toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 3100 > < Component Tests and General Diagnostics|Page 3098
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*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
*2: w/ Smart Key System

(a) WAVEFORM 1

(1) Camshaft timing oil control valve operation signal

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

(b) WAVEFORM 2

(1) Heated oxygen sensor signal

HINT: In the DATA LIST, item O2S B1S2 shows the ECM input values from the heated oxygen sensor.

(c) WAVEFORM 3

(1) Fuel injector operation signal

Component Tests and General Diagnostics|Page 3100 > < Component Tests and General Diagnostics|Page 3098