Vdiv r

Trrtsec./DIVT1""'"""

Fig. 21: Throttle Actuator Positive Terminal Waveform Graph 8. WAVEFORM 8

Throttle actuator negative terminal

WAVEFORM REFERENCE CHART

ECM Terminal Name

Between M- and E1

Tester Range

5 V/DIV, 1 msec./DIV.

Condition

Idle after engine warmed-up

HINT:

HINT:

The duty ratio varies depending on the throttle opening operation. 5 V/DIV. 1 1 1 1 1 1 ' 1

Ground

1 msoeAW,

Fig. 22: Throttle Actuator Negative Terminal Waveform Graph 9. WAVEFORM 9

1 msoeAW,

Fig. 22: Throttle Actuator Negative Terminal Waveform Graph 9. WAVEFORM 9

2007 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Sequoia

Igniter IGT signal (from ECM to igniter) and Igniter IGF signal (from igniter to ECM) WAVEFORM REFERENCE CHART

ECM Terminal Name

a. Between IGT1 (to IGT8) and E1 b. Between IGF1 (IGF2) and E1

Tester Range

2 V/DIV., 20 msec./DIV.

Condition

HINT:

The wavelength becomes shorter as engine rpm increases.

Fig. 23: Igniter IGT And IGF Signal Waveform Graph
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