Pajero II Workshop Manual 1991 · SERVICE BRAKES · страница 63 из 140 · Открыть оригинал PDF ↗

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ABS TROUBLESHOOTING <Vehicles built from June, 1994>

INSPECTION SERVICE POINTSFORABLOWN FUSE

Remove the fuse and measure the resistance between the load
side of the fuse and the earth.Set the switches of all circuits
which are connected to this fuse to a condition of continuity: If
the resistance is almost 0 Q at this time_there is a short circuit
somewhere between these switches and the load. If the resis-
tance is not 0 @, there is no short circuit at the present time, but

momentary short circuit has probably caused thefuse to blow:

The main causes of a short circuit are the following:

Harness being clamped by the vehicle body

Damage to the outer; casing of the harness due to wear Or
heat

Water getting into the connector or circuitry
Human error (mistakenly shorting a circuit, etc

POINTS TO NOTE FOR INTERMITTENT MALFUNC- TIONS:

Intermittent malfunctions often occur under certain conditions_
andif these conditions canbe ascertained, determining the
cause becomes simple. In order to ascertain the conditions un-
der which an intermittent malfunction occurs, first ask the cus-
tomer for details about the driving conditions, weather condi-
tions, frequency of occurrence and trouble symptoms, and then
try to recreate the trouble symptoms. Next, ascertain whether
the reason why the trouble symptom occurred under these
conditions is due to vibration, temperature or some other fac-
tors. If vibration is thought to be the cause, carry out the follow-
ing checks with the connectors and components to confirm
whether the trouble symptom occurs

The objects to be checked are connectors and components
which are indicated by inspection procedures or given as prob-
able causes (which generate diagnosis codes or trouble symp
toms).

Gently shake the connector Up, down and t0 the left ad
right.

Gently shake the wiring harness up, down and to the left and
right:

Gently rock each sensor and relay; etc. by hand_
Gently shake the wiring harness at suspensions and other
moving parts_

NOTE

If determining the cause is difficult, the flight recorder function
of the MUT-II can also be used.

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