ECM Ground Circuits

For ECM location, see COMPONENT LOCATIONS under INTRODUCTION. Measure resistance between engine (ground) and specified terminals of ECM connector. See ECM GROUND CIRCUITS table. If resistance is more than one ohm, repair ground circuit. If resistance is one ohm or less, ground circuit is okay (ECM may be faulty).

ECM GROUND CIRCUITS

ECM Connector ⁽¹⁾

⁽¹⁾ ECM Terminals No. (Wire Color)

E12

15 (⁽²⁾ White/Black)

E14

33 & 34 (⁽³⁾ White/Black)

⁽¹⁾	See Fig 1.

⁽²⁾	Attached to right cylinder head.

⁽³⁾	Attached to left cylinder head.

Fig 1: Identifying ECM Terminals