Mitsubishi Outlander XL. Manual — part 75

CABLES AND WIRES CHECK

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ZC600195AA00

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1.

Check connections for looseness, rust, and stains.

2.

Check terminals and wires for corrosion.

3.

Check terminals and wires for open circuit or impending open
circuit.

4.

Check wire insulation and coating for damage, cracks, and
wear.

5.

Check conductive parts of terminals for contact with other
metallic parts (vehicle body and other parts).

6.

Check grounding parts to verify that there is complete
continuity between attaching bolt(s) and vehicle body.

7.

Check for incorrect wiring.

8.

Check that harnesses are secured to prevent contact with
sharp edges and corners or hot parts (exhaust manifold, pipe,
etc.).

9.

Check that harnesses are secured firmly to provide enough
clearance from the fan pulley, fan belt, and other rotating or
moving parts.

10.

Check that the harnesses between fixed parts (such as the
vehicle body) and vibrating parts (such as the engine) are
long enough to allow for vibration and movement.

BATTERY HANDLING

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ZC600197AA00

Battery posts, terminals and related accessories contain
lead and lead compounds. WASH HANDS AFTER
HANDLING.
When checking or servicing does not require power from the
vehicle battery, be sure to disconnect the cable from the battery
(-) terminal. This will prevent problems that could be caused by
a short circuit. Disconnect the (-) battery terminal first and
reconnect it last.

GENERAL ELECTRICAL SYSTEM CHECK

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A circuit consists of the power supply, switch, relay,
load, ground, etc. There are various methods to check
a circuit including an overall check, voltage check,

short-circuit check, and continuity check. Each of the
methods briefly described below applies only to
circuits similar to the illustration.

GENERAL <ELECTRICAL>

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HOW TO DIAGNOSE

VOLTAGE CHECK

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Power supply

Fuse

Switch

Motor

(3)

ON (2)

OFF

(1)

Test light
(or voltmeter)

1.

Ground one lead wire of the test light. If a voltmeter is used
instead of the test light, ground the grounding side lead wire.

2.

Connect the other lead wire of the test light to the power side
terminal of the switch connector. The test light should come
on or the voltmeter should indicate a voltage.

3.

Then, connect the test light or voltmeter to the motor
connector. The test light should not come on, or the voltmeter
should indicate no voltage. When the switch is turned ON in
this state, the test light should come on, or the voltmeter
should indicate a voltage, with the motor starting to run.

4.

The circuit illustrated here is normal. If there is any problem,
such as the motor failing to run, check voltages beginning at
the connector nearest to the motor until the faulty part is
identified.

SHORT-CIRCUIT CHECK

Because the fuse has blown, it is probable that there is a short
circuit. Follow the procedures below to narrow down the short-
circuit location.

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GENERAL <ELECTRICAL>

HOW TO DIAGNOSE

STEP 1. Remove the blown fuse and connect the test light
across the fuse terminals (Circuit switch: OFF).

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Power supply

Switch

OFF

Illumination light

Test light

Fuse block
(remove the fuse)

Short-circuit
location

Q:Does the test light illuminate?

YES:

Short-circuit exists between the fuse block and the

switch. Repair the harness between the fuse block and the
switch.

NO:

Go to Step 2.

STEP 2. Turn the switch ON and disconnect the illumination
light connector.

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Power supply

Switch

ON

Illumination light

Test light

Fuse block
(remove
the fuse)

Disconnect
the load

Short-circuit
location

Q:Does the test light illuminate?

YES:

Short-circuit exists between the switch and the

connector. Repair the harness between the switch and the
connector.

NO:

Short-circuit exists between the connector and the

illumination light. Repair the harness between the
connector and the illumination light.

GENERAL <ELECTRICAL>

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HOW TO DIAGNOSE

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Power supply

Switch

ON

Illumination light

Test light

Fuse block
(remove the fuse)

Disconnect
the load

Short-circuit
location

CONTINUITY CHECK

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Self-powered test light
(or ohmmeter)

1 4

2 3

ON

OFF

ON

OFF

1.

When the switch is in the “OFF” position and the contact
points of terminals 1 and 2 are connected, the self-powered
test light should illuminate or the ohmmeter should read 0
ohm.

2.

When the switch is the “ON” position and the contact points
of terminals 3 and 4 are connected, the self-powered test light
should come on or the ohmmeter should read 0 ohm.

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GENERAL <ELECTRICAL>

HOW TO DIAGNOSE