Terminals Of ECM

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

ECM:

Fig 1: Identifying ECM Terminals

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Fig 2: ECM Terminals Reference Table

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Oscilloscope wave form 1

Fig 3: Identifying Oscilloscope Wave Form 1

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HINT:

Terminal: SP2- <=> SP2+
Gauge set: 2 V/DIV, 20 ms/DIV
Condition: Vehicle speed is approximately 20 km/h (12.43 mph).

Driver Side J/B ECU:

Fig 4: Identifying Driver Side J/B ECU Terminals

Fig 5: Driver Side J/B ECU Terminals Reference Table

If the value is not within the standard range, some defects on the vehicle is suspected.