Pajero II Workshop Manual 1991 · FUEL · страница 34 из 339 · Открыть оригинал PDF ↗

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Standard wave pattern

Observation conditions

Observation conditions (from conditions on previous page, engine speed is increased by racing )

7fuo880

Wave pattern observation points

Check that cycle timeT becomes shorter ad the frequency
increases when the engine speed is increased.

Examples of abnormal wave patterns

Example

Cause of problem

Sensor interface malfunction

Wave pattern characteristics
Rectangularwave pattern is output evenwhentheen-
gineis not started_

Example 2

Cause of problem

Damaged rectifier or vortex generation column

Wave pattern characteristics

Unstable wave pattern with non-uniform frequency. How-
ever,whenan ignitionleakoccurs duringacceleration,
thewavepatternwillbedistorted temporarily,evenif
the airflowsensor is normal:.

PWJE9086

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