Terminals Of ECM

Fig 1: Identifying ECM Terminals

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Fig 2: ECM Terminals Voltage Table

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Pulse generation 1

Reference:

ITEM AND CONDITION (PULSE GENERATION 1)

Item	Condition
Terminal	SLT+ - SLT-
Tool setting	5V/DIV, 1ms/DIV
Vehicle condition	Engine idle speed

Fig 3: Signal Waveform Graph (Pulse Generation 1)

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Pulse generation 2

Reference:

ITEM AND CONDITION (PULSE GENERATION 2)

Item	Condition
Terminal	SLU+ - SLU-
Tool setting	5V/DIV, 1ms/DIV
Vehicle condition	Engine idle speed

Fig 4: Signal Waveform Graph (Pulse Generation 2)

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Pulse generation 3

Reference:

ITEM AND CONDITION (PULSE GENERATION 3)

Item	Condition
Terminal	SL2+ - SL2-
Tool setting	5V/DIV, 1ms/DIV
Vehicle condition	Engine idle speed

Fig 5: Signal Waveform Graph (Pulse Generation 3)

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Pulse generation 4

Reference:

ITEM AND CONDITION (PULSE GENERATION 4)

Item	Condition
Terminal	SL1+ - SL1-
Tool setting	5V/DIV, 1ms/DIV
Vehicle condition	Engine idle speed

Fig 6: Signal Waveform Graph (Pulse Generation 4)

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Pulse generation 5

Reference:

ITEM AND CONDITION (PULSE GENERATION 5)

Item	Condition
Terminal	NT+ - NT-
Tool setting	1V/DIV, 2ms/DIV
Vehicle condition	Engine idle speed

Fig 7: Signal Waveform Graph (Pulse Generation 5)

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Pulse generation 6

Reference:

ITEM AND CONDITION (PULSE GENERATION 6)

Item	Condition
Terminal	SP2+ - SP2-
Tool setting	2V/DIV, 20ms/DIV
Vehicle condition	Vehicle speed 20 km/h (12 mph)

Fig 8: Signal Waveform Graph (Pulse Generation 6)

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