ECM Terminal Identification

The following conditions must be met before testing:

Engine at normal operating temperature.
Engine idling at closed loop.
Scan tester not installed.
Test terminal not grounded.
Transaxle in Neutral or Park.

NOTE: All voltages showing B+ indicate battery or charging system voltage. Voltages showing 0 are ground circuits and should indicate less than .1 volt.

Fig 1: Pin Voltage Charts

Courtesy of ISUZU MOTOR CO.