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Component Tests and General Diagnostics|Page 3977 > < Component Tests and General Diagnostics|Page 3975
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(d) WAVEFORM 4

(1) Knock sensor signal

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The wavelength becomes shorter as the engine rpm increases.

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The waveforms and amplitudes displayed differ slightly depending on the vehicle.

(e) WAVEFORM 5

(1) Variable Valve Timing (VVT) sensor signal (1)
(2) Crankshaft position sensor signal (2)

HINT: The wavelength becomes shorter as the engine rpm increases.

(f) WAVEFORM 6

(1) Igniter IGT signal (from ECM to igniter) (1)
(2) Igniter IGF signal (from igniter to ECM) (2)

HINT: The wavelength becomes shorter as the engine rpm increases.

Component Tests and General Diagnostics|Page 3977 > < Component Tests and General Diagnostics|Page 3975