mitsubishi Workshop Repair Guides

Mitsubishi Workshop Service and Repair Manuals

Throttle Position Sensor > < Component Tests and General Diagnostics|Page 548
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Part 2

Standard Wave Pattern

Wave Pattern Observation Points

1. Check that cycle time T becomes shorter and the frequency increases when the engine speed is increased.

Examples of Abnormal Wave Patterns

Example 1

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Cause of problem
Sensor interface malfunction.

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Wave pattern characteristics
Rectangular wave pattern is output even when the engine is not started.

Example 2

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Cause of problem
Damaged rectifier or vortex generation column.

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Wave pattern characteristics
Unstable wave pattern with non-uniform frequency. An ignition leak will distort the wave pattern temporarily, even if the volume air flow sensor is
normal.

Throttle Position Sensor > < Component Tests and General Diagnostics|Page 548