An article regarding the technical differences between various types of auto electronic modules.
Tag: Repair Manual
REMOVAL 1-To avoid voltage spike damage to either the PCM or ECM, turn ignition to off, and disconnect negative battery cables before unplugging ECM connectors. 2-Be sure to disconnect both negative cables at both batteries. 3-Remove ECM’s 50–way electrical connector bolt. (A female 4mm hex head. To remove, use a ball-hex bit or ball-hex screwdriver....
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