FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Signal Specification, Engine Control Module (ECM)






Signal specification

General
All values given below are between the terminals stated in column 1 and breakout box terminal in the terminal) and terminal #B1 (#C1) unless otherwise indicated in column 6 (Miscellaneous).
Control module terminals:
- #A1-#A60 correspond to adapter connector A (breakout box #A1-#A60)
- #A61-#A96 correspond to adapter connector B (breakout box #B1-#B36)
- #B1-#B58 correspond to adapter connector C (breakout box #C1-#C58).

Note! It is important to connect the breakout box and check the ground terminals before taking readings.