Toyota 2GR-FE Manual page 203

2 V/DIV
Ground
20 ms./DIV
5 V/DIV
Ground
1 ms./DIV
5 V/DIV
Ground
1 ms./DIV
5 V/DIV
Ground
10 ms./DIV
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(h) WAVEFORM 8
ECM Terminal Names
Tester Ranges
Conditions
A093224E20
(i)
ECM Terminal Names
Tester Ranges
Conditions
A093274E21
(j)
ECM Terminal Names
Tester Ranges
Conditions
A093275E21
(k) WAVEFORM 11
ECM Terminal Names
Tester Ranges
Conditions
A093225E18
(1) Vehicle speed signal
Between SPD and E1
2 V/DIV, 20 ms./DIV
Driving at 12 mph (20 km/h)
HINT:
• The wavelength becomes shorter as the
vehicle speed increases.
• Depending on the vehicle, the output
waveform voltage may rise to 12 V if
influenced by optionally installed systems.
WAVEFORM 9
(1) Throttle drive motor operation signal (positive
terminal)
Between M+ and ME01
5 V/DIV, 1 ms./DIV
Idling with warm engine
HINT:
The duty ratio varies depending on the throttle
actuator operation.
WAVEFORM 10
(1) Throttle drive motor operation signal (negative
terminal)
Between M- and ME01
5 V/DIV, 1 ms./DIV
Idling with warm engine
HINT:
The duty ratio varies depending on the throttle
actuator operation.
(1) Engine speed signal
Between TACH and E1
5 V/DIV, 10 ms./DIV
Idling
HINT:
The wavelength becomes shorter as the engine
rpm increases.
ES–47
ES