONNECTOR

DISCONNECTED

ZC501907

MB991219

0000

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.

｠

From back side of the connector (SRS-ECU harness side
connector)

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GENERAL <BODY AND CHASSIS>

HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS

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