Terminals Of ECM

HINT:

Each ECM terminal's standard voltage is shown in the Fig 2 .

In the table, first follow the information under "Condition". Look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specific Condition". Use Fig 1 above as a reference for the ECM terminals.

Waveform 1

Reference: 

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

Waveform 2

Reference: 

Terminal	SLU+ - SLU-
Tool setting	5V/DIV, 1ms/DIV
Vehicle condition	5th (lock-up) or 6th (lock-up) gear

Waveform 3

Reference: 

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

Waveform 4

Reference: 

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

Waveform 5

Reference: 

Terminal	NT+ - NT-
Tool setting	1V/DIV, 2ms/DIV
Vehicle condition	Engine idle speed (P or N position)

Waveform 6

Reference: 

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