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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)
"B" 69 ((2) Brown)
"B" 79 & 80 ((2) White/Black)
(1) See Figure.
(2) Attached to right cylinder head.
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